The growth of CdTe thin film by close space sublimation system

2003 ◽  
Vol 200 (2) ◽  
pp. 352-360 ◽  
Author(s):  
S. N. Alamri
Keyword(s):  
Thin Film ◽  
Cdte Thin Film ◽  
Close Space Sublimation ◽  
Space Sublimation

scholarly journals 12% efficient CdTe/CdS thin film solar cells deposited by low-temperature close space sublimation

2011 ◽  
Vol 110 (6) ◽  
pp. 064508 ◽  
Author(s):  
Judith Schaffner ◽  
Markus Motzko ◽  
Alexander Tueschen ◽  
Andreas Swirschuk ◽  
Hermann-Josef Schimper ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Low Temperature ◽  
Thin Film Solar Cells ◽  
Close Space Sublimation ◽  
Cds Thin Film ◽  
Space Sublimation

All-CSS processing of CdS/CdTe thin-film solar cells with thin CdS layers

2007 ◽  
Vol 1012 ◽  
Author(s):  
Alan Davies ◽  
J. R. Sites ◽  
R. A. Enzenroth ◽  
W. S. Sampath ◽  
K. L. Barth
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Spectral Response ◽  
Thin Film Solar Cells ◽  
Cdte Thin Film ◽  
State University ◽  
Colorado State University ◽  
Close Space Sublimation ◽  
Performance Trends ◽  
Schottky Type

AbstractCadmium Sulfide/Cadmium Telluride (CdS/CdTe) thin-film solar cells were fabricated by an in-line, close-space-sublimation (CSS) process at Colorado State University. Source temperature control was used to reduce the deposited CdS thickness. Quantum efficiency (QE) showed CdS thicknesses that varied over a range from 250 to 10 nm. Current-Voltage (J-V) measurements showed increased Jsc as CdS was thinned. Thin CdS resulted in reduced voltage (800 mV to 350 mV) and fill factor, which offset gains in current, and caused efficiencies to drop from 12.6% for thick CdS layers to 4.5% for devices with the thinnest CdS. These performance trends are consistent with calculations assuming parallel junctions of CdS/CdTe and SnO2/CdTe. Localized weak-junction formation was characterized by high-resolution laser-beam-induced current (LBIC) mapping. Greater incidence of spatial non-uniformities in photocurrent response accompanied thinning of the CdS layer, with 638-nm spectral response varying spatially by 4.5% for thin CdS devices compared to variations less than 1% for devices with thicker CdS. Non-uniformities of cells with thin CdS are highly sensitive to voltage bias and are likely indicative of parallel p-n and Schottky-type junctions.

Effect of O2 on thickness uniformity of CdTe thin film deposited using CSS

2009 ◽  
Vol 1210 ◽  
Author(s):  
Nirav D Vora ◽  
Ramesh Dhere
Keyword(s):  
Thin Film ◽  
Element Model ◽  
Cdte Film ◽  
Cdte Thin Film ◽  
Cell Efficiency ◽  
Steady State Model ◽  
Closed Space Sublimation ◽  
Effect Of Oxygen ◽  
Heat Transfers ◽  
Space Sublimation

AbstractIncorporating O2 in the closed space sublimation (CSS) of CdTe thin film has resulted in improved cell efficiencies. Many studies have been undertaken to understand this effect on cell efficiency. In this work we study the effect of oxygen on lateral uniformity of the deposited CdTe film. A finite element model has been developed to represent the mass and heat transfers involved in the CSS process. The model takes into consideration the effect of O2 by modeling its reaction with Cd vapors in the space between the source and the substrates and with the CdTe source. So a gradient of O2 from the edges to the center of the substrate can result in non-uniform oxidation of the source and subsequently a laterally non-uniform film. A steady state model solved at various temperatures, pressures, and separation distances. O2 concentration gradient was found to depend on the oxidation rate of Cd vapors and thus on temperature, total pressure, and oxygen partial pressure in the system.

scholarly journals Tunability of physical properties of (Cd:Zn)S thin film by Close Space Sublimation Process (CSSP)

2012 ◽  
Vol 22 (4) ◽  
pp. 281-287 ◽  
Author(s):  
M. Zakria ◽  
Arshad Mahmood ◽  
A. Shah ◽  
Q. Raza ◽  
Taj Muhammad khan ◽  
...  
Keyword(s):  
Thin Film ◽  
Physical Properties ◽  
Sublimation Process ◽  
Close Space Sublimation ◽  
Space Sublimation

scholarly journals Scalable and efficient Sb2S3 thin-film solar cells fabricated by close space sublimation

APL Materials ◽  
2019 ◽  
Vol 7 (4) ◽  
pp. 041105 ◽  
Author(s):  
Liping Guo ◽  
Baiyu Zhang ◽  
Shan Li ◽  
Qian Zhang ◽  
Michael Buettner ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Thin Film Solar Cells ◽  
Close Space Sublimation ◽  
Space Sublimation

The growth of a CH3NH3PbI3 thin film using simplified close space sublimation for efficient and large dimensional perovskite solar cells

2016 ◽  
Vol 9 (4) ◽  
pp. 1486-1494 ◽  
Author(s):  
Qiang Guo ◽  
Cong Li ◽  
Wenyuan Qiao ◽  
Shuang Ma ◽  
Fuzhi Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Solar Cells ◽  
Perovskite Solar Cells ◽  
High Quality ◽  
Vacuum Oven ◽  
Close Space Sublimation ◽  
Space Sublimation

We demonstrate a novel simplified close space sublimation (CSS) deposition for growing a high quality CH3NH3PbI3 thin film in a low-vacuum and even non-vacuum oven.

Texture-tuned growth of CdTe thin films by closed-space sublimation technique

2008 ◽  
Vol 23 (1) ◽  
pp. 31-34
Author(s):  
Shang Fei ◽  
Ji-kang Jian ◽  
Wu Rong ◽  
Zheng Yu-feng ◽  
Sun Yan-fei
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Optical Absorption ◽  
Band Gaps ◽  
Cdte Thin Film ◽  
Closed Space ◽  
Heating Current ◽  
Closed Space Sublimation ◽  
Cdte Thin Films ◽  
Space Sublimation

CdTe thin films were grown on indium tin oxide glass substrates by a closed-space sublimation method using a resistor heater. Crystalline structure, morphology, and band gaps of the films were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and optical absorption, respectively. The XRD analysis showed that the textures of the films were found to depend on the rate of increase in the heating current. The CdTe thin film had an (111) texture when the heating current rate was 2.0 A/min. The SEM analysis revealed that the film is composed of polyhedral grains of microns size. However, the (111) texture of the CdTe thin film observed by XRD decreased with the appearance of (220), (311), (400), (331), (422), and (511) peaks of the fcc CdTe phase when the heating current rate increased to 4.5 A/min. The (111) texture disappeared when the heating current was increased immediately from 0 A to the target current of 70 A. SEM results revealed that the grains in the film are round and the grain size is smaller than 1 μm. Optical absorption analysis showed that there is no distinctive difference in the band gaps of the films.

Sign in / Sign up

Export Citation Format

Share Document