Enhancement of Junction Behavior of ZnO/a-SiH/Polymer Thin Films for Organic Solar Cells


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Abstract


ZnO/a-SiH/polymer was fabricated by using the sputtering technique for organic solar cells. The efficiency of hydrogenated amorphous silicon combined with different types of polymers was studied. The results of I-V measurements show that the annealing temperatures have high affected on the open circuit voltage and it enhances their short circuit current. The current–voltage characteristics curve indicates that the efficiency of solar cell increased from 2% to 3.4% for the first type of polymer, ZnO/a-SiH/poly (3-hexylthiophene), with the increase of annealing temperatures. For the other type of polymer when the cell was fabricated using ZnO/a-SiH/polyvinyl chloride and ZnO/a-SiH/paraphenylene vinylene, the efficiencies increased from 2.1% to 4.1% and from 3% to 5%, respectively, with the increase of annealing temperatures. These types of polymer are good for organic solar cells but the third type is the best.
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Keywords


Organic Solar Cell; Electrical Properties of Polymers; Heterojunction Structure; Solar Cell Efficiency; Fabrication ZnO/SiH/Polymer; Thin Films

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