Kungani Idayimane Ine-Thermal Conductivity Engavamile Kangaka?
Izinto Zokusinki Wokushisa Kwedayimane: Ikusasa Lokuphathwa Kokushisa Kwama-Electronics Anamandla Aphezulu
Njengoba amadivayisi kagesi eqhubeka nokuba mancane, ashesha, futhi anamandla kakhulu, ukuphathwa kokushisa kube ngenye yezinselelo ezinkulu ezibhekene nezimboni zesimanje. Kusukela kuma-semiconductors anamandla amakhulu kanye nezinhlelo zokuxhumana ze-5G kuya ezimotweni zikagesi, ama-electronics asezindiza, kanye nezikhungo zokubala ze-AI, ukwanda kwamandla kukhiqiza ukushisa okukhulu okungathinta kakhulu ukusebenza kwedivayisi kanye nokuthembeka kwayo.
Izinto zokuphatha ukushisa zendabuko ziya ngokuya zifinyelela imikhawulo yazo. Ngenxa yalokho, abacwaningi nabakhiqizi bafuna ngenkuthalo izinto zokusabalalisa ukushisa zesizukulwane esilandelayo ezinokushisa okuphezulu, ukwanda okuphansi kokushisa, kanye nezici ezilula.
Phakathi kwazo zonke izinto ezaziwayo, idayimane livelele njengenye yezixazululo zokuphatha ukushisa ezithembisayo kakhulu.
Kungani Ukushabalalisa Ukushisa Okusebenzayo Kubaluleke Kangaka?
Ukuthuthuka okuqhubekayo kobuchwepheshe be-semiconductor kuholele ekuminyaneni okuphezulu kokuhlanganiswa kanye nokwanda kokushisa ngaphakathi kwamadivayisi kagesi. Ukushisa ngokweqile kungabangela:
- Ukusebenza kahle kwedivayisi okuncishisiwe
- Isikhathi sokuphila sengxenye emfushane
- Ukucindezeleka kokushisa kanye nomonakalo wesakhiwo
- Amazinga okwehluleka kwesistimu akhuphukile
Ukuze kuxazululwe lezi zinselele, izimboni zivame ukusebenzisa izixazululo ezifana nalezi:
- Amashidi e-graphite
- Izinto ze-Graphene
- Izinto zokusetshenziswa kwe-thermal interface (ama-TIM)
- Amapayipi okushisa
- Amakamelo anomusi
- Izinhlanganisela ze-metal matrix ezithuthukisiwe
Nakuba lobu buchwepheshe bunikeza izinzuzo ezithile, abaningi balwela ukuhlangabezana nezidingo ezikhulayo ze-elekthronikhi ezinamandla aphezulu esizukulwaneni esilandelayo, ikakhulukazi lapho kudingeka khona imiklamo emincane kakhulu, izakhiwo ezilula, kanye namakhono okususa ukushisa okukhulu.
Lokhu kuye kwavusa isithakazelo esikhulu ezintweni ezishisayo ezisekelwe kukhabhoni ezithuthukisiwe, ikakhulukazi idayimane.
Idayimane: Enye Yezinto Ezihambisa Ukushisa Kakhulu Emhlabeni
Idayimane yaziwa kabanzi njengezinto zemvelo eziqine kakhulu ezaziwayo, kodwa ukuhanjiswa kwayo kokushisa kuyamangalisa ngokulinganayo.
Eqinisweni, idayimane elisezingeni eliphezulu lingabonisa amanani okushisa aphakeme ngokuphindwe kahlanu kunethusi, okwenza libe ngenye yezinto eziphumelela kakhulu ezisebenzisa ukushisa ezitholakalayo.
Ngokungafani nezinsimbi, ezidlulisela ukushisa ngama-electron amahhala, idayimane lidlulisela ukushisa ngokudlidliza kwe-lattice okwaziwa ngokuthi ama-phononi.
