title: Carbon-Based CsPbBr3Perovskite Solar Cells: All-Ambient Processes and High Thermal Stability.
abstract: The device instability has been an important issue for hybrid organic-inorganic halide perovskite solar cells (PSCs). This work intends to address this issue by exploiting inorganic perovskite (CsPbBr3) as light absorber, accompanied by replacing organic hole transport materials (HTM) and the metal electrode with a carbon electrode. All the fabrication processes (including those for CsPbBr3and the carbon electrode) in the PSCs are conducted in ambient atmosphere. Through a systematical optimization on the fabrication processes of CsPbBr3film, carbon-based PSCs (C-PSCs) obtained the highest power conversion efficiency (PCE) of about 5.0%, a relatively high value for inorganic perovskite-based PSCs. More importantly, after storage for 250 h at 80 °C, only 11.7% loss in PCE is observed for CsPbBr3C-PSCs, significantly lower than that for popular CH3NH3PbI3C-PSCs (59.0%) and other reported PSCs, which indicated a promising thermal stability of CsPbBr3C-PSCs.
authors.affiliation: School of Materials Science and Engineering, Beihang University , No. 37 Xueyuan Road, Haidian District, Beijing 100191, People's Republic of China.
authors.forename: Xiaowen
authors.initials: X
authors.lastname: Chang
authors.affiliation: School of Materials Science and Engineering, Beihang University , No. 37 Xueyuan Road, Haidian District, Beijing 100191, People's Republic of China.
authors.forename: Weiping
authors.initials: W
authors.lastname: Li
authors.affiliation: School of Materials Science and Engineering, Beihang University , No. 37 Xueyuan Road, Haidian District, Beijing 100191, People's Republic of China.
authors.forename: Liqun
authors.initials: L
authors.lastname: Zhu
authors.affiliation: School of Materials Science and Engineering, Beihang University , No. 37 Xueyuan Road, Haidian District, Beijing 100191, People's Republic of China.
authors.forename: Huicong
authors.initials: H
authors.lastname: Liu
authors.affiliation: School of Materials Science and Engineering, Beihang University , No. 37 Xueyuan Road, Haidian District, Beijing 100191, People's Republic of China.
authors.forename: Huifang
authors.initials: H
authors.lastname: Geng
authors.affiliation: School of Materials Science and Engineering, Beihang University , No. 37 Xueyuan Road, Haidian District, Beijing 100191, People's Republic of China.
authors.forename: Sisi
authors.initials: S
authors.lastname: Xiang
authors.affiliation: School of Materials Science and Engineering, Beihang University , No. 37 Xueyuan Road, Haidian District, Beijing 100191, People's Republic of China.
authors.forename: Jiaming
authors.initials: J
authors.lastname: Liu
authors.affiliation: School of Materials Science and Engineering, Beihang University , No. 37 Xueyuan Road, Haidian District, Beijing 100191, People's Republic of China.
authors.forename: Haining
authors.initials: H
authors.lastname: Chen
keywords: CsPbBr3; carbon electrode; hole transport materials-free; perovskite solar cells; thermal stability