Nitrur\u0103 de bor hexagonal\u0103 apare ca un material care schimb\u0103 regulile jocului \u0219i care r\u0103spunde provoc\u0103rilor critice din tehnologia modern\u0103 a semiconductorilor prin combina\u021bia sa unic\u0103 de propriet\u0103\u021bi termice, electrice \u0219i mecanice.<\/p>\n
\u2022 Management termic superior<\/strong>: h-BN atinge o conductivitate termic\u0103 excep\u021bional\u0103 \u00een plan de 585 W\/m-K, permi\u021b\u00e2nd disiparea eficient\u0103 a c\u0103ldurii \u00een circuite integrate 3D de mare putere \u0219i arhitecturi de dispozitive suprapuse.<\/p>\n \u2022 Performan\u021b\u0103 dielectric\u0103 ultra-joas\u0103<\/strong>: Filmele amorfe de BN ating constante dielectrice de p\u00e2n\u0103 la 1,78, apropiindu-se de propriet\u0103\u021bile aerului, men\u021bin\u00e2nd \u00een acela\u0219i timp rezisten\u021ba la rupere de 7,3 MV\/cm pentru aplica\u021bii avansate de interconectare.<\/p>\n \u2022 Performan\u021be \u00eembun\u0103t\u0103\u021bite ale materialelor 2D<\/strong>: substraturile h-BN cresc mobilitatea purt\u0103torilor de grafen de la 5.000-10.000 cm\u00b2\/V-s la 20.000-60.000 cm\u00b2\/V-s, revolu\u021bion\u00e2nd dispozitivele electronice de genera\u021bie urm\u0103toare.<\/p>\n \u2022 Metode de sintez\u0103 scalabile<\/strong>: Tehnicile CVD, ALD \u0219i MOCVD permit produc\u021bia la scara pl\u0103cilor cu controlul grosimii la nivel atomic, f\u0103c\u00e2nd integrarea comercial\u0103 fezabil\u0103 pentru fabricarea semiconductorilor.<\/p>\n \u2022 Fiabilitate dielectric\u0103 superioar\u0103<\/strong>: h-BN demonstreaz\u0103 c\u00e2mpuri de rupere de peste 15 MV\/cm \u0219i curen\u021bi de scurgere de 10-\u2078 p\u00e2n\u0103 la 10-\u00b9\u2070 A\/cm\u00b2, dep\u0103\u0219ind \u00een mod semnificativ materialele tradi\u021bionale precum nitrur\u0103 de siliciu \u0219i alumin\u0103.<\/p>\n Convergen\u021ba propriet\u0103\u021bilor excep\u021bionale \u0219i a tehnicilor de sintez\u0103 mature pozi\u021bioneaz\u0103 nitrur\u0103 de bor hexagonal\u0103 ca un material de baz\u0103 care va conduce urm\u0103torul val de inova\u021bii \u00een domeniul semiconductorilor, \u00een special \u00een domeniul managementului termic \u0219i al aplica\u021biilor dielectrice cu k foarte sc\u0103zut.<\/p>\n Nitrurile hexagonale de bor se remarc\u0103 ca un material esen\u021bial pentru progresul microelectronicii \u0219i al tehnologiei semiconductoarelor. Acest compus refractar de bor \u0219i azot, rezistent termic \u0219i chimic, are o structur\u0103 asem\u0103n\u0103toare cu grafitul. Cu toate acestea, ofer\u0103 o stabilitate termic\u0103 \u0219i chimic\u0103 superioar\u0103 pe care materialele tradi\u021bionale nu o pot egala. Ceramica nitrur\u0103 de bor exist\u0103 \u00een mai multe forme structurale, varianta hexagonal\u0103 (h-BN) fiind cea mai stabil\u0103 dintre polimorfurile sale. Ceea ce face ca h-BN s\u0103 fie valoros pentru electronica modern\u0103 este combina\u021bia sa unic\u0103 de propriet\u0103\u021bi: conductivitate termic\u0103 ridicat\u0103, izolare electric\u0103 puternic\u0103, rezisten\u021b\u0103 chimic\u0103 \u0219i la uzur\u0103 \u0219i performan\u021be excep\u021bionale la temperaturi ridicate. \u00cen aceast\u0103 lucrare vom explora propriet\u0103\u021bile fundamentale ale nitritei de bor hexagonale \u0219i vom aborda tehnicile de sintez\u0103 \u0219i depunere. Vom discuta, de asemenea, despre extinderea aplica\u021biilor sale \u00een microelectronic\u0103 \u0219i dispozitive semiconductoare.