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A discussion on the origin and solutions of hysteresis in perovskite hybrid solar cells
- A discussion on the origin and solutions of hysteresis in perovskite hybrid solar cells
- Song, Dae Ho; Jang, Min Hyeok; Lee, Min Ho; Heo, Jin Hyuck; Park, Jin Kyoung; Sung, Shi-Joon; Kim, Dae-Hwan; Hong, Ki-Ha; Im, Sang Hyuk
- DGIST Authors
- Sung, Shi-Joon; Kim, Dae-Hwan
- Issue Date
- Journal of Physics D-Applied Physics, 49(47)
- Article Type
- CH3NH3Pbi3; Crystallization; Diffusion; Exciton; Ferroelectricity; Films; Flux Balancing; Hysteresis; Ionic Motion; Lengths; Organometal Halide Perovskites; Perovskite; Phase Transitions; Power Conversion Efficiency; Single Crystals; Solar Cells
- Although the record efficiencies of perovskite hybrid solar cells are gradually reaching the efficiency of crystalline Si solar cells, perovskite hybrid solar cells often exhibit significant current density-voltage (J-V) hysteresis with respect to the forward and reverse scan direction and scan rate. The origin of the J-V hysteresis of perovskite hybrid solar cells has not, to date, been clearly elucidated. Dielectric polarization by the ferroelectric properties of perovskite (i), the ionic motion/migration of perovskite materials (ii), and charge trapping and detrapping at trap sites by the unbalanced electron and hole flux (iii) are considered the possible origins of J-V hysteresis. Here, we reviewed the origin of the J-V hysteresis of perovskite solar cells from the above three points of view and we then suggest how one may reduce the J-V hysteresis with respect to the scan direction and scan rate.
- IOP PUBLISHING LTD
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- Convergence Research Center for Solar Energy1. Journal Articles
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