Ngenxa yesakhiwo sayo esiyingqayizivele sekristalu, idayimane inikeza:
- Ukushisa okuphezulu kakhulu
- I-coefficient yokwandisa ukushisa ephansi kakhulu
- Ukushisa kukagesi okuhle kakhulu
- Amandla aphezulu e-dielectric
- Ukuqina kwamakhemikhali okuvelele
- Amandla angavamile omshini
Lezi zakhiwo zenza idayimane libe yinto efanelekile yokusabalalisa ukushisa okuthuthukisiwe, ama-substrate e-semiconductor, izinhlelo ze-laser, kanye nezinhlelo zokusebenza zokupakisha ze-elekthronikhi ezinamandla aphezulu.
Ukushisa Kwezinhlobo Ezihlukene Zedayimane
Akuwona wonke amadayimane anokusebenza okufanayo kokushisa. Ukushisa kuthonywa kakhulu ubumsulwa bekristalu, ubuningi besici, ukugcwala kokungcola, kanye nesakhiwo sekristalu.
Idayimani ngokuvamile ihlukaniswa ngezigaba eziningana, okuhlanganisa:
- Uhlobo lwe-Ia
- Uhlobo lwe-Ib
- Uhlobo IIa
- Uhlobo IIb
Phakathi kwazo, idayimane yohlobo lwe-IIa ibhekwa njengefomu elihlanzekile kakhulu, equkethe amazinga aphansi kakhulu okungcola kwe-nitrogen ne-boron. Ngenxa yalokho, ikhombisa ukuhanjiswa kokushisa okuphezulu kakhulu.
Amanani ajwayelekile okuqhuba ukushisa afaka:
| Uhlobo lwedayimane | Ukushisa Okushisayo Ekushiseni Kwegumbi (W/m·K) |
| Uhlobo lwe-Ia | 600–1000 |
| Uhlobo IIa | 2000–2200 |
| Idayimane le-CVD Elihlanzekile Kakhulu | Kufika ku-2200+ |
Ngezinhlelo zokuphathwa kokushisa, idayimani ye-Type IIa single-crystal kanye nedayimani ye-CVD polycrystalline esezingeni eliphezulu yizona zinto ezisetshenziswa kakhulu.
Idayimane Iqhuba Kanjani Ukushisa?
Imfihlo isesimeni se-athomu sedayimane.
Idayimane ine-lattice yekristalu eyi-cubic lapho i-athomu ngayinye yekhabhoni ihlanganiswa khona nama-athomu amane ekhabhoni angomakhelwane ngezibopho eziqinile ze-sp³ covalent, ezakha isakhiwo se-tetrahedral esizinzile kakhulu.
Ngenxa yokuthi wonke ama-electron e-valence aboshelwe ngokuqinile ngaphakathi kwalezi zibopho ze-covalent, idayimane cishe ayinawo ama-electron amahhala ngakho-ke isebenza njengesivikelo sikagesi.
Kodwa-ke, ukuthuthwa kokushisa ngedayimane kusebenza kahle kakhulu.
Ukudluliselwa Kokushisa Ngama-Phonon
Kudayimane, amandla okushisa athwalwa ngokuyinhloko ngama-phononi—ukudlidliza okulinganiselwe kwama-athomu ngaphakathi kwe-crystal lattice.
Ukusebenza kahle kokudluliselwa kokushisa kuncike endleleni ekhululekile ye-phonon, emele ibanga elingahanjwa ama-phonon ngaphambi kokuba ahlakazeke.
Izici ezinciphisa ukuhanjiswa kokushisa zifaka:
- Ukungcola kwe-nitrogen
- Izinsalela ze-catalyst zensimbi
- Amaphutha ekristalu
- Ukuhlukaniswa
- Imingcele yokusanhlamvu
- Imifantu emincane
- Ukuhlanekezelwa kwe-lattice
Uma ama-phononi eshayisana nalezi ziphambeko, ukunyakaza kwawo kuyaphazamiseka, okunciphisa ukusebenza kahle kokudlulisa ukushisa.
Ngakho-ke, uma ikristalu yedayimane ihlanzekile futhi iphelele ngokwesakhiwo, kulapho ukuhanjiswa kwayo kokushisa kukhuphuka khona. Lokhu kuchaza ukuthi kungani idayimane yohlobo lwe-IIa kanye nedayimane ye-CVD esezingeni eliphezulu zibonisa ukusebenza okuphezulu kokushisa uma kuqhathaniswa namanye amamaki edayimane.