<\/p>\n Nitrur\u0103 de bor cristalizeaz\u0103 \u00eentr-o structur\u0103 hexagonal\u0103 stratificat\u0103 apar\u021bin\u00e2nd grupului spa\u021bial P6\u2083\/mmc. Fiecare strat con\u021bine atomi de bor \u0219i azot care se leag\u0103 covalent \u00een hibridizare sp\u00b2 \u0219i formeaz\u0103 o re\u021bea \u00een form\u0103 de fagure de miere \u00een care fiecare atom de bor se leag\u0103 de trei atomi de azot \u0219i viceversa. Parametrii re\u021belei m\u0103soar\u0103 a = 2,504 \u00c5 \u0219i c = 6,656 \u00c5, cu o distan\u021b\u0103 \u00eentre straturi de 0,333 nm. For\u021bele van der Waals slabe \u021bin aceste straturi \u00eempreun\u0103 \u0219i creeaz\u0103 comportamentul anizotrop caracteristic care define\u0219te multe dintre propriet\u0103\u021bile h-BN. Diferen\u021ba de electronegativitate dintre bor (2,04) \u0219i azot (3,04) produce leg\u0103turi covalente polare care creeaz\u0103 un caracter par\u021bial ionic. Acest lucru consolideaz\u0103 structura \u00een plan.<\/p>\n Nitrur\u0103 cubic\u0103 de bor adopt\u0103 o structur\u0103 de sferit\u0103 cu atomi de bor \u0219i azot lega\u021bi tetraedral \u00een hibridizare sp\u00b3. Sintetizat pentru prima dat\u0103 \u00een 1957 \u00een condi\u021bii de \u00eenalt\u0103 presiune \u0219i temperatur\u0103 ridicat\u0103, c-BN prezint\u0103 o duritate de 4 500 kp\/mm\u00b2 \u00een compara\u021bie cu 8 000 kp\/mm\u00b2 pentru diamant. Materialul are un bandgap indirect care variaz\u0103 de la 5,4 la 7,0 eV, cu o constant\u0103 de re\u021bea de 3,615 \u00c5. c-BN \u00ee\u0219i men\u021bine stabilitatea termic\u0103 p\u00e2n\u0103 la 1 000\u00b0C, c\u00e2nd \u00eencepe oxidarea. Aceasta dep\u0103\u0219e\u0219te pragul de stabilitate al diamantului de 800\u00b0C.<\/p>\n BN amorf ofer\u0103 avantaje de prelucrare prin sinteza la temperatur\u0103 sc\u0103zut\u0103. Filmele sub\u021biri de 3 nm demonstreaz\u0103 o constant\u0103 dielectric\u0103 sc\u0103zut\u0103 de 1,78 la 100 kHz. R\u0103spunsul dielectric variaz\u0103 \u00een func\u021bie de temperatura de depunere. Depunerea straturilor atomice la 65\u00b0C, 150\u00b0C \u0219i 250\u00b0C genereaz\u0103 valori \u03ba de 8,6, 4,6 \u0219i, respectiv, 4,3.<\/p>\n BN hexagonal prezint\u0103 un transport termic anizotropic destul de pronun\u021bat. Cristalele monoizotopice \u00b9\u2070B h-BN ating o conductivitate termic\u0103 \u00een plan de 585 W m-\u00b9 K-\u00b9 la temperatura camerei, cu aproximativ 80% mai mare dec\u00e2t h-BN natural. Monocapa de BN atinge 751 W\/mK \u0219i se situeaz\u0103 pe locul al doilea \u00een ceea ce prive\u0219te conductivitatea termic\u0103 pe unitate de greutate \u00eentre semiconductori \u0219i izolatori. Conductivitatea \u00een afara planului r\u0103m\u00e2ne mult mai sc\u0103zut\u0103 la 3,5 \u00b1 0,8 W m-\u00b9 K-\u00b9 pentru probele \u00b9\u2070B monoizotopice. M\u0103sur\u0103torile \u00een plan transversal ale fulgilor exfolia\u021bi arat\u0103 o dependen\u021b\u0103 puternic\u0103 de grosime. Valorile scad de la 8,1 \u00b1 0,5 W m-\u00b9 K-\u00b9 la 585 nm grosime la 0,20 \u00b1 0,06 W m-\u00b9 K-\u00b9 pentru fulgii de 7 nm.