Kutheni iDayimane Ine-Thermal Conductivity Engaqhelekanga Kangaka?

Izixhobo zeDiamond Heat Sink: Ikamva loLawulo lweThermal kwi-High-Power Electronics

Njengoko izixhobo ze-elektroniki ziqhubeka zisiba zincinci, zikhawuleza, kwaye zinamandla ngakumbi, ulawulo lobushushu lube ngomnye wemingeni emikhulu ejongene namashishini anamhlanje. Ukusuka kwii-semiconductors ezinamandla aphezulu kunye neenkqubo zonxibelelwano ze-5G ukuya kwizithuthi zombane, izixhobo ze-elektroniki zeenqwelo moya, kunye namaziko ekhompyutha e-AI, ukwanda koxinano lwamandla kuvelisa ubushushu obukhulu obunokuchaphazela kakhulu ukusebenza kwesixhobo kunye nokuthembeka kwaso.

Izixhobo zolawulo lobushushu zemveli ziyafikelela kancinci kancinci kwimida yazo. Ngenxa yoko, abaphandi kunye nabavelisi bafuna ngenkuthalo izixhobo zokusasaza ubushushu zesizukulwana esilandelayo ezine-thermal conductivity ephezulu, ukwanda kobushushu obuphantsi, kunye neempawu ezilula.

Phakathi kwazo zonke izinto ezaziwayo, idayimani ivelele njengenye yezisombululo zolawulo lobushushu ezithembisayo.

Kutheni Ukutshabalalisa Ubushushu Ngokusebenzayo Kubalulekile Kangaka?

Ukuqhubela phambili okuqhubekayo kwetekhnoloji ye-semiconductor kukhokelele ekuxinaneni okuphezulu kokuhlanganiswa kunye nokunyuka kobushushu ngaphakathi kwezixhobo ze-elektroniki. Ubushushu obugqithisileyo bunokubangela:

• Ukusebenza kakuhle kwesixhobo okunciphileyo
• Ubomi obufutshane becandelo
• Uxinzelelo lobushushu kunye nomonakalo wesakhiwo
• Amazinga okwanda kokusilela kwenkqubo

Ukujongana nale mingeni, amashishini adla ngokusebenzisa izisombululo ezifana nezi:

• Amaphepha egrafayithi
• Izixhobo zeGraphene
• Izixhobo zojongano lobushushu (ii-TIM)
• Iipayipi zobushushu
• Amagumbi omphunga
• Ii-composites ze-metal matrix eziphucukileyo

Nangona ezi teknoloji zibonelela ngeenzuzo ezithile, uninzi luyasokola ukuhlangabezana neemfuno ezikhulayo zezixhobo ze-elektroniki ezinamandla aphezulu zesizukulwana esilandelayo, ingakumbi apho kufuneka khona uyilo oluncinci kakhulu, izakhiwo ezikhaphukhaphu, kunye nokukwazi ukususa ubushushu obugqithisileyo.

Oku kuye kwabangela umdla omkhulu kwizinto ezisebenzisa ubushushu ezisekelwe kwikhabhoni, ingakumbi idayimani.

Idayimani: Enye yezona zinto zihambisa ubushushu kakhulu emhlabeni

Idayimani yaziwa ngokubanzi njengeyona nto yendalo inzima kakhulu eyaziwayo, kodwa ukuhanjiswa kwayo kobushushu kuyamangalisa ngokufanayo.

Enyanisweni, idayimani ekumgangatho ophezulu inokubonisa amaxabiso okuqhuba ubushushu aphindwe kahlanu ngaphezu kobhedu, nto leyo eyenza ukuba ibe yenye yezona zinto zisebenzayo zokuqhuba ubushushu ezikhoyo.

Ngokungafaniyo neentsimbi, ezidlulisela ubushushu ngokuyintloko ngee-elektroni ezikhululekileyo, idayimani idlulisela ubushushu ngee-lattice vibrations ezaziwa ngokuba zii-phonons.

