Optimization of CIGSe bottom cell for spectral splitting device application
Optimization of CIGSe bottom cell for spectral splitting device application
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用于光谱分裂装置应用的 CIGSe 底部电池优化
DOI：
10.1002/pssc.201400308
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
T. Nakada
中科院分区：
文献类型：
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作者：
Z. Jehl;H. Fukai;I. Matsuyama;T. Nakada
本文研究了窄带隙CIGSe太阳电池在光谱分离器件中的串联应用。使用SCAPS进行数值模拟，以优化整个吸收层的Ga含量，这取决于照明条件（AM 1.5和串联条件，使用两个不同的分裂过滤器; 620 nm和880 nm）。模拟结果表明，吸收体的最小带隙上的效率有很强的依赖性，但不是对窄带隙区域的深度。实验实现了窄带隙CIGSe太阳能电池，并对其进行了电学表征。当太阳能电池在串联条件下表征时，在实验上观察到与从模拟中推导出的趋势类似的趋势。对于880 nm的分裂过滤器，5.5%的效率是实验获得的最小带隙为1.05 eV。（© 2015 WILEY-VCH Verlag GmbH & Co. KGaA，魏因海姆）
We investigate on narrow bandgap CIGSe solar cells for tandem application in a spectral splitting devices. Numerical simulations using SCAPS are performed to optimize the Ga content throughout the absorber layer, depending on the illumination condition (AM 1.5 and tandem conditions using two different splitting filters; 620 nm and 880 nm). The simulations show a strong dependence of the efficiency on the minimum bandgap of the absorber, but not on the depth of the narrow bandgap region. Narrow bandgap CIGSe solar cells are experimentally realized and electrically characterized. A similar trend as what was deduced from the simulation is observed on the experiments when the solar cells are characterized in the tandem conditions. For the 880 nm splitting filter, an efficiency of 5.5% is experimentally obtained with a minimum bandgap of 1.05 eV. (© 2015 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)