<\/p>\n H-BN monocelular posed\u0103 un bandgap direct de 6,42 eV la temperatura camerei, care trece la un gap indirect de aproximativ 5,95 eV \u00een form\u0103 masiv\u0103. R\u0103spunsul dielectric prezint\u0103 dependen\u021b\u0103 direc\u021bional\u0103. Constanta dielectric\u0103 \u00een plan variaz\u0103 de la 6,82 la 6,93, \u00een timp ce valorile \u00een afara planului variaz\u0103 de la 3,29 la 3,76. Componenta \u00een plan r\u0103m\u00e2ne relativ constant\u0103 pentru straturi de grosimi diferite. Constanta \u00een afara planului cre\u0219te cu aproximativ 15% de la monocamer\u0103 la mas\u0103.<\/p>\n Produc\u021bia de nitrur\u0103 de bor hexagonal\u0103 de \u00eenalt\u0103 calitate necesit\u0103 doar un control precis al parametrilor de depunere \u0219i al chimiei precursorului. Au ap\u0103rut mai multe c\u0103i de sintez\u0103, fiecare cu avantaje distincte pentru aplica\u021bii specifice.<\/p>\n CVD r\u0103m\u00e2ne metoda predominant\u0103 pentru sinteza h-BN pe suprafe\u021be mari. Procesul utilizeaz\u0103 borazin\u0103 (B\u2083N\u2083H\u2086) sau amoniac boran (NH\u2083BH\u2083) ca precursori de surs\u0103 unic\u0103 pe substraturi metalice catalitice care includ Cu \u0219i Ni. CVD la presiune sc\u0103zut\u0103, la temperaturi de aproape 1 000 \u00b0C \u0219i presiuni sub 250 Torr, face posibil\u0103 cre\u0219terea controlat\u0103 a straturilor. Substraturile de Cu prezint\u0103 o grosime care cre\u0219te \u00een mod liniar cu timpul de cre\u0219tere atunci c\u00e2nd presiunea par\u021bial\u0103 a borazinei dep\u0103\u0219e\u0219te 17 mTorr. Cre\u0219terea LPCVD pe substraturi Si\u2083N\u2084\/Si produce filme continue de h-BN cu o rugozitate redus\u0103 de 3,4 ori \u00een compara\u021bie cu suprafe\u021bele de baz\u0103. Se ob\u021bine astfel o mobilitate a grafenului de 1 200 cm\u00b2\/Vs fa\u021b\u0103 de 400 cm\u00b2\/Vs pe Si\u2083N\u2084 gol.<\/p>\n ALD ofer\u0103 controlul grosimii la scar\u0103 atomic\u0103 prin expuneri secven\u021biale ale precursorilor. ALD \u00eembun\u0103t\u0103\u021bit cu plasm\u0103 depune h-BN la 250-350\u00b0C cu rate de cre\u0219tere de 1,1 \u00c5\/ciclu utiliz\u00e2nd trietilborat \u0219i plasm\u0103 N\u2082\/H\u2082. Fereastra de temperatur\u0103 ALD se \u00eentinde de la 80 la 175\u00b0C pentru precursorii BCl3 sau TDMAB cu reactan\u021bi NH\u2083. ALD \u00eembun\u0103t\u0103\u021bit cu electroni realizeaz\u0103 depunerea la temperatura camerei utiliz\u00e2nd expuneri la borazin\u0103 \u0219i electroni, cu rate maxime de cre\u0219tere de 3,2 \u00c5\/ciclu la energii electronice de 80-160 eV.<\/p>\n MOCVD face posibil\u0103 uniformitatea la scara pl\u0103cilor folosind precursori de trietilboran (TEB) \u0219i NH\u2083. MOCVD \u00een mod pulsat la 1 000 \u00b0C realizeaz\u0103 o cre\u0219tere conform\u0103 pe nanotrenuri pe baz\u0103 de Si cu pas de 45 nm \u0219i raport de aspect 7:1. Ratele de cre\u0219tere ajung la 70 nm\/min cu gestionarea adecvat\u0103 a fluxului TEB. Procesul necesit\u0103 doar temperaturi de peste 950\u00b0C pentru condi\u021bii de amoniac \u0219i presiune ridicate.