Increased efficiency in multijunction solar cells through the incorporation of semimetallic ErAs nanoparticles into the tunnel junction
Increased efficiency in multijunction solar cells through the incorporation of semimetallic ErAs nanoparticles into the tunnel junction
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通过将半金属 ErAs 纳米粒子纳入隧道结提高多结太阳能电池的效率
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
G. Stucky
中科院分区：
文献类型：
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作者：
J. Zide;A. Kleiman;N. Strandwitz;J. Zimmerman;T. Steenblock;A. Gossard;Arnold J. Forman;Anna N. Ivanovskaya;G. Stucky
我们报告的分子束外延生长的Al0.3Ga0.7As scinGaAs多结太阳能电池与外延，半金属ErAs纳米粒子在隧道结的界面。由这些纳米颗粒提供的状态将使电流通过隧道结所需的偏置降低了三个数量级，因此大大降低了隧道结中的电压损耗。我们已经测量了开路电压，这是97%的组成细胞的总和，这导致我们的多结细胞与传统的隧道结的效率的近一倍。
We report the molecular beam epitaxy growth of Al0.3Ga0.7As∕GaAs multijunction solar cells with epitaxial, semimetallic ErAs nanoparticles at the interface of the tunnel junction. The states provided by these nanoparticles reduce the bias required to pass current through the tunnel junction by three orders of magnitude, and therefore drastically reduce the voltage losses in the tunnel junction. We have measured open-circuit voltages which are 97% of the sum of the constituent cells, which result in nearly double the efficiency of our multijunction cell with a conventional tunnel junction.