TY - DATA T1 - Reversible Structural Swell–Shrink and Recoverable Optical Properties in Hybrid Inorganic–Organic Perovskite PY - 2016/07/07 AU - Yupeng Zhang AU - Yusheng Wang AU - Zai-Quan Xu AU - Jingying Liu AU - Jingchao Song AU - Yunzhou Xue AU - Ziyu Wang AU - Jialu Zheng AU - Liangcong Jiang AU - Changxi Zheng AU - Fuzhi Huang AU - Baoquan Sun AU - Yi-Bing Cheng AU - Qiaoliang Bao UR - https://acs.figshare.com/articles/journal_contribution/Reversible_Structural_Swell_Shrink_and_Recoverable_Optical_Properties_in_Hybrid_Inorganic_Organic_Perovskite/3487283 DO - 10.1021/acsnano.6b03104.s001 L4 - https://ndownloader.figshare.com/files/5512889 KW - switchable photovoltaic effect KW - perovskite KW - ion migration quantity KW - ion migration KW - Recoverable Optical Properties KW - MA KW - photoelectric conversion process KW - giant dielectric response N2 - Ion migration in hybrid organic–inorganic perovskites has been suggested to be an important factor for many unusual behaviors in perovskite-based optoelectronics, such as current–voltage hysteresis, low-frequency giant dielectric response, and the switchable photovoltaic effect. However, the role played by ion migration in the photoelectric conversion process of perovskites is still unclear. In this work, we provide microscale insights into the influence of ion migration on the microstructure, stability, and light–matter interaction in perovskite micro/nanowires by using spatially resolved optical characterization techniques. We observed that ion migration, especially the migration of MA+ ions, will induce a reversible structural swell–shrink in perovskites and recoverably affect the reflective index, quantum efficiency, light-harvesting, and photoelectric properties. The maximum ion migration quantity in perovskites was as high as approximately 30%, resulting in lattice swell or shrink of approximately 4.4%. Meanwhile, the evidence shows that ion migration in perovskites could gradually accelerate the aging of perovskites because of lattice distortion in the reversible structural swell–shrink process. Knowledge regarding reversible structural swell–shrink and recoverable optical properties may shed light on the development of optoelectronic and converse piezoelectric devices based on perovskites. ER -