PEG掺杂对钙钛矿太阳能电池的影响

发布时间：2018-06-19 22:29

本文选题：钙钛矿 + 掺杂　；参考：《发光学报》2017年04期

【摘要】：为了提高钙钛矿太阳能电池的能量转化效率,减小回滞现象,研究了聚乙二醇(PEG)掺杂钙钛矿太阳能电池阳极修饰层PEDOT∶PSS对器件性能的影响。通过电容-电压(C-V)测试分析了PEDOT∶PSS修饰层和钙钛矿层之间的界面电荷积累情况,通过电流密度-时间(J-T)瞬态光电流的测量研究了修饰层和钙钛矿层之间缺陷态情况。结果表明,PEG掺杂阳极修饰层提高了器件的短路电流(J_(sc))、开路电压(V_(oc))和填充因子(FF),光电转化效率从7.5%提高到10.0%,光电转化效率提高了33%,经过掺杂后的器件回滞现象明显减弱。这种通过PEG掺杂PEDOT∶PSS的方法能够减少器件界面处的电荷积累和缺陷态,从而减小器件的回滞现象,提高器件的能量转化效率。
[Abstract]:In order to improve the energy conversion efficiency and reduce hysteresis of perovskite solar cells, the effect of PEG-PEG- doped perovskite solar cell anode modified layer PEDOT: PSS on the device performance was studied. The interfacial charge accumulation between PEDOT: PSS modified layer and perovskite layer was analyzed by means of capacitance-voltage C-V test. The defect state between the modified layer and perovskite layer was studied by measuring the transient photocurrent between the modified layer and the perovskite layer. The results show that the short circuit current, open circuit voltage and filling factor of PEG-doped anode modified layer are increased from 7.5% to 10.0%, the photoelectric conversion efficiency is increased from 7.5% to 10.0, the photoelectric conversion efficiency is increased by 33%, and the hysteresis of the doped device is obviously weakened. The PEDOT: PSS doped with PEG can reduce the charge accumulation and defect state at the interface of the device, thus reduce the hysteresis of the device and improve the energy conversion efficiency of the device.
【作者单位】：北京交通大学光电子技术研究所发光与光信息技术教育部重点实验室;
【基金】：中央高校基本科研业务费专项资金(2014JBZ009) 国家科学自然基金(61274063,61377028,61475014,61475017)资助项目~~
【分类号】：TM914.4

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