title: Constructing Mie-Scattering Porous Interface-Fused Perovskite Films to Synergistically Boost Light Harvesting and Carrier Transport.
abstract: Light harvesting (LH) and carrier transport abilities of a photoactive layer, which are both crucial for optoelectronic devices such as solar cells and photodetectors (PDs), are typically hard to be synergistically improved. Taking perovskite as an example, a freeze-drying recrystallization method is used to construct porous films with improvements of both LH and carrier transport ability. During the freeze-drying casting process, the rapid solvent evaporation produces massive pores, the sizes of which can be adjusted to exploit the Mie scattering for enhancement of the LH ability. Meanwhile, owing to the strong iconicity, the interface between perovskite nanocrystals fused during recrystallization, which favors carrier transport. Subsequently, PDs based on these Mie porous and interface-fused films show a high on/off ratio of more than 104and an external quantum efficiency value of 658 % under 9 V bias and 520 nm light irradiation.
authors.affiliation: Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
authors.forename: Jie
authors.initials: J
authors.lastname: Xue
authors.affiliation: Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Gu
authors.affiliation: Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
authors.forename: Qingsong
authors.initials: Q
authors.lastname: Shan
authors.affiliation: Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
authors.forename: Yousheng
authors.initials: Y
authors.lastname: Zou
authors.affiliation: Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
authors.forename: Jizhong
authors.initials: J
authors.lastname: Song
authors.affiliation: Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
authors.forename: Leimeng
authors.initials: L
authors.lastname: Xu
authors.affiliation: Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
authors.forename: Yuhui
authors.initials: Y
authors.lastname: Dong
authors.affiliation: Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
authors.forename: Jianhai
authors.initials: J
authors.lastname: Li
authors.affiliation: Institute of Optoelectronics & Nanomaterials, MIIT Key Laboratory of Advanced Display Materials and Devices, College of Materials Science and Engineering, Nanjing University of Science and Technology, Nanjing, 210094, China.
authors.forename: Haibo
authors.initials: H
authors.lastname: Zeng
keywords: Mie scattering; freeze-drying casting; perovskites; porous films; recrystallization