Ngenxa yesakhiwo sayo esikhethekileyo sekristale, idayimani inika:

• Ukuqhuba okuphezulu kakhulu kobushushu
• I-coefficient yokwandisa ubushushu ephantsi kakhulu
• Ubushushu bombane obuhle kakhulu
• Amandla aphezulu e-dielectric
• Uzinzo olubalaseleyo lweekhemikhali
• Amandla oomatshini angaqhelekanga

Ezi mpawu zenza idayimani ibe yinto efanelekileyo kwii-heat spreaders eziphambili, ii-semiconductor substrates, iinkqubo ze-laser, kunye nezicelo zokupakisha ze-elektroniki ezinamandla aphezulu.

Ukuqhuba Ubushushu Kweentlobo Zedayimani Ezahlukeneyo

Ayizizo zonke iidayimani ezine-thermal performance efanayo. Ukuqhuba kwe-thermal kuchaphazeleka kakhulu bubunyulu bekristale, uxinano lwe-defect, uxinano lokungcola, kunye nesakhiwo sekristale.

Idayimani ngokubanzi ihlulwe ibe ziindidi ezininzi, kuquka:

• Uhlobo lwe-Ia
• Uhlobo lwe-Ib
• Uhlobo IIa
• Uhlobo IIb

Phakathi kwazo, idayimani yohlobo lwe-IIa ithathwa njengolona hlobo lucocekileyo, equlethe amanqanaba aphantsi kakhulu okungcola kwe-nitrogen kunye ne-boron. Ngenxa yoko, ibonisa ubushushu obuphezulu.

Amaxabiso aqhelekileyo okuqhuba ubushushu aquka:

Uhlobo lweDayimane	Ukuqhuba Ubushushu kwiqondo lobushushu legumbi (W/m·K)
Uhlobo lwe-Ia	600–1000
Uhlobo IIa	2000–2200
Idayimani yeCVD ecocekileyo kakhulu	Ukuya kuthi ga kwi-2200+

Kwizicelo zolawulo lobushushu, idayimani yeType IIa single-crystal kunye nedayimani yeCVD polycrystalline ekumgangatho ophezulu zezona zinto zisetyenziswa kakhulu.

Idayimani Iqhuba Njani Ubushushu?

Imfihlo ikwisakhiwo seathom sedayimani.

Idayimani ine-lattice yekristale yetyhubhu apho i-athomu nganye yekhabhoni idityaniswe nee-athomu ezine zekhabhoni ezikufutshane ngokusebenzisa iibhondi eziqinileyo ze-sp³ covalent, ezenza isakhiwo se-tetrahedral esizinzileyo kakhulu.

Ngenxa yokuba zonke ii-electron ze-valence zibotshelelwe ngokuqinileyo kwezi bhondi ze-covalent, idayimani ayinazo ii-electron zasimahla kwaye ngenxa yoko isebenza njengesigqubuthelo sombane.

Nangona kunjalo, ukuthuthwa kobushushu kwidayimani kusebenza kakuhle kakhulu.

Ukudluliselwa kobushushu ngeePhonon

Kwidayimani, amandla obushushu athwalwa ikakhulu zii-phonon—ukungcangcazela okulinganiselweyo kwee-athomu ngaphakathi kwi-crystal lattice.

Ukusebenza kakuhle kokudluliselwa kobushushu kuxhomekeke kwindlela ekhululekileyo ye-phonon, emele umgama onokuhanjwa zii-phonon ngaphambi kokuba zisasazeke.

Izinto ezinciphisa ukuhanjiswa kobushushu ziquka:

• Ukungcola kwe-nitrogen
• Iintsalela ze-catalyst zesinyithi
• Iziphene zekristale
• Ukufuduka
• Imida yeenkozo
• Ii-Microcracks
• Ukuguqulwa kwelatisi

Xa ii-phonon zingqubana nezi mpazamo, intshukumo yazo iyaphazamiseka, nto leyo enciphisa ukusebenza kakuhle kokudlulisa ubushushu.

Ngoko ke, okukhona ikristale yedayimani icocekile kwaye igqibelele ngokwesakhiwo, kokukhona ukuhanjiswa kwayo kobushushu kuphezulu. Oku kuchaza isizathu sokuba idayimani yohlobo lwe-IIa kunye nedayimani ye-CVD ekumgangatho ophezulu zibonisa ukusebenza okuphezulu kobushushu xa kuthelekiswa nezinye iidayimani.

