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The efficiency of CdTe based solar cell can be increased using ternary CdZnTe material as absorber layer. Cd1−xZnxTe has tunable bandgap depending on the composition. In this work the bandgap of CdZnTe layer (1.57 eV) which is in the optimum range, can be achieved with Zn composition of x=0.1. First the carrier concentration of absorber layer in the baseline case is increased then the thicknesses...
Zn(O,S) thin films were deposited by chemical bath deposition (CBD), atomic layer deposition, and sputtering. Composition of the films and band gap were measured and found to follow the trends described in the literature. CBD Zn(O,S) parameters were optimized and resulted in an 18.5% efficiency cell that did not require post annealing, light soaking, or an undoped ZnO layer. Promising results were...
Nanoscale depth-resolved and cross sectional cathodoluminescence spectroscopy (DRCLS) provides correlations of local electronic and chemical structure with actual solar cell performance in sets of copper indium gallium diselenide (CIGS)/CdS/ZnO/ITO thin film solar cells. Local cross sectional and depth-dependent results throughout the various layers within the solar cells reveal local spatial variations...
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