Numerical optical optimization of monolithic planar perovskite-silicon tandem solar cells with regular and inverted device architectures
Numerical optical optimization of monolithic planar perovskite-silicon tandem solar cells with regular and inverted device architectures
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DOI：
10.1364/oe.25.00a473
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发表时间：
2017-06-12
期刊：
影响因子：
3.8
通讯作者：
Albrecht, Steve
中科院分区：
文献类型：
--
作者：
Jaeger, Klaus;Korte, Lars;Albrecht, Steve
对于不同的器件结构，我们数值地最大化了平面钙钛矿硅串联太阳电池的可实现的光电流密度。在优化过程中，我们将传递矩阵法与模拟退火法相结合。优化是在实验可及的相关层厚度范围内进行的，这允许提取适用的器件指南。比较了常规和倒置串联电池的设计，发现后发射极硅异质结与倒置钙钛矿型顶部电池相结合可以产生比通常极性的串联电池和前射极硅底部电池高1.4 mA/cm(2)的光电流。从规则结构到逆结构的转换使功率转换效率提高了2%(绝对)以上。结果表明，采用优化的钙钛矿型带隙结构，串联电池的效率可达30.8%。(C)2017年美国光学学会
We numerically maximize the achievable photocurrent density of planar perovskite-silicon tandem solar cells for different device architectures. For the optimizations we combine the transfer-matrix method with a simulated annealing algorithm. The optimizations are conducted within experimentally accessible and relevant layer-thickness ranges, which allows to extract applicable device guidelines. A comparison between regular and inverted tandem-cell designs reveals that a rear-emitter silicon heterojunction in combination with an inverted perovskite top-cell can yield a photocurrent, which is 1.4 mA/cm(2) higher than that of tandem cells with the usual polarity and a front-emitter silicon bottom cell. Switching from the regular to the inverse architecture leads to over 2% (absolute) gain in power conversion efficiency. Finally we show that an efficiency of 30.8% is achievable for such tandem cells with an optimized perovskite band-gap. (C) 2017 Optical Society of America