Izinzuzo ze-Diamond Heat Spreaders
Uma kuqhathaniswa nezinto zokuphatha ukushisa zendabuko, izisakaza zokushisa zedayimane zinikeza izinzuzo eziningana ezibalulekile:
Ukushisa Okuphezulu Kakhulu
Ukususwa kokushisa okusheshayo kusiza ukugcina amazinga okushisa okusebenza eqinile ngisho nangaphansi kwamandla amakhulu.
Ukwanda Okuphansi Kokushisa
I-coefficient yedayimane yokwandisa ukushisa cishe ingu-0.8 × 10⁻⁶/K, ihambisana eduze nezinto eziningi ze-semiconductor futhi inciphisa ukucindezeleka kokushisa.
Ukufakwa Kokushisa Kukagesi
Ngokungafani nethusi noma i-aluminium, idayimane inikeza ukuhanjiswa kokushisa okuhle kakhulu ngaphandle kokubeka engcupheni ukuhlukaniswa kukagesi.
Umklamo Olula
Idayimani inika amandla izixazululo zokuphathwa kokushisa ezincane nezilula zamadivayisi kagesi amancane.
Ukuthembeka Kwesikhathi Eside
Ukungangeni kwamakhemikhali kwedayimane kanye nezakhiwo zayo eziyingqayizivele zenza kube nokuqina okuphezulu ngaphansi kwezimo zokusebenza ezidinga amandla.
Ukusetshenziswa kweDayimane Yokushisa Okuphezulu
Njengoba ubuchwepheshe bokukhiqiza buqhubeka nokuthuthuka, izinto zokusabalalisa ukushisa kwedayimane zithola ukusetshenziswa okwandayo ku:
Amadivayisi e-Semiconductor
- Ama-elekthronikhi kagesi e-GaN
- Amamojula wamandla e-SiC
- Amadivayisi e-RF asebenza imvamisa ephezulu
- Ubuchwepheshe obuthuthukisiwe bokupakisha
Izinhlelo ze-Laser
- Ama-diode e-laser anamandla aphezulu
- Ama-laser e-Solid-state
- Imishini ye-laser yezimboni
I-Aerospace Electronics
- Izinhlelo zokuxhumana zesathelayithi
- Amamojula erada
- Izinto zikagesi ezishisa kakhulu
Ubuhlakani Bokwenziwa kanye Nezikhungo Zedatha
- Izisheshisi ze-AI
- Amaprosesa asebenza kahle kakhulu
- Amapulatifomu ekhompyutha athuthukisiwe
Amadivayisi Optical kanye ne-Photonic
- Izingxenye ezibonakalayo eziqondile
- Izinhlelo ze-LED ezinamandla aphezulu
- Amasekethe ahlanganisiwe e-Photonic
Ochwepheshe bezimboni babheka kakhulu idayimane njengenye yezinto zokuphatha ukushisa zesizukulwane esilandelayo ezithembisayo kakhulu zobuchwepheshe obuthuthukisiwe be-elekthronikhi kanye ne-semiconductor.
Ikusasa Lobuchwepheshe Bokuphathwa Kokushisa Kwedayimane
Njengoba ubuningi bamandla buqhubeka nokukhula kuzo zonke izimboni ze-semiconductor, ezokuxhumana, ezimoto, kanye nezindiza, isidingo sezixazululo zokushisa ezithuthukisiwe sizokhula kuphela.
Ngokuthuthuka okuqhubekayo kobuchwepheshe bokukhiqiza idayimane be-HPHT kanye ne-CVD, izinto zedayimane ezisebenzisa ukushisa okuphezulu ziya ngokuya zifinyeleleka kalula futhi zingabizi kakhulu kunanini ngaphambili.
Kusukela ekupakishweni kwe-semiconductor kuya kuma-AI computing kanye nezinhlelo zezindiza, idayimane liyashintsha lisuka ezintweni ezisezingeni eliphezulu liye esivivinyweni esibalulekile sezinto zikagesi zesizukulwane esilandelayo.
Inhlanganisela yayo engenakuqhathaniswa yokuqhuba ukushisa, ukuvikela ugesi, ukwanda kokushisa okuphansi, kanye nokuqina komshini kubeka idayimane njengenye yezinto zokuphatha ukushisa ezibaluleke kakhulu esikhathini esizayo.