Electrodeposited CdTe Thin Film Solar Cells: Chloride Treatment and Improved Efficiency
Research Area: | Volume 7,Issue 6,Nov.,2018 | Year: | 2018 |
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Type of Publication: | Article | Keywords: | Electrodeposited, CdTe, Solar Cells, Chloride Treatment, Improved Efficiency |
Authors: |
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Journal: | IJEIR | Volume: | 7 |
Number: | 6 | Pages: | 271-277 |
Month: | November | ||
ISSN: | 2277-5668 | ||
Abstract: | The First Solar Company has recently reported the manufacturing cost of less than US$1 per Watt for their CdTe solar panels, achieving a major milestone in the quest for grid-parity [ ]. Improving cell efficiency and reducing the processing costs will further reduce the cost of solar panels, making them viable and accessible for all. Therefore, further cost reduction requires search of low-cost growth and processing techniques to achieve similar performance. The electrodeposition technique is an attractive low cost tech- -nique with proven scalability and manufacturability in the solar cell industry. Therefore in this work, initial CdTe heterojunction solar cells were fabricated by electro- -deposition using a three electrode setup with an aqueous medium in order to explore and understand material issues and processing steps involved. The preliminary best deposition potential was established as 695 mV vs standard calomel electrode (SCE), and materials were characterized using X-ray diffraction, optical absorption and scanning electron microscopy. In this initial research work, complete devices were also fabricated and the best efficiency obtained to date for 2 mm x 2 mm devices was 8.4% with the open circuit voltage (VOC), short circuit current density (JSC) and fill factor (FF) values of 640 mV, 31 mAcm-2 and 0.42 respectively. |
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Full text: IJEIR_2386_FINAL.pdf
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