A comparison of ZnS and ZnSe passivation layers on CdS/CdSe co-sensitized quantum dot solar cells
A comparison of ZnS and ZnSe passivation layers on CdS/CdSe co-sensitized quantum dot solar cells
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CdS/CdSe 共敏化量子点太阳能电池上 ZnS 和 ZnSe 钝化层的比较
DOI：
10.1039/c6ta01590e
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发表时间：
2016-01-01
影响因子：
11.9
通讯作者：
Cao, Guozhong
中科院分区：
文献类型：
--
作者：
Huang, Fei;Zhang, Qifeng;Cao, Guozhong
钝化材料的设计和合成对于减少量子点敏化太阳能电池（QDSC）中的表面电荷复合具有重要意义。在这项研究中，ZnS和ZnSe钝化层的光学和电化学性质的系统表征和比较，以及它们对所得到的QDSC的性能的影响进行了研究。ZnS和ZnSe钝化层都是通过可重复和受控的连续离子层吸附和反应方法沉积的。具有ZnSe钝化层的QDSC表现出强烈抑制的界面电荷复合和大大增强的光捕获，导致高达6.4%的功率转换效率，这明显高于具有ZnS钝化层的太阳能电池的4.9%和没有钝化层的太阳能电池的3.4%。
The design and synthesis of passivation materials are of significant importance to reducing surface charge recombination in quantum dot-sensitized solar cells (QDSCs). In this study, the systematic characterization and comparison of the optical and electrochemical properties of ZnS and ZnSe passivation layers and their impacts on the performance of the resulting QDSCs have been investigated. The ZnS and ZnSe passivation layers were all deposited via a reproducible and controlled successive ionic layer adsorption and reaction method. QDSCs with a ZnSe passivation layer demonstrated strongly inhibited interfacial charge recombination and greatly enhanced light harvesting, resulting in a power conversion efficiency of up to 6.4%, which is appreciably higher than 4.9% for the solar cells with a ZnS passivation layer and 3.4% for the solar cells without a passivation layer.