A na-ekewa mkpụrụ nke silicon carbide n'ime ụdị mkpuchi nke ọkara na ụdị conductive. Ka ọ dị ugbu a, nkọwapụta nke ngwaahịa ngwaahịa silicon carbide nwere obere mkpuchi bụ 4 inch. N'ime ahịa silicon carbide na-eduzi, nkọwapụta ngwaahịa ngwaahịa bụ isi ugbu a bụ sentimita 6.
N'ihi ngwa dị n'okpuru ala na mpaghara RF, akụkụ SiC nwere obere mkpuchi na ihe epitaxial nọ n'okpuru njikwa mbupụ site na Ngalaba Azụmahịa US. SiC nwere obere mkpuchi dị ka mkpụrụ bụ ọkacha mmasị maka GaN heteroepitaxy ma nwee atụmanya ngwa dị mkpa na mpaghara ngwa ndakwa nri. E jiri ya tụnyere kristal mismatch nke sapphire 14% na Si 16.9%, kristal mismatch nke SiC na GaN bụ naanị 3.4%. Ejikọtara ya na ultra-high thermal conductivity nke SiC, Igwe ọkụ ọkụ ọkụ dị elu na GaN ugboro ugboro na ngwa ngwa ngwa ike dị elu nke a kwadebere site na ya nwere uru dị ukwuu na radar, ngwa ngwa ngwa ike dị elu na usoro nkwurịta okwu 5G.
Nchọpụta na mmepe nke mkpụrụ osisi SiC nwere obere mkpuchi bụ mgbe niile ka a na-elekwasị anya na nyocha na mmepe nke mkpụrụ osisi SiC otu kristal. Enwere isi ihe isi ike abụọ na itolite ihe SiC nwere obere mkpuchi:
1) Belata adịghị ndị na-enye onyinye N nke ewepụtara site na graphite crucible, adsorption mkpuchi okpomọkụ na doping na ntụ ntụ;
2) Mgbe ị na-ahụ n'anya na àgwà na eletriki nke kristal, a na-ewebata ebe etiti dị omimi iji kwụọ ụgwọ ọrụ eletrik na-adịghị ọcha.
Ka ọ dị ugbu a, ndị na-emepụta ihe nwere ikike mmepụta SiC nwere ọkara mkpuchi bụ isi SICC Co, Semic Crystal Co, Tanke Blue Co, Hebei Synlight Crystal Co., Ltd.
A na-enweta kristal SiC na-eduzi site n'itinye nitrogen n'ime ikuku na-eto eto. A na-ejikarị mkpụrụ osisi silicon carbide eme ihe n'ịmepụta ngwaọrụ ike, ngwaọrụ silicon carbide nwere voltaji dị elu, oke dị ugbu a, oke okpomọkụ, ugboro dị elu, ọnwụ dị ala na uru ndị ọzọ pụrụ iche, ga-eme ka ojiji nke ngwaọrụ silicon dabere na ike dị ukwuu. ntughari arụmọrụ, nwere mmetụta dị ịrịba ama na nke dị ukwuu n'ọhịa nke ntụgharị ike dị mma. Ebe ndị bụ isi ngwa bụ ụgbọ ala eletrik / ikpo ọkụ, fotovoltaic ike ọhụrụ, ụgbọ okporo ígwè, smart grid na ihe ndị ọzọ. N'ihi na ala nke ngwaahịa ndị na-eduzi na-abụkarị ngwaọrụ ike na ụgbọ ala eletrik, fotovoltaic na mpaghara ndị ọzọ, atụmanya ngwa ahụ dịwanye ukwuu, ndị na-emepụta ihe dị ọtụtụ.
Silicon carbide kristal ụdị: A na-ahụkarị usoro nke kacha mma 4H crystalline silicon carbide nwere ike kewaa ụzọ abụọ, otu bụ cubic silicon carbide crystal ụdị nke sphalerite Ọdịdị, nke a maara dị ka 3C-SiC ma ọ bụ β-SiC, na nke ọzọ bụ hexagonal. ma ọ bụ ihe owuwu diamond nke nnukwu oge nhazi, nke bụ ụdị 6H-SiC, 4H-sic, 15R-SiC, wdg, nke a na-akpọkọ α-SiC. 3C-SiC nwere uru nke elu resistivity na n'ichepụta ngwaọrụ. Otú ọ dị, nnukwu ndakọrịta dị n'etiti Si na SiC lattice constants na ọnụọgụ mgbasawanye ọkụ nwere ike iduga n'ọtụtụ ntụpọ na oyi akwa epitaxial 3C-SiC. 4H-SiC nwere ikike dị ukwuu n'ichepụta MOSFET, n'ihi na uto kristal ya na usoro uto epitaxial oyi akwa dị oke mma, yana n'ihe gbasara ngagharị elektrọn, 4H-SiC dị elu karịa 3C-SiC na 6H-SiC, na-enye njirimara ngwa ndakwa nri ka mma maka 4H. -SiC MOSFET.
Ọ bụrụ na enwere mmebi iwu, kọntaktị hichapụ
Oge nzipu: Jul-16-2024