Carbon-Based CsPbBr3 Perovskite Solar Cells: All-Ambient Processes and High Thermal Stability

Xiaowen Chang; Weiping Li; Liqun Zhu; Huicong Liu; Huifang Geng; Sisi Xiang; Jiaming Liu; Haining Chen

doi:10.1021/acsami.6b11393

Carbon-Based CsPbBr₃ Perovskite Solar Cells: All-Ambient Processes and High Thermal Stability

ACS Appl Mater Interfaces. 2016 Dec 14;8(49):33649-33655. doi: 10.1021/acsami.6b11393. Epub 2016 Dec 1.

Authors

Xiaowen Chang¹, Weiping Li¹, Liqun Zhu¹, Huicong Liu¹, Huifang Geng¹, Sisi Xiang¹, Jiaming Liu¹, Haining Chen¹

Affiliation

¹ School of Materials Science and Engineering, Beihang University , No. 37 Xueyuan Road, Haidian District, Beijing 100191, People's Republic of China.

PMID: 27960426
DOI: 10.1021/acsami.6b11393

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 CsPbBr₃ and the carbon electrode) in the PSCs are conducted in ambient atmosphere. Through a systematical optimization on the fabrication processes of CsPbBr₃ film, 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 CsPbBr₃ C-PSCs, significantly lower than that for popular CH₃NH₃PbI₃ C-PSCs (59.0%) and other reported PSCs, which indicated a promising thermal stability of CsPbBr₃ C-PSCs.

Keywords: CsPbBr3; carbon electrode; hole transport materials-free; perovskite solar cells; thermal stability.