Zinc telluride (ZnTe), ihe dị mkpa nke II-VI semiconductor ihe, na-ejikarị na nchọpụta infrared, mkpụrụ ndụ anyanwụ, na ngwaọrụ optoelectronic. Ọganihu ndị na-adịbeghị anya na nanotechnology na kemịl ndụ ndụ emeela ka mmepụta ya dịkwuo mma. N'okpuru bụ usoro mmepụta ZnTe bụ isi ugbu a na ihe ndị bụ isi, gụnyere usoro ọdịnala na nkwalite ọgbara ọhụrụ:
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I. Usoro Mmepụta Omenala (Nkọwa Ọdịnihu)
1. Nkwadebe ihe eji eme ihe
• Zinc dị ọcha (Zn) na tellurium (Te): ịdị ọcha ≥99.999% (5N ọkwa), agwakọta na 1: 1 molar ratio.
• gas nchebe: argon (Ar) ma ọ bụ nitrogen (N₂) dị ọcha dị elu iji gbochie oxidation.
2. Usoro usoro
• Nzọụkwụ 1: Mmasị na-agbaze Vacuum
o Gwakọta ntụ ntụ Zn na Te n'ime tube quartz wee pụọ na ≤10⁻³ Pa.
o Usoro ikpo ọkụ: Kpoo ọkụ na 5-10 ° C / min ruo 500-700 ° C, jide maka awa 4-6.
o Nhazi nhata:Zn+Te→ΔZnTeZn+TeΔZnTe
• Nzọụkwụ 2: Mwepu
o Wepu ngwaahịa crued na 400-500°C maka awa 2–3 iji belata ntụpọ lattice.
• Nzọụkwụ 3: Ịzọpịa na sie
o Jiri igwe igwe na-egweri nnukwu ihe ka ọ bụrụ nha nke ebum n'uche (ihe igwe igwe na-enye ike maka nanoscale).
3. Ntụle isi
• izi ezi njikwa okpomọkụ: ±5°C
• Ọnụọgụgụ jụrụ oyi: 2–5°C/min (iji zere mgbawa nrụgide okpomọkụ)
• Ogo urughuru ihe eji eme ihe: Zn (ntupu 100-200), Te (200-300 ntupu)
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II. Usoro emelitere nke oge a (Usoro Solvothermal)
The solvothermal usoro bụ mainstream Usoro maka na-amị nanoscale ZnTe, àjà uru dị ka njikwa urughuru size na ala ike oriri.
1. Akụrụngwa na ihe mgbaze
• Ndị na-ebu ụzọ: Zinc nitrate (Zn (NO₃)₂) na sodium tellurite (Na₂TeO₃) ma ọ bụ tellurium ntụ ntụ (Te).
• Mbelata ndị ọrụ: Hydrazine hydrate (N₂H₄·H₂O) ma ọ bụ sodium borohydride (NaBH₄).
• Ihe mgbaze: Ethylenediamine (EDA) ma ọ bụ mmiri deionized (mmiri DI).
2. Usoro usoro
• Nzọụkwụ 1: Mgbasa mmalite
o igbari Zn(NO₃)₂ na Na₂TeO₃ na 1:1 molar ratio na ihe mgbaze n'okpuru edemede.
• Nzọụkwụ 2: Mbelata Mbelata
o Tinye ihe na-ebelata ihe (dịka ọmụmaatụ, N₂H₄·H₂O) wee mechie n'ime autoclave nwere nrụgide dị elu.
o Ọnọdụ mmeghachi omume:
Okpomọkụ: 180-220C
Oge: 12-24 awa
Nrụgide: Mepụtara onwe ya (3-5 MPa)
o Nkwekọrịta mmeghachi omume:Zn2++ TeO32-+ Onye na-ebelata ọrụ →ZnTe+Site na ngwaahịa (dịka, H₂O, N₂)Zn2++TeO32-+Mbelata ihe nnọchiteanya →ZnTe+Syproducts (dịka, H₂O, N₂)
• Nzọụkwụ 3: Mgbe ọgwụgwọ gasịrị
o Centrifuge ikewapụ ngwaahịa, saa 3-5 ugboro na ethanol na DI mmiri.
o Kpọọ n'okpuru agụụ (60-80 Celsius maka awa 4-6).
3. Ntụle isi
• Ntinye uche nke mbu: 0.1-0.5 mol/L
• njikwa pH: 9-11 (ọnọdụ alkaline na-akwado mmeghachi omume)
• Njikwa nha urughuru: Gbanwee site na ụdị ihe mgbaze (dịka ọmụmaatụ, EDA na-amịpụta nanowires; aqueous frasi na-amịpụta nanoparticles).
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III. Usoro ndị ọzọ dị elu
1. Chemical Vapor Deposition (CVD)
• Ngwa: Nkwadebe ihe nkiri dị mkpa (dịka ọmụmaatụ, mkpụrụ ndụ anyanwụ).
• Ndị na-ebu ụzọ: Diethylzinc (Zn(C₂H₅)₂) na diethyltellurium (Te(C₂H₅)₂).
• Oke:
o Ọnọdụ okpomọkụ: 350-450°C
o Gas na-ebu: ngwakọta H₂/Ar (ọnụego erute: 50-100 sccm)
o Nrụgide: 10⁻²–10⁻³ Torr
2. Mechanical Alloying (Ball Milling)
• Atụmatụ: Ngwakọta enweghị mgbaze, obere okpomọkụ.
• Oke:
o Oke bọọlụ na ntụ ntụ: 10:1
o Oge igwe ihe: 20-40 awa
o ọsọ ntụgharị: 300-500 rpm
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IV. Njikwa ogo na njirimara
1. Nyocha dị ọcha: X-ray diffraction (XRD) maka nhazi kristal (isi elu na 2θ ≈25.3 °).
2. Njikwa ọdịdị ọdịdị ọdịdị ọdịdị ọdịdị ọdịdị: microscope electron transmission (TEM) maka nha nanoparticle (nke a na-ahụkarị: 10-50 nm).
3. Elemental ratio: Energy-dispersive X-ray spectroscopy (EDS) ma ọ bụ inductively jikọtara plasma mass spectrometry (ICP-MS) iji kwado Zn ≈1: 1.
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V. Nchekwa na gburugburu ebe obibi
1. Ngwọta gas na-ekpofu: Absorb H₂Te na ngwọta alkaline (dịka, NaOH).
2. mgbake mgbaze: Megharịa organic solvents (eg, EDA) site distillation.
3. Usoro nchebe: Jiri ihe mkpuchi gas (maka nchebe H₂Te) na uwe mkpuchi na-eguzogide corrosion.
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VI. Usoro teknụzụ
• Njikọ akwụkwọ ndụ akwụkwọ ndụ: Zụlite sistemu usoro mmiri iji belata ojiji ihe mgbaze organic.
• Mgbanwe doping: kwalite conductivity site na doping na Cu, Ag, wdg.
• Nnukwu mmepụta ihe: Nabata reactors na-aga n'ihu iji nweta ogbe nha-kg.
Oge nzipu: Mar-21-2025