Journal
SOLAR ENERGY
Volume 89, Issue -, Pages 17-22Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2012.12.012
Keywords
Conversion efficiency; Hybrid electrode structure; III-V Compound triple-junction solar cell; Transparent conduction film
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Funding
- Bureau of Energy, Ministry of Economic Affairs [101-D0204-2]
- National Science Council of Taiwan, Republic of China [NSC-100-3113-E-005-003-CC2]
- Energy Technology and Strategy Center
- Advanced Optoelectronic Technology Center of the National Cheng Kung University
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To improve the conversion efficiency of InGaP/InGaAs/Ge compound triple-junction solar cells, the hybrid electrode structure consisting of the metal contact pads and the transparent indium tin-oxide (ITO) film was designed. The metal contact pad was used to form good ohmic contact. The current extraction capability of the resulting solar cells was enhanced by reducing the interval of the metal contact pads. In addition, transparent ITO films were used to replace the conventional bus-bar metal electrodes to avoid shadow loss. To study the improvement mechanisms of the conversion efficiency, the designed electrodes with various intervals among the metal contact pads were fabricated on solar cells, and the performances were evaluated for comparison. (C) 2013 Elsevier Ltd. All rights reserved.
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