Solution-processed inorganic bulk nano-heterojunctions and their application to solar cells
Solution-processed inorganic bulk nano-heterojunctions and their application to solar cells
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DOI：
10.1038/nphoton.2012.139
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发表时间：
2012-08-01
期刊：
影响因子：
35
通讯作者：
Konstantatos, Gerasimos
中科院分区：
文献类型：
--
作者：
Rath, Arup K.;Bernechea, Maria;Konstantatos, Gerasimos
在过去的十年中，溶液处理的量子点/量子点太阳能电池由于其低成本和高能量利用潜力而成为第三代薄膜光电池的非常有前途的技术。迄今为止开发的量子点太阳能电池架构依赖于胶体量子点的块状薄膜的使用。在这里，我们介绍了无机溶液处理半导体的体纳米异质结的概念。该平台可以通过在溶液中混合不同的半导体纳米晶体来容易地实现，并且允许开发具有定制光电特性的光电纳米复合材料。我们提出了基于n型Bi 2S 3纳米晶体和p型PbS量子点的体纳米异质结太阳能电池，与其双层类似物相比，其器件性能提高了三倍以上，这是抑制复合的结果。
In the last decade, solution-processed quantum dot/nanocrystal solar cells have emerged as a very promising technology for third-generation thin-film photovoltaics because of their low cost and high energy-harnessing potential. Quantum dot solar cell architectures developed to date have relied on the use of bulk-like thin films of colloidal quantum dots. Here, we introduce the bulk nano-heterojunction concept for inorganic solution-processed semiconductors. This platform can be readily implemented by mixing different semiconductor nanocrystals in solution and allows for the development of optoelectronic nanocomposite materials with tailored optoelectronic properties. We present bulk nano-heterojunction solar cells based on n-type Bi2S3 nanocrystals and p-type PbS quantum dots, which demonstrate a more than a threefold improvement in device performance compared to their bilayer analogue, as a result of suppressed recombination.