<\/p>\n CVD cu plasm\u0103 cuplat\u0103 inductiv sintetizeaz\u0103 h-BN multistratificat pe cuar\u021b \u0219i Si la 400-500\u00b0C folosind borazin\u0103. Condi\u021biile optime includ o temperatur\u0103 a substratului de 500\u00b0C \u0219i o putere RF de 180 W cu gaze purt\u0103toare combinate H\u2082\/N\u2082. Se ob\u021bin astfel filme cu grosimea de peste 50 nm.<\/p>\n Substraturile metalice precum Cu \u0219i Ni necesit\u0103 doar procese de transfer post-cre\u0219tere care introduc contaminare \u0219i deterior\u0103ri mecanice. Substraturile necatalitice precum SiO\u2082 \u0219i safirul necesit\u0103 temperaturi de peste 900\u00b0C pentru a dep\u0103\u0219i barierele energetice. Cre\u0219terea epitaxial\u0103 pe Si\u2083N\u2084 elimin\u0103 etapele de transfer, men\u021bin\u00e2nd \u00een acela\u0219i timp compatibilitatea cu prelucrarea semiconductorilor.<\/p>\n Capacit\u0103\u021bile de sintez\u0103 descrise permit nitrurii de bor hexagonale s\u0103 r\u0103spund\u0103 provoc\u0103rilor critice din dispozitivele semiconductoare moderne.<\/p>\n Filmele amorfe de nitrur\u0103 de bor cu grosimea de 3 nm ob\u021bin constante dielectrice extrem de sc\u0103zute de 1,78 la 100 kHz \u0219i 1,16 la 1 MHz. Aceste valori se apropie de constanta dielectric\u0103 a aerului, men\u021bin\u00e2nd \u00een acela\u0219i timp rezisten\u021ba la rupere de 7,3 MV\/cm. Astfel, a-BN previne difuzia cuprului \u00een siliciu \u00een condi\u021bii dificile \u0219i prelunge\u0219te durata de via\u021b\u0103 a dispozitivelor cu trei ordine de m\u0103rime \u00een compara\u021bie cu structurile neprotejate. H-BN pulverizat cu textur\u0103 vertical\u0103 prezint\u0103 o conductivitate termic\u0103 prin plan de 57 W\/m*K la temperaturi de depunere sub 400\u00b0C. Acest lucru permite scalarea fiabil\u0103 la nou\u0103 niveluri de mare putere \u00een circuitele integrate 3D.<\/p>\n BN hexagonal ofer\u0103 suprafe\u021be netede care cresc mobilitatea purt\u0103torilor de grafen de la 5.000-10.000 cm\u00b2\/V-s pe SiO\u2082 la 20.000-60.000 cm\u00b2\/V-s. \u00cencapsularea complet\u0103 reduce \u00eempr\u0103\u0219tierea impurit\u0103\u021bilor cu p\u00e2n\u0103 la dou\u0103 ordine de m\u0103rime la temperaturi sc\u0103zute.<\/p>\n H-BN cu pu\u021bine straturi demonstreaz\u0103 c\u00e2mpuri de rupere de peste 10 MV\/cm cu curen\u021bi de scurgere de 10-\u2078 p\u00e2n\u0103 la 10-\u00b9\u2070 A\/cm\u00b2. Stivele de por\u021bi din platin\u0103\/hBN prezint\u0103 pierderi de 500 de ori mai mici dec\u00e2t configura\u021biile pe baz\u0103 de aur \u0219i ating o rezisten\u021b\u0103 dielectric\u0103 de cel pu\u021bin 25 MV\/cm.<\/p>\n Acoperirea nanostripurilor de aur cu hBN scade viteza de cre\u0219tere a temperaturii cu 40% \u0219i cre\u0219te densitatea curentului de rupere cu 30%. hBN pe nanofire de SiGe reduce temperatura de func\u021bionare cu 500 K sub excita\u021bie optic\u0103.<\/p>\n Metodele precise de caracterizare determin\u0103 dac\u0103 nitrur\u0103 de bor hexagonal\u0103 \u00eendepline\u0219te cerin\u021bele stricte pentru integrarea electronic\u0103.