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Modeling of current-voltage characteristics of CdS/CdTe solar cells

✍ Scribed by Anjan, M. S. ;Kabir, M. Z.

Book ID
105366358
Publisher
John Wiley and Sons
Year
2011
Tongue
English
Weight
220 KB
Volume
208
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

An analytical model is developed to study the current–voltage characteristics of CdS/CdTe thin film solar cells by incorporating exponential photon absorption, carrier trapping, and carrier drift in the CdTe layer. An analytical expression for the external voltage dependent photocurrent is derived by solving the continuity equation for both electrons and holes. The overall load current is calculated considering the actual solar spectrum. It is found that the solar cell efficiency critically depends on the hole transport in the CdTe layer and the recombination current dominates over the ideal diode current. The theoretical model is fitted with the published experimental data and shows a very good agreement.

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