Modeling of current–voltage characteristics of CdS/CdTe solar cells
Authors:
- 16 June 2011
- journal article
- research article
- Published by Wiley in Physica Status Solidi (a)
- Vol. 208 (8) , 1813-1816
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.Keywords
This publication has 12 references indexed in Scilit:
- Solar cell efficiency tables (version 35)Progress in Photovoltaics: Research and Applications, 2010
- Voltage dependent photocurrent collection in CdTe/CdS solar cellsProgress in Photovoltaics: Research and Applications, 2007
- Thin‐film solar cells: device measurements and analysisProgress in Photovoltaics: Research and Applications, 2004
- Hall effect measurements on CdTe layers electrodeposited from acidic aqueous electrolyteJournal of Electroanalytical Chemistry, 2004
- Time-resolved photoluminescence studies of CdTe solar cellsJournal of Applied Physics, 2003
- Charge collection and absorption-limited sensitivity of x-ray photoconductors: Applications to a-Se and HgI2Applied Physics Letters, 2002
- Current–Voltage Analysis of a-Si and a-SiGe Solar Cells Including Voltage-dependent Photocurrent CollectionProgress in Photovoltaics: Research and Applications, 1997
- Mathematical modeling of photoconductor transient responseIEEE Transactions on Electron Devices, 1987
- Carrier Generation and Recombination in P-N Junctions and P-N Junction CharacteristicsProceedings of the IRE, 1957
- Currents to Conductors Induced by a Moving Point ChargeJournal of Applied Physics, 1938