Annealing effects on the microstructural and optical properties of Hg0.7Cd0.3Te epilayers grown on CdTe buffer layers

2005 ◽  
Vol 40 (19) ◽  
pp. 5303-5305
Author(s):  
Y. S. Ryu ◽  
T. W. Kang ◽  
T. W. Kim
Keyword(s):  
Optical Properties ◽  
Buffer Layers ◽  
Annealing Effects ◽  
Cdte Buffer

Defects in HgCdTe grown by molecular beam epitaxy on GaAs substrates

2012 ◽  
Vol 20 (4) ◽  
Author(s):  
I. Izhnin ◽  
A. Izhnin ◽  
H. Savytskyy ◽  
O. Fitsych ◽  
N. Mikhailov ◽  
...  
Keyword(s):  
Optical Properties ◽  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Buffer Layers ◽  
Structural Defects ◽  
Donor Concentration ◽  
Ion Milling ◽  
Electrical And Optical Properties ◽  
Gaas Substrates ◽  
Cdte Buffer

AbstractThe Hall effect and photoluminescence measurements combined with annealing and/or ion milling were used to study the electrical and optical properties of HgCdTe films grown by molecular-beam epitaxy on GaAs substrates with ZnTe and CdTe buffer layers. Unintentional donor doping, likely from the substrate, which resulted in residual donor concentration of the order of 1015 cm−3, was observed in the films. Also, acceptor states, possibly related to structural defects, were observed.

Silicon excess and thermal annealing effects on structural and optical properties of co-sputtered SRO films

2016 ◽  
Vol 176 ◽  
pp. 40-46 ◽  
Author(s):  
A. Coyopol ◽  
M.A. Cardona ◽  
T. Díaz Becerril ◽  
L. Licea Jimenez ◽  
A. Morales Sánchez
Keyword(s):  
Optical Properties ◽  
Thermal Annealing ◽  
Structural And Optical Properties ◽  
Silicon Excess ◽  
Annealing Effects

Galvanic deposition of ZnO nanorods and thermal annealing effects on their optical properties

2011 ◽  
Vol 257 (13) ◽  
pp. 5519-5523 ◽  
Author(s):  
Lida Wang ◽  
Guichang Liu ◽  
Longjiang Zou ◽  
Dongfeng Xue
Keyword(s):  
Optical Properties ◽  
Thermal Annealing ◽  
Zno Nanorods ◽  
Annealing Effects ◽  
Galvanic Deposition

Doping and Annealing Effects on the Optical Bandgap of the Nickel Doped Copper Oxide Thin Films

2021 ◽  
Vol 16 (2) ◽  
pp. 243-248
Author(s):  
Fatmah S. Bahabri ◽  
Alaa Y. Mahmoud ◽  
Wafa A. Alghameeti
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Doping Concentration ◽  
Cupric Oxide ◽  
Optical Bandgap ◽  
Visible Range ◽  
Bandgap Energy ◽  
Direct Bandgap ◽  
Annealing Temperatures ◽  
Annealing Effects

In this work, we study the optical properties of the Nickel doped cupric oxide Ni-CuO thin films with Ni various doping concentrations (0, 20, 30, 50, 70, and 80%), at two different annealing temperatures; 200 and 400 °C. The absorbance and optical bandgap for the films are calculated and compared. We find that all films exhibit clear peaks in the visible range, with the increase in the absorptivity via increasing both annealing and Ni concentration. We also find that the annealing affects the shape of the absorbance peaks to be narrowed and blue shifted. Investigation on the direct bandgap energy shows that all films exhibit large direct gap; ranging from 3.87 to 4.01 eV. For non-annealed films, direct bandgap increases with increasing the Ni concentration, while for the annealed samples, the direct bandgap generally decreases by annealing, and with increasing the doping concentration. For the indirect bandgap analysis, the calculated values of the bandgap are ranging from 0.62 to 1.96 eV. We find that for non-annealed films, the indirect bandgap increases with increasing the doping concentration, while after annealing, the bandgap decreases with increasing the doping concentration for the annealing at 200 and 400 °C, with more decreasing in the gap at 400 °C.

Thermal Annealing Effects of Initial Zn Layers on the Structural and the Optical Properties of ZnO Thin Films Grown by Using PA-MBE

2011 ◽  
Vol 58 (5(1)) ◽  
pp. 1320-1323 ◽  
Author(s):  
Min Young Cho ◽  
Hyun Young Choi ◽  
Min Su Kim ◽  
Jae-Young Leem ◽  
Dong-Yul Lee ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Thermal Annealing ◽  
Zno Thin Films ◽  
Annealing Effects

Annealing effects on the structure and optical properties of GeSe2 and GeSe4 films prepared by PLD

2009 ◽  
Vol 484 (1-2) ◽  
pp. 645-648 ◽  
Author(s):  
R.K. Pan ◽  
H.Z. Tao ◽  
H.C. Zang ◽  
X.J. Zhao ◽  
T.J. Zhang
Keyword(s):  
Optical Properties ◽  
Annealing Effects

Low temperature annealing effects on the structure and optical properties of ZnO films grown by pulsed laser deposition

Vacuum ◽  
2010 ◽  
Vol 84 (11) ◽  
pp. 1280-1286 ◽  
Author(s):  
B.L. Zhu ◽  
X.Z. Zhao ◽  
F.H. Su ◽  
G.H. Li ◽  
X.G. Wu ◽  
...  
Keyword(s):  
Optical Properties ◽  
Low Temperature ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Zno Films ◽  
Low Temperature Annealing ◽  
Annealing Effects

Annealing effects on the physical and optical properties of Cu2S/CIGS core/shell nanowire arrays

2015 ◽  
Vol 119 (3) ◽  
pp. 1149-1154 ◽  
Author(s):  
Liqiang Li ◽  
Yaqiang Liu ◽  
Wenxing Zhang ◽  
Wencong Chen ◽  
Peng Li ◽  
...  
Keyword(s):  
Optical Properties ◽  
Nanowire Arrays ◽  
Core Shell ◽  
Annealing Effects
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