Hydrogenated Nanocrystalline Silicon based Solar Cell with 13.6% Stable Efficiency
Hydrogenated Nanocrystalline Silicon based Solar Cell with 13.6% Stable Efficiency
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氢化%20纳米晶%20硅%20基%20太阳能%20电池%20with%2013.6%%20稳定%20效率
DOI：
10.1557/opl.2012.834
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
S. Guha
中科院分区：
文献类型：
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作者：
G. Yue;B. Yan;L. Sivec;T. Su;Yan Zhou;Jeffrey C. Yang;S. Guha
采用氢化纳米晶硅（nc-Si：H）的多结太阳能电池表现出高电流容量和低光致退化。在本文中，我们报告了我们最近的进展，在发展nc-Si：H太阳电池使用改进的甚高频辉光放电技术。我们获得了短路电流密度>30 mA/cm 2和10.6%的转换效率从单结太阳能电池。在a-Si：H/nc-Si：H/nc-Si：H三结结构中使用改进的nc-Si：H电池，我们分别获得了13.9%和13.6%的初始和稳定效率。与改善材料性能和器件结构的问题得到解决。除了使用传统的技术，如氢稀释剖面，优化的Ag/ZnO背反射器，和缓冲层，我们发现，从硼和氧微掺杂的补偿也是获得上述成就的关键。
Multi-junction solar cells incorporating hydrogenated nanocrystalline silicon (nc-Si:H) exhibit a high current capability and low light-induced degradation. In this paper, we report our recent progress in developing nc-Si:H solar cells using a modified very-high-frequency glow discharge technique. We achieved a short-circuit current density >30 mA/cm 2 and 10.6% conversion efficiency from single-junction solar cells. Using the improved nc-Si:H cells in an a-Si:H/nc-Si:H/nc-Si:H triple-junction structure, we attained initial and stabilized efficiencies of 13.9% and 13.6%, respectively. Issues related to improving material properties and device structures are addressed. Besides using the conventional techniques, such as hydrogen dilution profiling, optimized Ag/ZnO back reflector, and buffer layers, we found that compensation from Boron and Oxygen micro-doping is also critical in obtaining the above achievements.