PbSe nanocrystal solar cells using bandgap engineering
PbSe nanocrystal solar cells using bandgap engineering
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DOI：
10.1039/c5ra10715f
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发表时间：
2015-07
期刊：
影响因子：
3.9
通讯作者：
Xiaoyu Zhang;Yu Zhang;Long Yan;Hua Wu;Wenzhu Gao;Jun Zhao;William W. Yu
中科院分区：
文献类型：
--
作者：
Xiaoyu Zhang;Yu Zhang;Long Yan;Hua Wu;Wenzhu Gao;Jun Zhao;William W. Yu
受益于强量子限制，PbSe 纳米晶体可以调节其带隙和吸收边，以优化太阳辐射的吸收。在这里，使用两种尺寸的 PbSe 纳米晶体设计、制造和表征了基于带隙工程的光伏器件。由于增强的光子吸收和改进的电荷传输，所制造的两种尺寸颗粒光伏器件的功率转换效率比单颗粒器件高出 12.8%。
Benefiting from the strong quantum confinement, PbSe nanocrystals allow their bandgap and absorption edge to be tuned to optimize the absorption of the solar radiation. Here, bandgap engineering-based photovoltaic devices were designed, fabricated, and characterized using two-size PbSe nanocrystals. The fabricated two size particle photovoltaic devices showed 12.8% higher power conversion efficiency compared to that of the single-particle devices, as a result of the enhanced photon absorption and the improved charge transfer.