Influence of ZnO nano-array interlayer on the charge transfer performance of quantum dot sensitized solar cells
Influence of ZnO nano-array interlayer on the charge transfer performance of quantum dot sensitized solar cells
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ZnO纳米阵列中间层对量子点敏化太阳能电池电荷传输性能的影响
DOI：
10.1016/j.electacta.2018.12.170
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发表时间：
2019-03
影响因子：
6.6
通讯作者：
Chen Jian
中科院分区：
文献类型：
--
作者：
Peng Zhuoyin;Liu Zhou;Chen Jianlin;Ren Yanjie;Li Wei;Li Cong;Chen Jian
采用电化学沉积方法制备了单晶ZnO纳米阵列薄膜，并将其作为FTO导电玻璃衬底和tio2纳米颗粒薄膜之间的中间层，成功地制备了量子点敏化太阳能电池。通过电化学沉积过程的时间对ZnO纳米阵列薄膜的不同结构进行调制，主要研究了太阳能电池的光伏性能和电荷转移特性。紫外-可见吸收光谱和光致发光光谱观察到光电极的光吸收性能和电子-空穴分离性能的增强。电化学阻抗谱和光致发光衰减分析表明，ZnO纳米阵列中间层可以有效地提高量子点敏化太阳能电池体系中的电荷转移速率。通过平衡ZnO纳米阵列间层的直径、密度和厚度，在不优化钝化、电解质和对电极的情况下，FTO/ZnO/TiO2/ cuins2量子点敏化太阳能电池的光伏转换效率从4.12%提高到4.58%。
Single crystalline ZnO nano-array films are prepared by electrochemical deposition process, which are successfully introduced as an interlayer between FTO conductive glass substrate and TiO2nanoparticle films to fabricate the quantum dot sensitized solar cells. Different structure of ZnO nano-array films are modulated by the time of electrochemical deposition process, which have been mainly investigated the photovoltaic performance and charge transfer property of the solar cells. The enhancements of optical absorption properties and electron-hole separation properties on photo-electrodes have been observed by UV–Vis absorption and photoluminescence spectra. And electrochemical impedance spectra and photoluminescence decay analysis have indicated that the ZnO nano-array interlayer can effectively increase the rate of charge transfer in the quantum dot sensitized solar cells system. With the balance on the diameter, density and thickness of the ZnO nano-array interlayer, the photovoltaic conversion efficiency of FTO/ZnO/TiO2/CuInS2quantum dot sensitized solar cells have enhanced from 4.12% to 4.58% without any optimization of passivation, electrolyte and counter electrode.
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