Efficiency Analysis of III–V Axial and Core–Shell Nanowire Solar Cells
Efficiency Analysis of III–V Axial and Core–Shell Nanowire Solar Cells
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DOI：
10.1166/jctn.2012.2080
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发表时间：
2012-05
影响因子：
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通讯作者：
Shuqing Yu;J. Kupec;B. Witzigmann
中科院分区：
文献类型：
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作者：
Shuqing Yu;J. Kupec;B. Witzigmann
在这里，我们提出了轴向和核壳纳米线阵列太阳能电池的效率分析。对两种类型的器件进行了微观三维电光模拟，发现核壳纳米线比轴向纳米线提供更高的光电流和更低的开路电压。在对器件内部载流子收集机制进行微观三维计算的基础上，我们推导出了由有源区概念修正的Shockley方程。然后应用这个简化模型系统地研究了效率与纳米线几何形状之间的关系。
Here we present an efficiency analysis of axial and core–shell nanowire array solar cells. A microscopic three-dimensional (3D) electro-optical simulation is applied to both device types, and it is found that the core–shell nanowire provides higher photocurrent and lower open circuit voltage than the axial nanowire. Based on the microscopic 3D calculation of the carrier collection mechanism inside the devices, we derive a Shockley equation modified by the active region concept. This simplified model is then applied to systematically study the relationship between efficiency and nanowire geometry.