期刊
NANOSCALE
卷 7, 期 21, 页码 9816-9824出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5nr01528f
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资金
- Hi-Tech Research and Development Program of China [2013AA050302]
- National Natural Science Foundation of China [61474065]
- Tianjin Research Key Program of Application Foundation and Advanced Technology [15JCZDJC31300]
- Key Project in the Science & Technology Pillar Program of Jiangsu Province [BE2014147-3]
- International Cooperation Projects of the Ministry of Science and Technology [2014DFE60170]
- Specialized Research Fund for the PhD Program of Higher Education [20120031110039]
Transparent conductive front electrodes (TCFEs) deployed in photovoltaic devices have been extensively studied for their significance in transporting carriers, coupling and trapping the incident photons in high-performing solar cells. The trade-off between the light-transmission, electrical, and scattering properties for TCFEs to achieve a broadband improvement in light absorption in solar cells while maintaining a high electrical performance has become the key issue to be tackled. In this paper, we employ self-assembled polystyrene (PS) spheres based on a sauna-like method as a template, followed by a double-layer deposition and then successfully fabricate highly-transparent, well-conductive, and large-scale periodically-textured ZnO TCFEs with broadband light trapping properties. A sheet resistance below 15 Omega sq(-1) was achieved for the periodically-textured ZnO TCFEs, with a concomitant average transmission of 81% (including the glass substrate) in the 400-1100 nm spectral range, a haze improvement in a broadband spectral range, and a wider scattering angular domain. The proposed approach affords a promising alternative method to prepare periodically-textured TCFEs, which are essential for many optoelectronic device semiconductors, such as photovoltaic and display applications.
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