Details

Autor(en) / Beteiligte

• Yu, Bingcheng
• Zhang, Huiyin
• Wu, Jionghua
• Li, Yusheng
• Li, Hongshi
• Li, Yiming
• Shi, Jiangjian
• Wu, Huijue
• Li, Dongmei
• Luo, Yanhong
• Meng, Qingbo

Titel

Solvent-engineering toward CsPb(IxBr1−x)3 films for high-performance inorganic perovskite solar cellsElectronic supplementary information (ESI) available. See DOI: 10.1039/c8ta07968d

Erscheinungsjahr

2018-10

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• All-inorganic perovskites have aroused great interest recently because of their prominent photoelectric properties and thermal stability for stable, highly efficient perovskite solar cells. Herein, a two-step multiple spin coating method has been developed for the first time to prepare cesium halide perovskite films. In particular, dimethyl sulfoxide (DMSO) is introduced into CsBr/methanol precursor solution to increase the solubility of CsBr; in the meantime, it can also remarkably influence the morphologies, optical properties and photovoltaic performance of CsPb(I x Br 1− x ) 3 (0 < x < 1) films. By regulating the content of DMSO, as high as 13.27% power conversion efficiency (PCE) has been achieved with a steady-state PCE of 12.5% under optimal conditions, which can maintain 98% of the initial PCE for 480 h under ambient conditions without encapsulation. The synergistic effect of the solvent-engineering method can provide a new access for good quality all-inorganic perovskite thin films for high performance optoelectronic devices. 13.27% conversion efficiency of CsPb(I x Br 1− x ) 3 perovskite solar cells has been achieved by using dimethyl sulfoxide as an additive.