Organic-inorganic perovskite light-emitting electrochemical cells with a large capacitance
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- 英文论文题名：Organic-inorganic perovskite light-emitting electrochemical cells with a large capacitance
- 论文作者：Huimin Zhang ; Chunjun Liang ; Zhiqun He
- 英文论文作者：Huimin Zhang ; Chunjun Liang ; Zhiqun He ; Key Laboratory of Luminescence and Optical Information ; Ministry of Education ; Institute of Optoelectronics ; Beijing Jiaotong University
- 年：2017
- 作者机构：Key Laboratory of Luminescence and Optical Information, Ministry of Education,Institute of Optoelectronics, Beijing Jiaotong University;
- 论文关键词：钙钛矿发光电化学池 ; 界面电荷
- 会议召开时间：2017-05-27
- 会议录名称：第四届新型太阳能电池学术研讨会论文集
- 英文会议录名称：Abstract Book of the 4th Conference on New Generation Solar Cells
- 语种：英文
- 分类号：TM910
- 学会代码：ZKYQ
- 会议名称：第四届新型太阳能电池学术研讨会
- 会议地点：中国北京
- 主办单位：中国可再生能源学会光化学专业委员会
- 学会名称：中国科学院物理研究所清洁能源实验室
- 页数：1
- 文件大小：519k
- 原文格式：D
- 会议级别：全国
摘要
While perovskite light-emitting diodes typically made from high work function anode and low work function cathode have recently gained intense interests, we demonstrate perovskite light-emitting devices from two high work function electrodes with interesting features.Firstly, electroluminescence can be easily obtained from both forward and reverse biases.Secondly, the results of impedance spectroscopy indicate that the ionic conductivity in the iodide perovskite(CH_3NH_3PbI_3) is large with a value of ~10~(-8)Scm~(-1).Thirdly, the shift of the emission spectrum in the mixed halide perovskite(CH_3NH_3PbI_(3-x)Br_x) lightemitting devices indicates that I-ions are mobile in the perovskites.Fourthly, our work shows that the accumulated ions at the interfaces results in a large capacitance(~100 μFcm~(-2)).The above results conclusively prove that the organic–inorganic halide perovskites are solid electrolytes with mixed ionic and electronic conductivity and the light-emitting device is a light-emitting electrochemical cells.The work also suggests that the organic-inorganic halide perovskites are potential energy-storage materials, which may be applicable in the field of solid-state super capacitors and batteries.[1] [2]
While perovskite light-emitting diodes typically made from high work function anode and low work function cathode have recently gained intense interests, we demonstrate perovskite light-emitting devices from two high work function electrodes with interesting features.Firstly, electroluminescence can be easily obtained from both forward and reverse biases.Secondly, the results of impedance spectroscopy indicate that the ionic conductivity in the iodide perovskite(CH_3NH_3PbI_3) is large with a value of ~10~(-8)Scm~(-1).Thirdly, the shift of the emission spectrum in the mixed halide perovskite(CH_3NH_3PbI_(3-x)Br_x) lightemitting devices indicates that I-ions are mobile in the perovskites.Fourthly, our work shows that the accumulated ions at the interfaces results in a large capacitance(~100 μFcm~(-2)).The above results conclusively prove that the organic–inorganic halide perovskites are solid electrolytes with mixed ionic and electronic conductivity and the light-emitting device is a light-emitting electrochemical cells.The work also suggests that the organic-inorganic halide perovskites are potential energy-storage materials, which may be applicable in the field of solid-state super capacitors and batteries.[1] [2]
While perovskite light-emitting diodes typically made from high work function anode and low work function cathode have recently gained intense interests, we demonstrate perovskite light-emitting devices from two high work function electrodes with interesting features.Firstly, electroluminescence can be easily obtained from both forward and reverse biases.Secondly, the results of impedance spectroscopy indicate that the ionic conductivity in the iodide perovskite(CH_3NH_3PbI_3) is large with a value of ~10~(-8)Scm~(-1).Thirdly, the shift of the emission spectrum in the mixed halide perovskite(CH_3NH_3PbI_(3-x)Br_x) lightemitting devices indicates that I-ions are mobile in the perovskites.Fourthly, our work shows that the accumulated ions at the interfaces results in a large capacitance(~100 μFcm~(-2)).The above results conclusively prove that the organic–inorganic halide perovskites are solid electrolytes with mixed ionic and electronic conductivity and the light-emitting device is a light-emitting electrochemical cells.The work also suggests that the organic-inorganic halide perovskites are potential energy-storage materials, which may be applicable in the field of solid-state super capacitors and batteries.[1] [2]
引文
[1]Y.Zhao,C.Liang,H.Zhang,et.al,“Anomalously large interface charge in polarity switchable photovoltaic devices:an indication of mobile ions in organic–inorganic halide perovskites”Energy&Environmental Science,8(4):1256-1260(2015).
[2]H.Zhang,H.Lin,C.Liang,et.al,“Organic–Inorganic Perovskite Light-Emitting Electrochemical Cells with a Large Capacitance”Advanced Functional Materials,25:7226–7232(2015).
[2]H.Zhang,H.Lin,C.Liang,et.al,“Organic–Inorganic Perovskite Light-Emitting Electrochemical Cells with a Large Capacitance”Advanced Functional Materials,25:7226–7232(2015).