Development of highly-efficient GaInP/Si Tandem Solar Cells
Development of highly-efficient GaInP/Si Tandem Solar Cells
复制标题
高效GaInP/Si串联太阳能电池的开发
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
D. Young
中科院分区：
文献类型：
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作者：
S. Essig;J. Geisz;M. Steiner;A. Merkle;R. Peibst;Jan Schmidt;R. Brendel;S. Ward;D. Friedman;P. Stradins;D. Young
制备了由背面异质结GaInP顶层电池和背结、背接触晶硅底层电池组成的双结太阳电池，并对其进行了表征。我们的计算表明，硅基串联器件的理论效率可达38.9%。在我们的实验中，这两个子电池是单独制造的，并堆叠在折射率匹配流体中。与在界面处包含两个金属栅格的传统机械堆叠式太阳能电池不同，我们的概念包括一个完全背部接触的底部电池，它减少了设备中的阴影损失。用这种新型的GaInP/Si4端级联太阳电池获得了(26.2±0.6)%的1SUN AM1.5G的累积效率。
Dual-junction solar cells consisting of rear-heterojunction GaInP top cells and back-junction, back-contacted crystalline Si bottom cells were fabricated and characterized. Our calculations show that theoretical efficiencies up to 38.9% can be achieved with Si-based tandem devices. In our experiments, the two subcells were fabricated separately and stacked with an index matching fluid. In contrast to conventional mechanically stacked solar cells, that contain two metal grids at the interface, our concept includes a fully back contacted bottom cell which reduces the shadow losses in the device. A 1-sun AM1.5g cumulative efficiency of (26.2 ± 0.6)% has been achieved with this novel GaInP/Si 4-terminal tandem solar cell.