Sputtered AZO Thin Films for TCO and Back Reflector Applications in Improving the Efficiency of Thin Film a-Si:H Solar Cells

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• 作者：Arokiyadoss Rayerfrancis ; P. Balaji Bhargav ; Nafis Ahmed ; Sekhar Bhattacharya…
• 关键词：AZO ; a ; Si ; H solar cell ; Back reflector ; Structural ; Electrical ; Optical properties
• 刊名：SILICON
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：9
• 期：1
• 页码：31-38
• 全文大小：2,316 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Inorganic Chemistry
  Materials Science
  Organic Chemistry
  Polymer Sciences
  Biomedical Engineering
  Nanotechnology
  
• 出版者：Springer Netherlands
• ISSN：1876-9918
• 卷排序：9

文摘

We report the properties of Al doped ZnO (AZO) thin films on glass substrates and its effect on the efficiency of amorphous silicon (a-Si:H) solar cells as the back reflector. Oriented AZO thin films were grown using DC magnetron sputtering by varying Ar gas flow rates. The influence of Ar flow rate on the structural, electrical and optical properties of AZO thin films suitable for transparent conducting oxide (TCO) and back reflector applications was investigated. The (a-Si:H) solar cells, with and without AZO back reflector, were fabricated on FTO coated glass substrates using the PECVD technique. The solar cells were tested using a Sun simulator under AM 1.5 condition. Enhancement in current density from 12.46 to 14.24 mA/cm2 with the AZO back reflector was observed, thereby increasing the efficiency of the solar cell from 6.38 to 7.82 %, respectively.