Inkqubo yokucoca i-7N tellurium idibanisa ubuchwepheshe bokucoca indawo kunye nobuchwephesha bokukristala kwicala. Iinkcukacha eziphambili zenkqubo kunye neeparameter zichazwe ngezantsi:
1. Inkqubo yokuCoca iNdawo
Uyilo lwezixhobo
Iinqanawa zokunyibilikisa ezikwindawo enye ezinezitezi ezininzi: Ububanzi obuyi-300–500 mm, ukuphakama okungu-50–80 mm, ezenziwe nge-quartz okanye i-graphite ecocekileyo kakhulu.
Inkqubo yokufudumeza: Iikhoyili ezichasene ne-semi-circular ezinokuchaneka kokulawula ubushushu obuyi-±0.5°C kunye nobushushu obuphezulu bokusebenza obuyi-850°C.
Iiparameters eziphambili
I-Vacuum: ≤1×10⁻³ Pa yonke ukuthintela i-oxidation kunye nongcoliseko.
Isantya sokuhamba kwindawo: 2–5 mm/h (ukujikeleza kwicala elinye nge-drive shaft).
I-gradient yobushushu: 725±5°C ngaphambili kwindawo enyibilikisiweyo, iphola ukuya kuthi ga kwi-<500°C kumphetho ongasemva.
Iipasi: imijikelo eli-10–15; ukusebenza kakuhle kokususa >99.9% kokungcola okunee-coefficients zokwahlulwahlulwa <0.1 (umz., Cu, Pb).
2. Inkqubo yokwenza ikristale ibe yi-Directional
Ukulungiswa kweMelt
Izinto: I-5N tellurium icociwe ngokucocwa kwendawo.
Iimeko zokunyibilika: Inyibilikiswe phantsi kwegesi ye-Ar engafakwanga (≥99.999% ubumsulwa) kwi-500–520°C kusetyenziswa ubushushu obuphezulu bokungenisa.
Ukhuseleko lokunyibilika: Isigqubuthelo segrafiti esicocekileyo kakhulu ukuze kuthintelwe ukuwohloka; ubunzulu bedama elinyibilikisiweyo bugcinwa kwi-80–120 mm.
Ulawulo lweCrystallization
Izinga lokukhula: 1–3 mm/h kunye ne-gradient yobushushu ethe nkqo ye-30–50°C/cm.
Inkqubo yokupholisa: Isiseko sobhedu esipholileyo ngamanzi sokupholisa ngokunyanzeliswa ezantsi; ukupholisa ngemitha phezulu.
Ukwahlulwa kokungcola: I-Fe, i-Ni, kunye nezinye izinto ezingcolileyo zityetyiswa kwimida yeenkozo emva kwemijikelo yokunyibilika eyi-3-5, nto leyo enciphisa uxinano ukuya kumanqanaba e-ppb.
3. IiMetriki zoLawulo loMgangatho
Isalathiso seXabiso eliQhelekileyo leParamitha
Ubumsulwa bokugqibela ≥99.99999% (7N)
Ukungcola okupheleleyo kwesinyithi ≤0.1 ppm
Umxholo weoksijini ≤5 ppm
Ukuphambuka kwendlela yekristale ≤2°
Ukumelana (300 K) 0.1–0.3 Ω·cm
Iingenelo zeNkqubo
Ukukwazi Ukukhula: Iinqanawa zokunyibilikisa ezikwindawo enye ezineeleya ezininzi zonyusa umthamo webhetshi nge-3–5× xa kuthelekiswa noyilo oluqhelekileyo.
Ukusebenza kakuhle: Ulawulo oluchanekileyo lwe-vacuum kunye nobushushu luvumela amazinga aphezulu okususa ukungcola.
Umgangatho wekristale: Amazinga okukhula kancinci kakhulu (<3 mm/h) aqinisekisa ukuba i-dislocation density iphantsi kwaye i-single-crystal igqibelele.
Le tellurium icocekileyo ye-7N ibalulekile kwizicelo eziphambili, kubandakanya ii-infrared detectors, ii-CdTe thin-film solar cells, kunye nee-semiconductor substrates.
Iireferensi:
bonisa idatha yovavanyo evela kwizifundo eziphononongwe ngontanga malunga nokucocwa kwe-tellurium.
Ixesha leposi: Matshi-24-2025