<\/p>\n Structurile condensatoarelor metal-insulator-metal permit extragerea direct\u0103 a constantelor dielectrice prin m\u0103sur\u0103tori capacitate-tensiune. Permittivitatea \u00een afara planului se reduce la 3,4\u00b10,2. Testele de stres cu tensiune amplificat\u0103 m\u0103soar\u0103 comportamentul de rupere. Nanofi\u0219ele sub\u021biri ating c\u00e2mpuri de rupere de 15,7 MV\/cm la stres mecanic zero, iar filmele de 3 nm ating 21 MV\/cm. Grosimea influen\u021beaz\u0103 \u00een mare m\u0103sur\u0103 rezisten\u021ba dielectric\u0103. Probele de 4,6 nm prezint\u0103 E63.2% de 15,1 MV\/cm, care scade la 10,4 MV\/cm pentru filmele de 41,3 nm.<\/p>\n Termoreflectan\u021ba \u00een domeniul timpului cu dimensiuni variabile ale spotului m\u0103soar\u0103 \u00een acela\u0219i timp conductivitatea \u00een plan \u0219i prin plan prin ajustarea dimensiunilor spotului laser \u00een raport cu ad\u00e2ncimea de penetrare termic\u0103. Spectroscopia Raman optotermal\u0103 urm\u0103re\u0219te deplas\u0103rile v\u00e2rfurilor \u00een func\u021bie de temperatur\u0103 pentru a extrage propriet\u0103\u021bile de transport termic.<\/p>\n H-BN CVD disponibil pe pia\u021b\u0103 prezint\u0103 un curent de scurgere \u0219i o omogenitate electric\u0103 mult mai slabe dec\u00e2t materialul ob\u021binut prin exfoliere mecanic\u0103. Densit\u0103\u021bile de capcane de interfa\u021b\u0103 \u00eentre h-BN \u0219i substraturile de Ge variaz\u0103 \u00eentre 10\u00b9\u00b9 \u0219i 10\u00b9\u00b2 cm-\u00b2 eV-\u00b9.<\/p>\n Constanta dielectric\u0103 a nitritei de bor dep\u0103\u0219e\u0219te intervalul 8,0-10 al nitritei de siliciu \u0219i reduce \u00eent\u00e2rzierea semnalului \u00een aplica\u021bii de \u00eenalt\u0103 frecven\u021b\u0103. Rezisten\u021ba la rupere variaz\u0103 \u00eentre 61-200 kV\/mm. Acest lucru este foarte important, deoarece \u00eenseamn\u0103 c\u0103 nivelul de 8,9-12 kV\/mm al aluminei r\u0103m\u00e2ne mult \u00een urm\u0103.<\/p>\n Nitrur\u0103 de bor hexagonal\u0103 s-a dovedit a fi un material vital pentru electronica de genera\u021bie urm\u0103toare prin conductivitatea termic\u0103 excep\u021bional\u0103, propriet\u0103\u021bile dielectrice superioare \u0219i stabilitatea chimic\u0103. Progresele \u00een tehnicile de sintez\u0103 au f\u0103cut posibil\u0103 produc\u021bia pe scar\u0103 larg\u0103 \u0219i au permis integrarea \u00een interconexiuni cu k foarte sc\u0103zut, dielectrici de poart\u0103 \u0219i sisteme de gestionare termic\u0103. Materialul surclaseaz\u0103 dielectricii tradi\u021bionali \u00een standarde critice. Acest lucru pozi\u021bioneaz\u0103 h-BN ca o tehnologie vital\u0103 care va optimiza inovarea \u00een domeniul semiconductorilor \u0219i va r\u0103spunde cerin\u021belor exigente ale dispozitivelor microelectronice moderne.<\/p>\n Q1. Ce face ca nitrurile hexagonale de bor s\u0103 fie valoroase pentru aplica\u021biile electronice?<\/strong> Nitrur\u0103 de bor hexagonal\u0103 combin\u0103 mai multe propriet\u0103\u021bi critice care o fac ideal\u0103 pentru electronica modern\u0103: conductivitate termic\u0103 ridicat\u0103 (p\u00e2n\u0103 la 585 W m-\u00b9 K-\u00b9 \u00een plan), izolare electric\u0103 excelent\u0103 cu un bandgap larg de aproximativ 6 eV, stabilitate chimic\u0103 \u0219i termic\u0103 excep\u021bional\u0103 la temperaturi ridicate \u0219i o constant\u0103 dielectric\u0103 sc\u0103zut\u0103. Aceste caracteristici permit h-BN s\u0103 abordeze provoc\u0103rile cheie din dispozitivele semiconductoare, inclusiv disiparea c\u0103ldurii, reducerea \u00eent\u00e2rzierii semnalului \u0219i fiabilitatea dispozitivului.