Preparation of hysteresis-free flexible perovskite solar cells via interfacial modification
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2021年第2期
论文作者：Xiaofang Ye Hongkun Cai Jian Su Jian Ni Juan Li Jianjun Zhang
文章页码：213 - 220
摘 要：In recent years, flexible perovskite solar cells have received extensive attention and rapid development due to their advantages of lightweight, portability, wearability and applications in near-space. However,due to the limitations of their preparation process and other factors, high-efficiency and large-area flexible perovskite solar cells still have a lot of room for development. In our work, a flexible perovskite solar cell（PEN/ITO/Sn O2/KCl/Cs0.05（MA0.17 FA0.83）0.95 Pb（I0.83 Br0.17）3/spiro/Au） was prepared using a low temperature（no higher than 100°C） solution process, and the device with the highest efficiency of 16.16%was obtained by adjusting the concentration of the KCl modified layer. Meanwhile, the efficiency of the large area（1 cm2） flexible solar cell was higher than 13%. At the same time, the passivation of the KCl interface modification layer inhibits the formation of the defect states, which reduced the surface recombination of the perovskite and improved the carrier transport performance, and the hysteresis effect of the device was also reduced accordingly.
Xiaofang Ye1，Hongkun Cai1,2，Jian Su3，Jian Ni4,2，Juan Li4,2，Jianjun Zhang4,2
1. Department of Electronic Science and Technology,College of Electronic Information and Optical Engineering, Nankai University2. Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin3. Jingtao Yang Department of Electronic Science and Technology,College of Electronic Information and Optical Engineering, Nankai University4. Department of Electronic Science and Technology, College of Electronic Information and Optical Engineering, Nankai University
摘 要：In recent years, flexible perovskite solar cells have received extensive attention and rapid development due to their advantages of lightweight, portability, wearability and applications in near-space. However,due to the limitations of their preparation process and other factors, high-efficiency and large-area flexible perovskite solar cells still have a lot of room for development. In our work, a flexible perovskite solar cell（PEN/ITO/Sn O2/KCl/Cs0.05（MA0.17 FA0.83）0.95 Pb（I0.83 Br0.17）3/spiro/Au） was prepared using a low temperature（no higher than 100°C） solution process, and the device with the highest efficiency of 16.16%was obtained by adjusting the concentration of the KCl modified layer. Meanwhile, the efficiency of the large area（1 cm2） flexible solar cell was higher than 13%. At the same time, the passivation of the KCl interface modification layer inhibits the formation of the defect states, which reduced the surface recombination of the perovskite and improved the carrier transport performance, and the hysteresis effect of the device was also reduced accordingly.
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