The Emitter Having Microcrystalline Surface in Silicon Heterojunction Interdigitated Back Contact Solar Cells
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概要
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In producing the Si heterojunction interdigitated backcontact solar cells, we investigated the feasibility of applying amorphous Si emitter having considerable crystalline Si phase at the facing to transparent conducting oxide (TCO) layer. Prior to evaluating electrical property, we characterized material nature of hydrogenated microcrystalline p-type silicon (μc-p-Si:H) as crystallized fraction, surface morphology, bonding kinds in thin films and then surface passivation quality finally. The diode and interface contact characteristics were induced by the simple test device and then current--voltage (I--V) curve showed more linearity in μc/hydrogenated amorphous silicon (a-Si:H) emitter case. We fabricated heterojunction back contact (HBC) solar cells using p/n interdigitated structure and acquired the 23.4% efficiency in cell size with performance parameters as open-circuit voltage (V_{\text{oc}}) 723 mV, short-circuit current density (J_{\text{sc}}) 41.8 mA/cm2, fill factor (FF) 0.774, in the cell size (at 2\times 2 cm2).
- 2012-10-25
著者
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Lee Heon-Min
Solar Energy Team, Materials and Components R&D Laboratory, LG Electronics Advanced Research Institutes, Seoul 137-724, Korea
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Ji Kwang-sun
Solar Energy Team, Materials and Components R&D Laboratory, LG Electronics Advanced Research Institutes, Seoul 137-724, Korea
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Syn Hojung
Solar Energy Team, Materials and Components R&D Laboratory, LG Electronics Advanced Research Institutes, Seoul 137-724, Korea
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Choi Junghoon
Solar Energy Team, Materials and Components R&D Laboratory, LG Electronics Advanced Research Institutes, Seoul 137-724, Korea
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Kim Donghwan
Meterials Science and Engineering, Korea University, Seoul 136-701, Korea
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Syn Hojung
Solar Energy Team, Materials and Components R&D Laboratory, LG Electronics Advanced Research Institutes, Seoul 137-724, Korea
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Ji Kwang-sun
Solar Energy Team, Materials and Components R&D Laboratory, LG Electronics Advanced Research Institutes, Seoul 137-724, Korea
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Choi Junghoon
Solar Energy Team, Materials and Components R&D Laboratory, LG Electronics Advanced Research Institutes, Seoul 137-724, Korea
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