<\/p>\n Q2. Cum se compar\u0103 nitrur\u0103 de bor hexagonal\u0103 cu nitrur\u0103 de bor cubic\u0103?<\/strong> Nitrur\u0103 de bor hexagonal\u0103 (h-BN) prezint\u0103 o structur\u0103 stratificat\u0103 asem\u0103n\u0103toare grafitului cu leg\u0103turi sp\u00b2 \u0219i este cel mai stabil polimorf \u00een condi\u021bii ambientale. Nitrur\u0103 cubic\u0103 de bor (c-BN) are o structur\u0103 asem\u0103n\u0103toare diamantului cu leg\u0103turi sp\u00b3 \u0219i prezint\u0103 o duritate extrem\u0103 (4 500 kp\/mm\u00b2), a doua dup\u0103 diamant. \u00cen timp ce c-BN necesit\u0103 o sintez\u0103 la \u00eenalt\u0103 presiune \u0219i temperatur\u0103 ridicat\u0103, h-BN poate fi depus la temperaturi mai sc\u0103zute. Fiecare form\u0103 serve\u0219te unor aplica\u021bii diferite: h-BN exceleaz\u0103 \u00een electronic\u0103 \u0219i managementul termic, \u00een timp ce c-BN este preferat pentru unelte de t\u0103iere \u0219i abrazive.<\/p>\n Q3. Care sunt principalele metode de sintetizare a filmelor de nitrur\u0103 de bor hexagonal\u0103?<\/strong> Principalele metode de sintez\u0103 includ depunerea chimic\u0103 \u00een stare de vapori (CVD) la temperaturi apropiate de 1 000 \u00b0C, folosind precursori precum borazina sau amoniacul boran, depunerea \u00een strat atomic (ALD), care ofer\u0103 un control al grosimii la scar\u0103 atomic\u0103 la 250-350 \u00b0C, CVD metal-organic (MOCVD) pentru uniformitatea la nivel de plachet\u0103, folosind trietilboran \u0219i amoniac, \u0219i tehnici \u00eembun\u0103t\u0103\u021bite cu plasm\u0103 la temperatur\u0103 sc\u0103zut\u0103, care permit depunerea la 400-500 \u00b0C. Fiecare metod\u0103 ofer\u0103 avantaje distincte pentru aplica\u021bii specifice \u0219i compatibilitatea substratului.<\/p>\n Q4. De ce este utilizat\u0103 nitrur\u0103 de bor hexagonal\u0103 ca substrat pentru dispozitivele cu grafen?<\/strong> Ceramica din nitrur\u0103 de bor hexagonal\u0103 ofer\u0103 o suprafa\u021b\u0103 neted\u0103 din punct de vedere atomic, inert\u0103 din punct de vedere chimic, care \u00eembun\u0103t\u0103\u021be\u0219te dramatic performan\u021ba grafenului. Atunci c\u00e2nd grafenul este plasat pe substraturi h-BN \u00een locul dioxidului de siliciu tradi\u021bional, mobilitatea purt\u0103torilor cre\u0219te de la 5 000-10 000 cm\u00b2\/V-s la 20 000-60 000 cm\u00b2\/V-s. \u00cencapsularea complet\u0103 a grafenului \u00eentre straturile de h-BN reduce \u00een continuare \u00eempr\u0103\u0219tierea impurit\u0103\u021bilor cu p\u00e2n\u0103 la dou\u0103 ordine de m\u0103rime, rezult\u00e2nd propriet\u0103\u021bi electronice mai curate \u0219i performan\u021be \u00eembun\u0103t\u0103\u021bite ale dispozitivelor.<\/p>\n Q5. Ce constant\u0103 dielectric\u0103 \u0219i tensiune de rupere atinge nitrurile de bor hexagonale?<\/strong> Nitrur\u0103 de bor hexagonal\u0103 prezint\u0103 o constant\u0103 dielectric\u0103 cuprins\u0103 \u00eentre 4,0 \u0219i 4,4, care este mai mic\u0103 dec\u00e2t nitrur\u0103 de siliciu (8,0-10), ceea ce o face avantajoas\u0103 pentru reducerea \u00eent\u00e2rzierii semnalului \u00een aplica\u021bii de \u00eenalt\u0103 frecven\u021b\u0103. Tensiunea de rupere este impresionant\u0103, filmele sub\u021biri ating\u00e2nd c\u00e2mpuri de rupere de 15-21 MV\/cm \u00een func\u021bie de grosime. Peliculele amorfe de BN pot atinge constante dielectrice extrem de sc\u0103zute, de p\u00e2n\u0103 la 1,78, men\u021bin\u00e2nd \u00een acela\u0219i timp o for\u021b\u0103 de rupere de 7,3 MV\/cm, apropiindu-se de propriet\u0103\u021bile aerului \u0219i oferind \u00een acela\u0219i timp o izola\u021bie electric\u0103 robust\u0103.