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- W2989573610 abstract "Solar cells based on hybrid organic-inorganic perovskite materials, with fascinating properties like broad optical absorption spectrum, low exciton binding energy, long charge diffusion length, and high charge mobility, have emerged as one of the promising candidates for third generation photovoltaics. Till date, power conversion efficiency (PCE) achieved in these solar cells is more than 22% by employing low-cost production techniques. The performance of high-efficiency perovskite solar cells is extremely dependent on the quality of the absorber perovskite layer like grain size, roughness and presence of defects. Here, we have done a comparative study of the performance of mixed halide CH3NH3PbIxCl3-x, single halide CH3NH3PbI3 and bulk heterojunction CH3NH3PbI3-PC71BM (BHJ) perovskite solar cells (PSCs) with p-i-n architecture. The morphology of the different perovskite layers is analyzed using scanning electron microscopy (SEM) and atomic force microscopy (AFM) to understand its influence on the device performance. Defects density of states (DOS) arising from morphological variations can critically influence the overall performance of the perovskite solar cells. The PCE of the mixed and single halide, and bulk heterojunction perovskite solar cells is correlated with the defect density of states studied by means of capacitance spectroscopy." @default.
- W2989573610 created "2019-12-05" @default.
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- W2989573610 date "2019-01-01" @default.
- W2989573610 modified "2023-09-26" @default.
- W2989573610 title "A comparative study of defect density of states for single, mixed and bulk heterojunction perovskite solar cells" @default.
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- W2989573610 doi "https://doi.org/10.1063/1.5093873" @default.
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