Material structure and metastability of hydrogenated nanocrystalline silicon solar cells
Material structure and metastability of hydrogenated nanocrystalline silicon solar cells
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DOI：
10.1063/1.2216022
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发表时间：
2006-06
影响因子：
4
通讯作者：
G. Yue;B. Yan;G. Ganguly;Jeffrey Yang;S. Guha;C. Teplin
中科院分区：
文献类型：
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作者：
G. Yue;B. Yan;G. Ganguly;Jeffrey Yang;S. Guha;C. Teplin
我们发现氢化纳米晶硅本征层中非晶成分的体积分数不一定是n-i-p太阳能电池光致亚稳态的决定因素。小晶粒和/或中间范围有序可能在提高稳定性方面发挥重要作用。纳米微晶沿生长方向的分布也很重要。基于这些发现，我们优化了氢稀释分析以控制结构演化，并减少了太阳能电池的光诱导退化。结果，我们使用 ana-Si:H/nc-Si:H/nc-Si:H 三结结构分别实现了 14.1% 和 13.2% 的初始和稳定有源面积效率。
We find that the volume fraction of amorphous component in hydrogenated nanocrystalline silicon intrinsic layers is not necessarily the determining factor for the light-induced metastability ofn-i-p solar cells. Small grains and/or intermediate range order may play an important role in improving the stability. The distribution of nanocrystallites along the growth direction is also important. Based on the findings, we have optimized the hydrogen dilution profiling for controlling the structural evolution and have reduced the light-induced degradation of solar cells. As a result, we have achieved initial and stable active-area efficiencies of 14.1% and 13.2%, respectively, using ana-Si:H/nc-Si:H/nc-Si:H triple-junction structure.