Iingenelo zeDiamond Heat Spreaders

Xa kuthelekiswa nezixhobo zokulawula ubushushu bendabuko, izisasazi zobushushu zedayimani zibonelela ngeenzuzo ezininzi ezibalulekileyo:

Ukuqhuba Ubushushu Okuphezulu Kakhulu

Ukususa ubushushu ngokukhawuleza kunceda ukugcina amaqondo obushushu asebenzayo ezinzile nokuba amandla anzima kakhulu.

Ukwanda Okuphantsi Kobushushu

I-coefficient yedayimani yokwandisa ubushushu imalunga ne-0.8 × 10⁻⁶/K, ihambelana ngokusondeleyo nezixhobo ezininzi ze-semiconductor kwaye inciphisa uxinzelelo lobushushu.

Ukufakwa kombane

Ngokungafaniyo nobhedu okanye i-aluminium, idayimani inika ukuhanjiswa kobushushu okugqwesileyo ngaphandle kokuphazamisa ukwahlulwa kombane.

Uyilo oluKhaphukhaphu

Idayimani ivumela izisombululo zolawulo lobushushu ezithambileyo nezikhaphukhaphu kwizixhobo ze-elektroniki ezincinci.

Ukuthembeka Kwexesha Elide

Ukungangeni kweekhemikhali zedayimani kunye neempawu zayo ezibalaseleyo zoomatshini zinegalelo ekuqineni okuphezulu phantsi kweemeko zokusebenza ezinzima.

Usetyenziso lweDayimani yoQhushulo oluPhezulu lobushushu

Njengoko ubuchwepheshe bokuvelisa buqhubeka buhambela phambili, izixhobo zokusasaza ubushushu bedayimani zisetyenziswa ngakumbi kwezi zinto zilandelayo:

Izixhobo zeSemiconductor

• Izixhobo zombane zeGaN
• Iimodyuli zamandla zeSiC
• Izixhobo zeRF ezisebenza rhoqo
• Ubuchwepheshe obuphambili bokupakisha

Iinkqubo zeLaser

• Iidiode zelaser ezinamandla aphezulu
• Iileyiza ze-Solid-state
• Izixhobo zelaser zoshishino

Izixhobo zombane ze-Aerospace

• Iinkqubo zonxibelelwano lwesathelayithi
• Iimodyuli zeradar
• Izixhobo ze-elektroniki ezishushu kakhulu

Ubukrelekrele bokwenziwa kunye namaziko edatha

• Izikhawulezisi ze-AI
• Iiprosesa ezisebenzayo kakhulu
• Amaqonga ekhompyutha aphucukileyo

Izixhobo ze-Optical kunye ne-Photonic

• Izixhobo ezibonakalayo ezichanekileyo
• Iinkqubo ze-LED ezinamandla aphezulu
• Iisekethe ezidityanisiweyo zePhotonic

Iingcali zoshishino zijonga kakhulu idayimani njengenye yezona zinto zithembisayo zolawulo lobushushu kwisizukulwana esilandelayo kwiiteknoloji ze-elektroniki eziphambili kunye ne-semiconductor.

Ikamva leTekhnoloji yoLawulo loBushushu beDayimani

Njengoko uxinano lwamandla luqhubeka lusanda kumashishini e-semiconductor, ezonxibelelwano, iimoto, kunye neenqwelo-moya, imfuno yezisombululo zobushushu eziphambili iya kwanda kuphela.

Ngenxa yokuphuculwa okuqhubekayo kwitekhnoloji yokwenziwa kwedayimani ye-HPHT kunye ne-CVD, izixhobo zedayimani ezisebenzisa ubushushu obuphezulu ziya zifikeleleka kwaye zingabizi kakhulu kunangaphambili.

Ukusuka ekupakishweni kwee-semiconductor ukuya kwiinkqubo zekhompyutha ze-AI kunye neenkqubo zeenqwelo moya, idayimani itshintsha ukusuka kwizinto ezikumgangatho ophezulu ukuya kwizinto ezibalulekileyo ezivumela izixhobo ze-elektroniki zesizukulwana esilandelayo.

Indibaniselwano yayo engenakuthelekiswa nanto yokuqhuba ubushushu, ubushushu bombane, ukwanda kobushushu obuphantsi, kunye nokuqina koomatshini kubeka idayimani njengenye yezona zinto zibalulekileyo zolawulo lobushushu kwixesha elizayo.