I-Zinc telluride (ZnTe), into ebalulekileyo ye-II-VI semiconductor, isetyenziswa kakhulu ekufumaneni i-infrared, iiseli zelanga, kunye nezixhobo ze-optoelectronic. Uphuhliso lwakutshanje kwi-nanotechnology kunye ne-green chemistry luye lwaphucula imveliso yayo. Ngezantsi kukho iinkqubo zemveliso ze-ZnTe eziphambili kunye neeparameter eziphambili, kubandakanya iindlela zendabuko kunye nophuculo lwanamhlanje:
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I. Inkqubo yeMveliso yeMveliso (Ukwenziwa ngokuthe ngqo)
1. Ukulungiswa kwezinto eziluhlaza
• I-zinc ecocekileyo kakhulu (i-Zn) kunye ne-tellurium (i-Te): I-Purity ≥99.999% (udidi lwe-5N), ixutywe kwi-1:1 molar ratio.
• Igesi ekhuselayo: I-argon (Ar) okanye i-nitrogen (N₂) ecocekileyo kakhulu ukuthintela i-oxidation.
2. Ukuhamba kweNkqubo
• Inyathelo 1: Ukwenziwa kweVacuum Melting
o Xuba i-Zn kunye ne-Te powders kwityhubhu ye-quartz uze uyikhuphe iye kwi-≤10⁻³ Pa.
o Inkqubo yokufudumeza: Fudumeza kwi-5–10°C/min ukuya kwi-500–700°C, yibambe iiyure ezi-4–6.
o I-equation yempendulo:Zn+Te→ΔZnTeZn+TeΔZnTe
• Inyathelo lesi-2: Ukutsalwa kwe-Annealing
o Faka imveliso eluhlaza kwi-400–500°C kangangeeyure ezi-2–3 ukunciphisa iziphene ze-lattice.
• Inyathelo lesi-3: Ukutyumza nokuSila
o Sebenzisa i-ball mill ukucola izinto ezinkulu ukuya kubukhulu be-particle ekujoliswe kuyo (ukucola ibhola enamandla aphezulu kwi-nanoscale).
3. Iiparameters eziphambili
• Ukuchaneka kokulawula ubushushu: ±5°C
• Izinga lokuphola: 2–5°C/min (ukuthintela ukuqhekeka koxinzelelo lobushushu)
• Ubungakanani bezinto ezikrwada: I-Zn (i-mesh eyi-100–200), i-Te (i-mesh eyi-200–300)
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II. Inkqubo Ephuculweyo Yanamhlanje (Indlela Yokunyibilikisa I-Solvothermal)
Indlela ye-solvothermal yindlela ephambili yokuvelisa i-nanoscale ZnTe, enika iingenelo ezinje ngobukhulu beesuntswana ezilawulekayo kunye nokusetyenziswa kwamandla aphantsi.
1. Izinto eziluhlaza kunye nezinyibilikisi
• Izinto ezingaphambili: I-Zinc nitrate (Zn(NO₃)₂) kunye ne-sodium tellurite (Na₂TeO₃) okanye i-tellurium powder (Te).
• Izinto ezinciphisayo: I-Hydrazine hydrate (N₂H₄·H₂O) okanye i-sodium borohydride (NaBH₄).
• Izinyibilikisi: I-Ethylenediamine (EDA) okanye amanzi anyibilikisiweyo (amanzi e-DI).
2. Ukuhamba kweNkqubo
• Inyathelo 1: Ukunyibilika kwe-Precursor
o Nyibilikisa i-Zn(NO₃)₂ kunye ne-Na₂TeO₃ kwi-1:1 molar ratio kwi-solvent xa ixutywa.
