Cover Feature: Chemical Vapor Transport Reactions - Arguments for Choosing a Suitable Transport Agent (Z. Anorg. Allg. Chem. 21/2017)

Two chemical vapor transport methods with Zn(NH4)3Cl5 transport agent were developed to grow ZnSe bulk single crystals. Two kinds of Zn-rich ZnSe single crystals, conical crystal and flake crystal，were grown directly from untreated ZnSe polycrystals and two elements, respectively. The structure characters, purity and etch pit density were studied by rotating orientation XRD, PL spectrum and optical microscope. The contrastive investigation between two growth results indicated that the conical crystal was composed of (111) and (100) faces, and the flake crystal exhibited only (111) face. Moreover, the vicinal interface leaning to (111) face by the angle of 3.1° was the dominative growth face in vapor growth system, and growth occurs by layer-by-layer model. FWHM of RO-XRD pattern of ZnSe (111) face was 24sec for conical ZnSe crystal and 48s for ZnSe flake crystal. The results suggested that high-quality ZnSe crystals can be grown from the chemical vapor transport method with Zn(NH4)3Cl5 transport agent.

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Chemical Vapor Transport Deposition of Molybdenum Disulfide Layers Using H2O Vapor as the Transport Agent

Coatings ◽

10.3390/coatings8020078 ◽

2018 ◽

Vol 8 (2) ◽

pp. 78 ◽

Cited By ~ 4

Author(s):

◽

Keyword(s):

Molybdenum Disulfide ◽

Chemical Vapor ◽

Vapor Transport ◽

Chemical Vapor Transport ◽

Transport Agent ◽

Vapor Transport Deposition

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Multimillimeter-sized cubic boron arsenide grown by chemical vapor transport via a tellurium tetraiodide transport agent

Applied Physics Letters ◽

10.1063/1.5038025 ◽

2018 ◽

Vol 112 (26) ◽

pp. 261901 ◽

Cited By ~ 11

Author(s):

Jie Xing ◽

Xi Chen ◽

Yuanyuan Zhou ◽

James. C. Culbertson ◽

Jaime A. Freitas ◽

...

Keyword(s):

Chemical Vapor ◽

Vapor Transport ◽

Chemical Vapor Transport ◽

Transport Agent ◽

Boron Arsenide

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Multiple Donors in Zinc Oxide Substrates

MRS Proceedings ◽

10.1557/proc-719-f2.4 ◽

2002 ◽

Vol 719 ◽

Cited By ~ 2

Author(s):

K. Thonke ◽

N. Kerwien ◽

A. Wysmolek ◽

M. Potemski ◽

A. Waag ◽

...

Keyword(s):

Zinc Oxide ◽

Chemical Vapor ◽

Binding Energies ◽

Vapor Transport ◽

Chemical Vapor Transport ◽

Oxide Substrates ◽

Multiple Donors ◽

Major Donors ◽

Available Zinc ◽

Transport Technique

AbstractWe investigate by photoluminescence (PL) nominally undoped, commercially available Zinc Oxide substrates (from Eagle Picher) grown by seeded chemical vapor transport technique in order to identify residual donors and acceptors. In low temperature PL spectra the dominant emission comes from the decay of bound exciton lines at around 3.36 eV. Zeeman measurements allow the identification of the two strongest lines and some weaker lines in-between as donorrelated. From the associated two-electron satellite lines binding energies of the major donors of 48 meV and 55 meV, respectively, can be deduced.

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Growth of CuGaS2Single Crystals by Chemical Vapor Transport and Characterization

Crystal Growth & Design ◽

10.1021/cg060450o ◽

2007 ◽

Vol 7 (4) ◽

pp. 618-623 ◽

Cited By ~ 33

Author(s):

P. Prabukanthan ◽

R. Dhanasekaran

Keyword(s):

Chemical Vapor ◽

Vapor Transport ◽

Chemical Vapor Transport

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Evolution of reduction process from tungsten oxide to ultrafine tungsten powder via hydrogen

High Temperature Materials and Processes ◽

10.1515/htmp-2021-0017 ◽

2021 ◽

Vol 40 (1) ◽

pp. 171-177

Author(s):

Yue Wang ◽

Ben Fu Long ◽

Chun Yu Liu ◽

Gao An Lin

Keyword(s):

Surface Morphology ◽

Tungsten Oxide ◽

Tungsten Powder ◽

Reduction Process ◽

Chemical Vapor ◽

Transition Process ◽

Vapor Transport ◽

Fibrous Structure ◽

Chemical Vapor Transport ◽

Oxide Particles

Abstract Herein, the evolution of reduction process of ultrafine tungsten powder in industrial conditions was investigated. The transition process of morphology and composition was examined via SEM, XRD, and calcination experiments. The results show that the reduction sequence of WO2.9 was WO2.9 → WO2.72 → WO2 → W on the surface, but WO2.9 → WO2 → W inside the oxide particles. With the aid of chemical vapor transport of WO x (OH) y , surface morphology transformed into rod-like, star-shaped cracking, floret, irregularly fibrous structure, and finally, spherical tungsten particles.

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