Isi ihe na-emetụta ịdị n'otu nke radial resistivity nke otu kristal bụ flatness nke interface mmiri siri ike na obere mmetụta ụgbọ elu n'oge uto kristal.
Mmetụta nke flatness nke ihe siri ike-mmiri interface N'oge kristal ibu, ma ọ bụrụ na agbaze na-akpali akpali even, the hà eguzogide n'elu bụ ihe siri ike-mmiri interface (ihe na-adịghị ọcha ịta na gbazee dị iche iche na adịghị ọcha ịta na crystal, otú ahụ. resistivity dị iche iche, na nguzogide bụ nhata naanị na interface siri ike-mmiri). Mgbe adịghị ọcha K <1, interface convex na gbazee ga-eme ka radial resistivity dị elu n'etiti na ala na nsọtụ, mgbe interface concave na gbazee bụ ihe na-abụghị. The radial resistivity uniformity nke larịị siri ike-mmiri interface ka mma. A na-ekpebi ọdịdị nke interface mmiri siri ike n'oge ịdọrọ kristal site na ihe ndị dị ka nkesa ebe okpomọkụ na oke ọrụ kristal na-arụ ọrụ. N'ime otu kristal a dọtara kwụ ọtọ, ọdịdị nke elu mmiri siri ike bụ nsonaazụ nke ngwakọta nke ihe ndị dị ka nkesa ọkụ ọkụ na ikpo ọkụ kristal.
Mgbe ị na-adọkpụ kristal, enwere ụdị mgbanwe ọkụ anọ dị na interface mmiri siri ike:
Okpomọkụ na-adịghị mma nke mgbanwe nke oge ewepụtara site na nkwụsi ike silicon a wụrụ awụ
Okpomọkụ conduction nke gbazee
Ntugharị ọkụ na-agbago elu site na kristal
Ọkụ na-ekpo ọkụ n'èzí site na kristal
The latent okpomọkụ bụ otu maka dum interface, na size adịghị agbanwe agbanwe mgbe uto na-adịgide adịgide. (Nduzi okpomọkụ ngwa ngwa, jụrụ oyi ngwa ngwa, yana ọnụ ọgụgụ siri ike na-abawanye)
Mgbe isi nke kristal na-eto eto dị nso na mkpanaka mkpụrụ osisi kristal mmiri jụrụ oyi nke otu ọkụ kristal, gradient okpomọkụ dị na kristal buru ibu, nke na-eme ka ntụgharị ọkụ ogologo oge nke kristal dị elu karịa okpomọkụ radieshon, ya mere, ihe siri ike-mmiri interface convex ka gbazee.
Mgbe kristal na-etolite n'etiti, ntụgharị ọkụ ogologo oge na-ekpo ọkụ na-ekpo ọkụ n'elu, ya mere interface ahụ kwụ ọtọ.
Na ọdụ nke crystal, ogologo okpomọkụ conduction bụ ihe na-erughị elu radieshon okpomọkụ, na-eme ka ihe siri ike-mmiri interface concave na gbazee.
Iji nweta otu kristal nwere otu radial resistivity, a ga-edorịrị interface nke mmiri siri ike.
Ụzọ ndị a na-eji bụ: ①Hazie usoro ikpo ọkụ kristal iji belata gradient radial okpomọkụ nke ebe okpomọkụ.
② Gbanwee paramita ọrụ ịdọrọ kristal. Dịka ọmụmaatụ, maka convex interface na agbaze, welie ọsọ ịdọrọ iji bulie ọnụego kristal siri ike. N'oge a, n'ihi na-abawanye na crystallization latent okpomọkụ tọhapụrụ na interface, na-agbaze okpomọkụ nso interface na-abawanye, na-eme ka agbaze nke akụkụ nke crystal na interface, na-eme ka interface dị larịị. N'ụzọ megidere nke ahụ, ọ bụrụ na interface nke na-eto eto na-agbaze n'ebe gbazee, ọ nwere ike ibelata ọnụego uto, na agbaze ahụ ga-eme ka olu kwekọrọ na ya sie ike, na-eme ka interface ahụ dị larịị.
③ Gbanwee ọsọ ntụgharị nke kristal ma ọ bụ crucible. Ịbawanye ọsọ ntụgharị kristal ga-eme ka mmiri mmiri na-ekpo ọkụ dị elu na-aga site na ala ruo n'elu na interface mmiri siri ike, na-eme ka interface ahụ gbanwee site na convex gaa na concave. Ntuziaka nke mmiri mmiri na-asọba na-eme site na ntụgharị nke crucible bụ otu ihe ahụ nke convection eke, na mmetụta ya kpamkpam na-emegide nke ntụgharị kristal.
④ Ịbawanye ogo nke n'ime ime nke crucible na dayameta nke kristal ga-eme ka ihe mgbagwoju anya nke mmiri siri ike, ma nwee ike ibelata nkwụsịtụ nkwụsị na ikuku oxygen na kristal. N'ozuzu, ndị crucible dayameta: crystal dayameta = 3 ~ 2.5: 1.
Mmetụta nke obere mmetụta ụgbọelu
Igwe mmiri siri ike nke uto kristal na-atụgharịkarị n'ihi njedebe nke isotherm gbazee na crucible. Ọ bụrụ na a na-ebuli kristal ngwa ngwa n'oge uto kristal, obere ụgbọ elu dị larịị ga-apụta na interface mmiri siri ike nke (111) germanium na silicon single crystals. Ọ bụ ụgbọ elu (111) atomịk juru n'ọnụ, nke a na-akpọkarị obere ụgbọ elu.
Ntinye uche na-adịghị ọcha na mpaghara obere ụgbọ elu dị nnọọ iche na nke dị na mpaghara ụgbọ elu na-abụghị obere. Ihe omume a nke nkesa adịghị mma nke adịghị ọcha na mpaghara obere ụgbọ elu ka a na-akpọ mmetụta obere ụgbọ elu.
N'ihi obere mmetụta ụgbọ elu, nkwụsị nke obere mpaghara ụgbọ elu ga-ebelata, na n'ọnọdụ siri ike, eriri ọkpọkọ adịghị ọcha ga-apụta. Iji kpochapụ radial resistivity inhomogeneity kpatara site na obere mmetụta ụgbọ elu, ihe siri ike-mmiri interface kwesịrị ka larịị.
Nabata ndị ahịa ọ bụla si n'akụkụ ụwa niile ka ha bịa leta anyị maka mkparịta ụka ọzọ!
https://www.semi-cera.com/
https://www.semi-cera.com/tac-coating-monocrystal-growth-parts/
https://www.semi-cera.com/cvd-coating/
Oge nzipu: Jul-24-2024