<\/p>","protected":false},"excerpt":{"rendered":" Hexagonal Boron Nitride: Properties and Applications in Modern Electronics Key Takeaways Hexagonal boron nitride emerges as a game-changing material that […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ngg_post_thumbnail":0,"footnotes":""},"categories":[4],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/boronnitrideceramic.com\/ro\/wp-json\/wp\/v2\/posts\/320"}],"collection":[{"href":"https:\/\/boronnitrideceramic.com\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/boronnitrideceramic.com\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/boronnitrideceramic.com\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/boronnitrideceramic.com\/ro\/wp-json\/wp\/v2\/comments?post=320"}],"version-history":[{"count":1,"href":"https:\/\/boronnitrideceramic.com\/ro\/wp-json\/wp\/v2\/posts\/320\/revisions"}],"predecessor-version":[{"id":321,"href":"https:\/\/boronnitrideceramic.com\/ro\/wp-json\/wp\/v2\/posts\/320\/revisions\/321"}],"wp:attachment":[{"href":"https:\/\/boronnitrideceramic.com\/ro\/wp-json\/wp\/v2\/media?parent=320"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/boronnitrideceramic.com\/ro\/wp-json\/wp\/v2\/categories?post=320"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/boronnitrideceramic.com\/ro\/wp-json\/wp\/v2\/tags?post=320"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}Forme structurale \u0219i propriet\u0103\u021bi fundamentale<\/h2>\n
Structura cristalin\u0103 a BN hexagonal (h-BN)<\/h3>\n
Variante BN cubice (c-BN) \u0219i BN amorfe (a-BN)<\/h3>\n
Conductivitate termic\u0103 \u0219i caracteristici de disipare a c\u0103ldurii<\/h3>\n
Propriet\u0103\u021bi dielectrice \u0219i comportament Bandgap<\/h3>\n
Metode de sintez\u0103 \u0219i depunere<\/h2>\n
Tehnici de depunere chimic\u0103 \u00een stare de vapori (CVD)<\/h3>\n
Procesul de depunere a stratului atomic (ALD)<\/h3>\n
Abord\u0103ri CVD metal-organice (MOCVD)<\/h3>\n
Metode de cre\u0219tere la temperaturi sc\u0103zute<\/h3>\n
Selectarea substratului \u0219i provoc\u0103rile de integrare<\/h3>\n
Aplica\u021bii \u00een microelectronic\u0103 \u0219i dispozitive semiconductoare<\/h2>\n
Material dielectric ultra-low-k pentru interconexiuni<\/h3>\n
Substrat \u0219i strat de \u00eencapsulare pentru materiale 2D<\/h3>\n
Dielectrici de poart\u0103 \u00een tranzistoarele cu efect de c\u00e2mp<\/h3>\n
Managementul termic \u00een arhitecturile cu dispozitive stivuite<\/h3>\n
Caracterizarea materialelor \u0219i parametri de performan\u021b\u0103<\/h2>\n
M\u0103surarea constantei dielectrice \u0219i a tensiunii de rupere<\/h3>\n
Metode de testare a conductivit\u0103\u021bii termice<\/h3>\n
Calitatea suprafe\u021bei \u0219i propriet\u0103\u021bile interfe\u021bei<\/h3>\n
Compara\u021bie cu materialele dielectrice tradi\u021bionale<\/h3>\n
Concluzie<\/h2>\n
\u00centreb\u0103ri frecvente<\/h2>\n