Zinc Telluride (ZnTe) Gahunda yumusaruro

Zinc telluride (ZnTe), ikintu cyingenzi cya II-VI igice cya kabiri, ikoreshwa cyane mugutahura infragre, selile izuba, nibikoresho bya optoelectronic. Iterambere rya vuba muri nanotehnologiya na chimie yicyatsi ryateje imbere umusaruro waryo. Hano hepfo inzira nyamukuru ZnTe ikora nibikorwa byingenzi, harimo uburyo gakondo hamwe niterambere rigezweho:
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I. Inzira Yumusaruro gakondo (Synthesis itaziguye)
1. Gutegura ibikoresho bito
• Zinc-yera cyane (Zn) na tellurium (Te): Ubuziranenge ≥99.999% (icyiciro cya 5N), kivanze mukigereranyo cya 1: 1.
• Gazi ikingira: argon-isukuye cyane (Ar) cyangwa azote (N₂) kugirango wirinde okiside.
2. Inzira zitemba
• Intambwe ya 1: Synthesis ya Vacuum
o Kuvanga ifu ya Zn na Te mumashanyarazi ya quartz hanyuma uhungire kuri ≤10⁻³ Pa.
o Gahunda yo gushyushya: Shyushya kuri 5-10 ° C / min kugeza 500-700 ° C, fata amasaha 4-6.
o Ikigereranyo cyibisubizo: Zn + Te → ΔZnTeZn + TeΔZnTe
• Intambwe ya 2: Annealing
o Shyira ibicuruzwa kuri 400-500 ° C mumasaha 2-3 kugirango ugabanye inenge.
• Intambwe ya 3: Kumenagura no gushungura
o Koresha urusyo rwumupira kugirango usya ibintu byinshi mubunini bugenewe (gusya umupira w'ingufu nyinshi kuri nanoscale).
3. Ibipimo by'ingenzi
• Kugenzura ubushyuhe neza: ± 5 ° C.
• Igipimo cyo gukonja: 2-5 ° C / min (kugirango wirinde gucika intege)
Ingano y'ibikoresho bito: Zn (mesh 100-200), Te (mesh 200–300)
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II. Uburyo bugezweho butezimbere (Solvothermal Method)
Uburyo bwa solvothermal nuburyo bukoreshwa muburyo bwo gukora nanoscale ZnTe, itanga ibyiza nkubunini buke bugenzurwa no gukoresha ingufu nke.
1. Ibikoresho bito n'ibishishwa
• Precursors: Zinc nitrate (Zn (NO₃) ₂) na sodium tellurite (Na₂TeO₃) cyangwa ifu ya tellurium (Te).
Kugabanya imiti: Hydrazine hydrate (N₂H₄ · H₂O) cyangwa sodium borohydride (NaBH₄).
• Umuti: Ethylenediamine (EDA) cyangwa amazi ya deionised (amazi ya DI).
2. Inzira zitemba
• Intambwe ya 1: Iseswa ryibanze
o Gabanya Zn (NO₃) ₂ na Na₂TeO₃ mukigereranyo cya 1: 1 mumisemburo ya solve ikurura.
• Intambwe ya 2: Kugabanya reaction
o Ongeramo ibikoresho bigabanya (urugero, N₂H₄ · H₂O) hanyuma ushireho kashe muri autoclave yumuvuduko mwinshi.
o Ibisabwa:
Ubushyuhe: 180-220 ° C.
 Igihe: amasaha 12-24
 Umuvuduko: Yabyaye wenyine (3-5 MPa)
o Ikigereranyo cya reaction: Zn2 ++ TeO32− + Kugabanya umukozi → ZnTe + Ibicuruzwa (urugero, H₂O, N₂) Zn2 ++ TeO32− + Kugabanya umukozi → ZnTe + Ibicuruzwa (urugero, H₂O, N₂)
• Intambwe ya 3: Nyuma yo kuvurwa
o Centrifuge gutandukanya ibicuruzwa, koza inshuro 3-5 n'amazi ya Ethanol na DI.
o Kuma munsi ya vacuum (60-80 ° C mumasaha 4-6).
3. Ibipimo by'ingenzi
• Kwibanda kwa precursor: 0.1–0.5 mol / L.
• kugenzura pH: 9-11 (imiterere ya alkaline itonesha reaction)
• Kugenzura ingano yubunini: Hindura ukoresheje ubwoko bwa solvent (urugero, EDA itanga nanowire; icyiciro cyamazi gitanga nanoparticles).
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III. Ibindi Bikorwa Byambere
1. Kubika imyuka ya chimique (CVD)
• Gushyira mu bikorwa: Gutegura firime yoroheje (urugero, imirasire y'izuba).
• Ababanjirije: Diethylzinc (Zn (C₂H₅) ₂) ​​na diethyltellurium (Te (C₂H₅) ₂).
• Ibipimo:
o Ubushyuhe bwo kubitsa: 350-450 ° C.
o Gazi itwara: H₂ / Ar ivanze (igipimo cyo gutemba: 50-100 sccm)
o Umuvuduko: 10⁻² - 10⁻³ Torr
2. Gukoresha imashini (Gusya umupira)
• Ibiranga: Sintezike yubusa, ubushyuhe buke.
• Ibipimo:
o Ikigereranyo cy'umupira-ifu: 10: 1
o Igihe cyo gusya: amasaha 20-40
o Umuvuduko wo kuzunguruka: 300-500 rpm
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IV. Kugenzura ubuziranenge no kuranga
1. Isesengura ryera: Itandukaniro rya X-ray (XRD) kumiterere ya kirisiti (impinga nyamukuru kuri 2θ ≈25.3 °).
2. Igenzura rya Morphologiya: Ikwirakwizwa rya electron microscopi (TEM) kubunini bwa nanoparticle (bisanzwe: 10-50 nm).
3. Ikigereranyo cyibanze: Ingufu-ikwirakwiza X-ray yerekanwe (EDS) cyangwa plasma ihujwe na plasma mass spectrometrie (ICP-MS) kugirango yemeze Zn ≈1: 1.
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V. Ibitekerezo byumutekano nibidukikije
1. Gutunganya imyanda: Absorb H₂Te hamwe nibisubizo bya alkaline (urugero, NaOH).
2.
3. Ingamba zo gukingira: Koresha masike ya gaze (kugirango urinde H₂Te) hamwe na gants zidashobora kwangirika.
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VI. Inzira z'ikoranabuhanga
• Icyatsi kibisi: Gutezimbere sisitemu yo mumazi kugirango ugabanye imikoreshereze yumubiri.
• Guhindura Doping: Kongera ubushobozi bwa doping hamwe na Cu, Ag, nibindi
• Umusaruro munini: Emera reaction-zihoraho zitemba kugirango ugere kuri kg-nini.