https://scholars.lib.ntu.edu.tw/handle/123456789/499938
標題: | Nanoscale Teflon coated surface nano-roughened Si solar cells with Teflon thickness dependent efficiency and hydrophobicity | 作者: | Meng, F.-S. Pai, Y.-H. Lin, Y.-H. GONG-RU LIN |
公開日期: | 2011 | 起(迄)頁: | 001495-001497 | 來源出版物: | Conference Record of the IEEE Photovoltaic Specialists Conference | 摘要: | By employing the SiN and Teflon-like films as surface anti-reflective coatings, the sub-wavelength nano-pillar roughened poly-crystalline Si photovoltaic solar cells are characterized and compared. With 22nm-thick Teflon-like film coating, the bared Si PV cell shows filling factor and energy conversion efficiency of 0.70 and 10.89%, respectively, which are comparable with a standard cell employing standard SiN anti-reflective film to coat the bared Si PV cell. The water contact angle increases from 55° to 92.6° as the Teflon-like film thickness enlarges to 200 nm or larger, whereas the conversion efficiency of the Telfon-like film coated Si PV cell slightly degrades by 1.4% as compared to that of the bared Si PV cell. Lengthening the nano-roughened structure further results in a decreasing reflectance from 30% to 5% and an enhanced scattering to degrade the transmittance from 15% to 3% in visible wavelength region. The nano-pillar surface not only induces the multiple scattering to enhance the Haze and to reduce surface reflectance, but also shadows the incident light to reach the inner cell. © 2011 IEEE. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/499938 | DOI: | 10.1109/PVSC.2011.6186242 | SDG/關鍵字: | Anti reflective coatings; Antireflective films; Coated surface; Enhanced scattering; Filling factor; Film coatings; Incident light; Nano scale; Photovoltaic solar cells; Polycrystalline; Si solar cells; Standard cell; Sub-wavelength; Surface reflectance; Visible wavelengths; Water contact angle; Coatings; Contact angle; Conversion efficiency; Electric batteries; Photovoltaic cells; Photovoltaic effects; Reflection; Silicon; Silicon nitride; Polytetrafluoroethylenes |
顯示於: | 電機工程學系 |
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