Physical properties of Bi doped CdTe thin films grown by CSVT and their influence on the CdS/CdTe solar cells PV-properties

2007 ◽  
Vol 515 (15) ◽  
pp. 5819-5823 ◽  
Author(s):  
O. Vigil-Galán ◽  
E. Sánchez-Meza ◽  
C.M. Ruiz ◽  
J. Sastré-Hernández ◽  
A. Morales-Acevedo ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Physical Properties ◽  
Cdte Solar Cells ◽  
Cdte Thin Films

scholarly journals C-VCalculations in CdS/CdTe Thin Films Solar Cells with aCdSxTe1-xInterlayer

2013 ◽  
Vol 2013 ◽  
pp. 1-4
Author(s):  
A. Gonzalez-Cisneros ◽  
F. L. Castillo-Alvarado ◽  
J. Ortiz-Lopez ◽  
G. Contreras-Puente
Keyword(s):  
Experimental Data ◽  
Thin Films ◽  
Solar Cells ◽  
Photovoltaic Cells ◽  
Cdte Film ◽  
Vapor Transport ◽  
Cdte Solar Cells ◽  
Cdte Thin Films ◽  
Cds Film ◽  
Theoretical Results

In CdS/CdTe solar cells, chemical interdiffusion at the interface gives rise to the formation of an interlayer of the ternary compoundCdSxCdTe1-x. In this work, we evaluate the effects of this interlayer in CdS/CdTe photovoltaic cells in order to improve theoretical results describing experimentalC-V(capacitance versus voltage) characteristics. We extended our previous theoretical methodology developed on the basis of three cardinal equations (Castillo-Alvarado et al., 2010). The present results provide a better fit to experimental data obtained from CdS/CdTe solar cells grown in our laboratory by the chemical bath deposition (for CdS film) and the close-spaced vapor transport (for CdTe film) techniques.

scholarly journals Effect ofIn SituThermal Annealing on Structural, Optical, and Electrical Properties of CdS/CdTe Thin Film Solar Cells Fabricated by Pulsed Laser Deposition

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Alaa Ayad Al-mebir ◽  
Paul Harrison ◽  
Ali Kadhim ◽  
Guanggen Zeng ◽  
Judy Wu
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Solar Cells ◽  
Pulsed Laser Deposition ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Thin Film Solar Cells ◽  
Cdte Thin Film ◽  
Cdte Solar Cells ◽  
Cdte Thin Films

Anin situthermal annealing process (iTAP) has been introduced before the commonex situcadmium chloride (CdCl2) annealing to improve crystal quality and morphology of the CdTe thin films after pulsed laser deposition of CdS/CdTe heterostructures. A strong correlation between the two annealing processes was observed, leading to a profound effect on the performance of CdS/CdTe thin film solar cells. Atomic force microscopy and Raman spectroscopy show that the iTAP in the optimal processing window produces considerable CdTe grain growth and improves the CdTe crystallinity, which results in significantly improved optoelectronic properties and quantum efficiency of the CdS/CdTe solar cells. A power conversion efficiency of up to 7.0% has been obtained on thin film CdS/CdTe solar cells of absorber thickness as small as 0.75 μm processed with the optimal iTAP at 450°C for 10–20 min. This result illustrates the importance of controlling microstructures of CdTe thin films and iTAP provides a viable approach to achieve such a control.

Structural Properties of CdTe Thin Films for Solar Cell Applications Deposited on Flexible Foil Substrates

2009 ◽  
Vol 1165 ◽  
Author(s):  
Vasilios Palekis ◽  
Deidra Ranel Hodges ◽  
Don L Morel ◽  
Lee Stefanakos ◽  
Chris S Ferekides
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Growth Rate ◽  
Grain Size ◽  
Solar Cells ◽  
Solar Cell ◽  
Substrate Temperature ◽  
Source Temperature ◽  
Cdte Solar Cells ◽  
Cdte Thin Films

AbstractCadmium telluride (CdTe) is a leading thin film photovoltaic (PV) material due to its near ideal band gap of 1.45 eV and its high optical absorption coefficient. The typical CdTe thin film solar cell is of the superstrate configuration where a window layer (CdS), the absorber (CdTe), and a back contact are deposited onto a glass slide coated with a transparent electrode. Substrate CdTe solar cells where the above listed films are deposited in reverse order are not common. In this study, the growth of CdTe thin films deposited on foil substrates by the close-spaced sublimation (CSS) has been investigated for the purpose of fabricating substrate based CdTe solar cells. The CdTe films were deposited at substrate temperatures (TSUB) in the range of 300 to 600°C, and source temperatures (TSRC) in the 600 to 650°C range. The effect of the substrate-source temperature variations on the growth rate, film structure and morphology were studied using XRD and SEM. It was found that for low substrate temperature and as the growth rate increases, grain size was the same but the films appeared to be more uniform and more densely packed with less or no pinholes. The growth rate increased as the source temperature increased. The substrate temperature clearly influences the grain growth and the preferred orientation. As the substrate temperature increased the growth rate decreased and the grain size varied from 2 to 6 μm. XRD analysis showed that with the increase in substrate temperature film orientation changes from preferential along the (111) direction to a mix of (111) (220) and (311).

A novel CdTe ink-assisted direct synthesis of CdTe thin films for the solution-processed CdTe solar cells

2020 ◽  
Vol 55 (18) ◽  
pp. 7715-7730 ◽  
Author(s):  
Md. Ferdous Rahman ◽  
Jaker Hossain ◽  
Abdul Kuddus ◽  
Samia Tabassum ◽  
Mirza H. K. Rubel ◽  
...  
Keyword(s):  
Thin Films ◽  
Solar Cells ◽  
Direct Synthesis ◽  
Solution Processed ◽  
Cdte Solar Cells ◽  
Cdte Thin Films
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