Electrical and optical properties of CuAlSe2grown by iodine chemical vapor transport

1991 ◽  
Vol 70 (3) ◽  
pp. 1648-1655 ◽  
Author(s):  
S. Chichibu ◽  
M. Shishikura ◽  
J. Ino ◽  
S. Matsumoto
Keyword(s):  
Optical Properties ◽  
Chemical Vapor ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Electrical And Optical Properties

Electrical and Optical Properties of CVT-grown ZnO Crystals

2009 ◽  
Vol 1201 ◽  
Author(s):  
Koji Abe ◽  
Masanori Oiwa
Keyword(s):  
Optical Properties ◽  
Partial Pressure ◽  
Carrier Concentration ◽  
Chemical Vapor ◽  
Shallow Donor ◽  
Chemical Vapor Transport ◽  
Near Band Edge ◽  
Band Edge Emission ◽  
Electrical And Optical Properties ◽  
Deep Donor

AbstractEffects of H2O partial pressure on ZnO crystal growth by chemical vapor transport (CVT) have been investigated. The use of H2O causes the increase in growth rate of ZnO, indicating that H2O acts as a dominant oxygen source in ZnO growth by CVT. The use of H2O also improves structural, electrical, and optical properties of the CVT-grown ZnO crystals. A sharp X-ray rocking curve for the ZnO (0002) reflection was obtained, and the full width at half maximum value was 38 arcsec. Strong near band edge emission was observed in photoluminescence spectra at room temperature. Both carrier concentration and Hall mobility increased with partial pressure of H2O. The dependence of the carrier concentration on temperature indicates that there exist two donors in the CVT-grown ZnO crystals. The estimated ionization energy for the shallow donor was 35±5 meV and that for the deep donor was 115±5 meV.

scholarly journals Synthesis, electronic transport and optical properties of Si:α-Fe2O3 single crystals

2016 ◽  
Vol 4 (3) ◽  
pp. 559-567 ◽  
Author(s):  
Alexander J. E. Rettie ◽  
William D. Chemelewski ◽  
Bryan R. Wygant ◽  
Jeffrey Lindemuth ◽  
Jung-Fu Lin ◽  
...  
Keyword(s):  
Optical Properties ◽  
Single Crystals ◽  
Electronic Transport ◽  
Chemical Vapor ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Silicon Doped

We report the synthesis of silicon-doped hematite (Si:α-Fe2O3) single crystals via chemical vapor transport, with Si incorporation on the order of 1019 cm−3.

Optical properties of molybdenum oxide thin films deposited by chemical vapor transport of MoO3(OH)2

2009 ◽  
Vol 97 (1) ◽  
pp. 237-241 ◽  
Author(s):  
Young Jung Lee ◽  
Young Ik Seo ◽  
Se-Hoon Kim ◽  
Dae-Gun Kim ◽  
Young Do Kim
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Molybdenum Oxide ◽  
Chemical Vapor ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Oxide Thin Films

Multiple Donors in Zinc Oxide Substrates

2002 ◽  
Vol 719 ◽  
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.

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

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.

In situ formation of highly exposed NiPS3 nanosheets on nickel foam as an efficient 3D electrocatalyst for overall water splitting

2021 ◽  
Author(s):  
Liang Fang ◽  
Yanping Xie ◽  
Peiyin Guo ◽  
Jingpei Zhu ◽  
Shuhui Xiao ◽  
...  
Keyword(s):  
Water Splitting ◽  
Nickel Foam ◽  
Chemical Vapor ◽  
Bifunctional Catalyst ◽  
Vapor Transport ◽  
Chemical Vapor Transport ◽  
Overall Water Splitting ◽  
One Step ◽  
Transport Method

Vertical NiPS3 nanosheets in situ grown on conducting nickel foam were fabricated by a facile one-step chemical vapor transport method and used as an efficient bifunctional catalyst for overall water splitting.

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