title: Ultrahigh Carrier Mobility Achieved in Photoresponsive Hybrid Perovskite Films via Coupling with Single-Walled Carbon Nanotubes.
abstract: Organolead trihalide perovskites have drawn substantial interest for photovoltaic and optoelectronic applications due to their remarkable physical properties and low processing cost. However, perovskite thin films suffer from low carrier mobility as a result of their structural imperfections such as grain boundaries and pinholes, limiting their device performance and application potential. Here we demonstrate a simple and straightforward synthetic strategy based on coupling perovskite films with embedded single-walled carbon nanotubes. We are able to significantly enhance the hole and electron mobilities of the perovskite film to record-high values of 595.3 and 108.7 cm2V-1s-1, respectively. Such a synergistic effect can be harnessed to construct ambipolar phototransistors with an ultrahigh detectivity of 3.7 × 1014Jones and a responsivity of 1 × 104A W-1, on a par with the best devices available to date. The perovskite/carbon nanotube hybrids should provide a platform that is highly desirable for fields as diverse as optoelectronics, solar energy conversion, and molecular sensing.
authors.affiliation: Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Feng
authors.initials: F
authors.lastname: Li
authors.affiliation: Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Hong
authors.initials: H
authors.lastname: Wang
authors.affiliation: ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860, Castelldefels, Barcelona, Spain.
authors.forename: Dominik
authors.initials: D
authors.lastname: Kufer
authors.affiliation: Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore.
authors.forename: Liangliang
authors.initials: L
authors.lastname: Liang
authors.affiliation: Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Weili
authors.initials: W
authors.lastname: Yu
authors.affiliation: Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Erkki
authors.initials: E
authors.lastname: Alarousu
authors.affiliation: Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Chun
authors.initials: C
authors.lastname: Ma
authors.affiliation: Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Yangyang
authors.initials: Y
authors.lastname: Li
authors.affiliation: Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Zhixiong
authors.initials: Z
authors.lastname: Liu
authors.affiliation: PRIMALIGHT, Faculty of Electrical Engineering, Applied Mathematics and Computational Science, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Changxu
authors.initials: C
authors.lastname: Liu
authors.affiliation: Core lab, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Nini
authors.initials: N
authors.lastname: Wei
authors.affiliation: Department of Electronic and Electrical Engineering, South University of Science and Technology of China, Shenzhen, 518055, P. R. China.
authors.forename: Fei
authors.initials: F
authors.lastname: Wang
authors.affiliation: Department of Physics, South University of Science and Technology of China, Shenzhen, 518055, P. R. China.
authors.forename: Lang
authors.initials: L
authors.lastname: Chen
authors.affiliation: Solar and Photovoltaics Engineering Research Center, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Omar F
authors.initials: OF
authors.lastname: Mohammed
authors.affiliation: PRIMALIGHT, Faculty of Electrical Engineering, Applied Mathematics and Computational Science, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Andrea
authors.initials: A
authors.lastname: Fratalocchi
authors.affiliation: Department of Chemistry, National University of Singapore, Singapore, 117543, Singapore.
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Liu
authors.affiliation: ICFO-Institut de Ciencies Fotoniques, Mediterranean Technology Park, 08860, Castelldefels, Barcelona, Spain.|ICREA-Institució Catalana de Recerca i Estudis Avançats, Passeig Lluís Companys 23, 08010, Barcelona, Spain.
authors.forename: Gerasimos
authors.initials: G
authors.lastname: Konstantatos
authors.affiliation: Materials Science and Engineering, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia.
authors.forename: Tom
authors.initials: T
authors.lastname: Wu
keywords: carbon nanotubes; mobility; perovskite; photodetectors; phototransistors