Improving Performance of Polymer Solar Cells by Regulating PbSe Quantum Dots

被引：0
作者：
Zhang L. [1 ]
Sun Q. [1 ]
Zhu Y.-Y. [1 ]
Wang L. [1 ]
Xie Q. [1 ]
Wang L.-J. [1 ]
机构：
[1] School of Chemical Engineering, Changchun University of Technology, Changchun
来源：
Faguang Xuebao/Chinese Journal of Luminescence | 2019年 / 40卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Active layer; Doping; PbSe quantum dots; Polymer solar cells;
D O I：
10.3788/fgxb20194010.1267
中图分类号：
学科分类号：
摘要：
In order to improve the photoelectric conversion efficiency of polymer solar cells, PbSe quantum dots were doped in the active layer and the effect of the material on the cells was studied. Firstly, PbSe quantum dots were prepared by thermochemical method. The size and crystallinity of PbSe quantum dots were controlled by changing the amount of oleic acid and reaction time. Quantum dots were characterized by transmission electron microscopy (TEM) and X-ray diffraction (XRD), and the optimum reaction conditions were determined. Then PbSe quantum dots with different mass fractions were doped into polymer solar cells with structure of ITO/ZnO/PTB7:PC71BM/MoO3/Ag. Through J-V performance test and ultraviolet absorption spectrum test, the influence mechanism of PbSe quantum dots on solar cells was analyzed. The experimental results show that when the molar ratio of PbO to OA is 1:2 and the reaction time is 3 min, the quantum dots with uniform size distribution between 3 and 7 nm and good crystallinity can be obtained. The short circuit current density and photoelectric conversion efficiency can be increased by 8.37% and 37.41% by doping 3% into polymer solar cells and the performance of polymer solar cells has been improved effectively. © 2019, Science Press. All right reserved.
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页码：1267 / 1273
页数：6
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