• Inyathelo lesi-2: Ukunciphisa Ukusabela
o Yongeza i-reducing agent (umz., N₂H₄·H₂O) uze uyivale kwi-autoclave enoxinzelelo oluphezulu.
o Iimeko zokusabela:
Ubushushu: 180–220°C
Ixesha: iiyure ezili-12–24
Uxinzelelo: Olwenziwa ngumntu ngokwakhe (3–5 MPa)
o I-equation yempendulo:Zn2++TeO32−+Iarhente yokunciphisa→ZnTe+Iimveliso (umz., H₂O, N₂)Zn2++TeO32−+Iarhente yokunciphisa→ZnTe+Iimveliso (umz., H₂O, N₂)Zn2++TeO32−+Iarhente yokunciphisa→ZnTe+Iimveliso (umz., H₂O, N₂)
• Inyathelo lesi-3: Emva konyango
o I-Centrifuge yokwahlula imveliso, hlamba izihlandlo ezi-3–5 nge-ethanol kunye namanzi e-DI.
o Yomisa phantsi kwe-vacuum (60–80°C kangangeeyure ezi-4–6).
3. Iiparameters eziphambili
• Uxinzelelo lwangaphambi kwe-cursor: 0.1–0.5 mol/L
• Ulawulo lwe-pH: 9–11 (iimeko ze-alkaline zivumela impendulo)
• Ulawulo lobungakanani bamasuntswana: Lungisa ngohlobo lwesinyibilikisi (umz., i-EDA ivelisa ii-nanowires; isigaba samanzi sivelisa ii-nanoparticles).
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III. Ezinye iinkqubo eziPhambili
1. Ukususwa koMphunga weKhemikhali (i-CVD)
• Ukusetyenziswa: Ukulungiswa kwefilimu encinci (umz., iiseli zelanga).
• Izinto ezingaphambili: I-Diethylzinc (Zn(C₂H₅)₂) kunye ne-diethyltellurium (Te(C₂H₅)₂).
• Iiparameter:
o Ubushushu bokuhlanjwa: 350–450°C
o Igesi yokuthwala: Umxube we-H₂/Ar (isantya sokuhamba: 50–100 sccm)
o Uxinzelelo: 10⁻²–10⁻³ I-Torr
2. Ukuxutywa kweMishini (Ukusila iiBhola)
• Iimpawu: Ayinaso isinyibilikisi, ukwenziwa kobushushu obuphantsi.
• Iiparameter:
o Umlinganiselo webhola kwimpuphu: 10:1
o Ixesha lokusila: iiyure ezingama-20–40
o Isantya sokujikeleza: 300–500 rpm
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IV. Ulawulo loMgangatho kunye nokuHlolwa koBume
1. Uhlalutyo loBumsulwa: I-X-ray diffraction (XRD) yesakhiwo sekristale (incochoyi ephambili kwi-2θ ≈25.3°).
2. Ulawulo lweMofology: I-transmission electron microscopy (TEM) yobukhulu be-nanoparticle (eqhelekileyo: 10–50 nm).
3. Umlinganiselo we-Elemental: I-Energy-dispersive X-ray spectroscopy (EDS) okanye i-inductively coupled plasma mass spectrometry (ICP-MS) ukuqinisekisa i-Zn ≈1:1.
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V. Izinto eziqwalaselwayo kuKhuseleko kunye nokuSingqongileyo
1. Unyango lwegesi engcolileyo: Funxa i-H₂Te ngezisombululo ze-alkaline (umz., i-NaOH).
2. Ukubuyiswa kwesinyibilikisi: Phinda usebenzise izinyibilikisi zendalo (umz., i-EDA) nge-distillation.
3. Amanyathelo okukhusela: Sebenzisa iimaski zegesi (ukukhusela i-H₂Te) kunye neeglavu ezimelana nokugqwala.
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VI. Iindlela zobuchwepheshe
• Ukwenziwa okuluhlaza: Phuhlisa iinkqubo zesigaba samanzi ukunciphisa ukusetyenziswa kwesinyibilikisi sendalo.
• Ukuguqulwa kwe-doping: Ukuphucula ukuhanjiswa kwe-conductivity ngokufaka i-doping nge-Cu, i-Ag, njl.njl.
• Imveliso enkulu: Sebenzisa ii-reactors ezihamba ngokuqhubekayo ukuze ufumane iibhetshi ze-kg-scale.
Ixesha leposi: Matshi-21-2025