I-7N Tellurium Crystal Imininingwane Yokukhula Nenqubo Yokuhlanjululwa Ngamapharamitha Obuchwepheshe

Inqubo yokuhlanza i-7N tellurium ihlanganisa ubuchwepheshe bokucwengisiswa kwendawo kanye nobuchwepheshe becrystallization obuqondisayo. Imininingwane yenqubo esemqoka namapharamitha kuchazwe ngezansi:

1. Inqubo Yokucwenga Indawo
I-Equipment Design

Izikebhe ezincibilika zezindawo ezincibilikayo ezinezingqimba eziningi: Ububanzi obungu-300–500 mm, ubude bungu-50–80 mm, ezenziwe nge-high-purity quartz noma igraphite.
Isistimu yokushisisa: Amakhoyili amelana ne-semi-circular anembayo yokulawula izinga lokushisa okungu-±0.5°C kanye nezinga lokushisa eliphezulu elisebenzayo elingu-850°C.
Amapharamitha angukhiye

I-vacuum: ≤1×10⁻³ Pa kuyo yonke indawo ukuze kuvinjelwe i-oxidation nokungcola.
Isivinini sokuhamba endaweni: 2–5 mm/h (ukuzungezisa indawo eyodwa nge-drive shaft).
I-gradient yezinga lokushisa: 725±5°C endaweni encibilikisiwe ngaphambili, ipholisa ibe ngu-<500°C emaphethelweni alandelayo.
Ukudlula: imijikelezo eyi-10-15; ukusebenza kahle kokususa >99.9% ngokungcola okunama-coefficients okuhlukanisa <0.1 (isb., Cu, Pb).
2. I-Directional Crystallization Process
Melt Ukulungiselela

Material: I-5N tellurium ihlanzwe ngokucwengisiswa kwendawo.
Izimo zokuncibilika: Incibilike ngaphansi kwe-Ar gas engasebenzi (≥99.999% ubumsulwa) ku-500–520°C kusetshenziswa ukushisisa kwe-high-frequency induction.
Ukuvikelwa kwe-Melt: Ikhava ye-graphite ehlanzekile kakhulu yokucindezela ukuvuvukalisa; ukujula kwechibi elincibilikisiwe kugcinwe ku-80-120 mm.
Ukulawulwa kweCrystallization

Izinga lokukhula: 1–3 mm/h enezinga lokushisa eliqondile elingu-30–50°C/cm.
Uhlelo lokupholisa: Isisekelo sethusi esipholiswe ngamanzi sokupholisa phansi okuphoqelekile; ukupholisa ngemisebe phezulu.
Ukuhlukaniswa kokungcola: I-Fe, i-Ni, nokunye ukungcola kunothiswa emingceleni yokusanhlamvu ngemva kwemijikelezo ye-3-5 yokuncibilika, kunciphisa ukugxila kumazinga we-ppb.
3. I-Quality Control Metrics
Inkomba Yevelu Ejwayelekile Yepharamitha
Ukuhlanzeka kokugcina ≥99.99999% (7N)
Isamba sokungcola kwensimbi ≤0.1 ppm
Okuqukethwe komoyampilo ≤5 ppm
Ukuchezuka kwe-Crystal orientation ≤2°
Ukungazweli (300 K) 0.1–0.3 Ω·cm
Izinzuzo Zenqubo
Ukunwebeka: Izikebhe ezincibilika zezindawo ezincibilika zezendlalelo eziningi zandisa umthamo weqoqo ngo-3–5× uma kuqhathaniswa nemiklamo evamile.
Ukusebenza kahle: I-vacuum enembile nokulawula okushisayo kunika amandla amazinga aphezulu okususwa kokungcola.
Ikhwalithi ye-Crystal: Amazinga okukhula anensa kakhulu (<3 mm/h) aqinisekisa ukuminyana okuphansi kokususwa kanye nobuqotho bekristalu eyodwa.
Le tellurium ecwengiwe ye-7N ibalulekile ezinhlelweni ezithuthukisiwe, okuhlanganisa izitholi ze-infrared, amaseli elanga elanga acwebezelayo e-CdTe, nama-semiconductor substrates.

Izinkomba:
isho idatha yokuhlola evela ezifundweni ezibuyekezwe kontanga ekuhlanzeni kwe-tellurium.