title: Organic-Inorganic Copper(II)-Based Material: A Low-Toxic, Highly Stable Light Absorber for Photovoltaic Application.
abstract: Lead halide perovskite solar cells have recently emerged as a very promising photovoltaic technology due to their excellent power conversion efficiencies; however, the toxicity of lead and the poor stability of perovskite materials remain two main challenges that need to be addressed. Here, for the first time, we report a lead-free, highly stable C6H4NH2CuBr2I compound. The C6H4NH2CuBr2I films exhibit extraordinary hydrophobic behavior with a contact angle of ∼90°, and their X-ray diffraction patterns remain unchanged even after 4 h of water immersion. UV/vis absorption spectrum shows that C6H4NH2CuBr2I compound has an excellent optical absorption over the entire visible spectrum. We applied this copper-based light absorber in printable mesoscopic solar cell for the initial trial and achieved a power conversion efficiency of ∼0.5%. Our study represents an alternative pathway to develop low-toxic and highly stable organic-inorganic hybrid materials for photovoltaic application.
authors.affiliation: Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, School of Materials Science and Engineering, Xiangtan University , Xiangtan 411105, People's Republic of China.|Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China.
authors.forename: Xiaolei
authors.identifier: http://orcid.org/0000-0003-4913-0028
authors.initials: X
authors.lastname: Li
authors.affiliation: Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, School of Materials Science and Engineering, Xiangtan University , Xiangtan 411105, People's Republic of China.
authors.forename: Xiangli
authors.initials: X
authors.lastname: Zhong
authors.affiliation: Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China.
authors.forename: Yue
authors.initials: Y
authors.lastname: Hu
authors.affiliation: Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, School of Materials Science and Engineering, Xiangtan University , Xiangtan 411105, People's Republic of China.
authors.forename: Bochao
authors.initials: B
authors.lastname: Li
authors.affiliation: Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China.
authors.forename: Yusong
authors.initials: Y
authors.lastname: Sheng
authors.affiliation: Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, School of Materials Science and Engineering, Xiangtan University , Xiangtan 411105, People's Republic of China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Zhang
authors.affiliation: College of Chemistry, Xiangtan University , Xiangtan 411105, People's Republic of China.
authors.forename: Chao
authors.initials: C
authors.lastname: Weng
authors.affiliation: Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University , Changchun 130103, People's Republic of China.
authors.forename: Ming
authors.initials: M
authors.lastname: Feng
authors.affiliation: Michael Grätzel Center for Mesoscopic Solar Cells, Wuhan National Laboratory for Optoelectronics, Huazhong University of Science and Technology , Wuhan 430074, People's Republic of China.
authors.forename: Hongwei
authors.initials: H
authors.lastname: Han
authors.affiliation: Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education, School of Materials Science and Engineering, Xiangtan University , Xiangtan 411105, People's Republic of China.
authors.forename: Jinbin
authors.identifier: http://orcid.org/0000-0001-5192-7648
authors.initials: J
authors.lastname: Wang