Novel (CH<sub>3</sub>NH<sub>3</sub>)<sub>3</sub>Bi<sub>2</sub>I<sub>9</sub> perovskite solar cells processed by <i>in-situ</i> gas–solid reaction
Abstract (CH 3 NH 3 ) 3 Bi 2 I 9 thin films were synthesized via direct metal surface element reaction using bismuth thin films as precursors, which are simple to operate at low energy consumption, without organic solvent added to the reaction process. The film prepared at 220 °C for 3 h not only exhibits better crystallinity and compactness but also remains stable when exposed to air for more than 100 d. In this work, a novel gas–solid reaction mechanism is described. Transient surface photovoltage indicates that the synthesized (CH 3 NH 3 ) 3 Bi 2 I 9 film is a p-type semi-conductor material. The solar cell with the structure FTO/TiO 2 /(CH 3 NH 3 ) 3 Bi 2 I 9 /Spiro-OMeTAD/Au obtained a power conversion efficiency of 0.039%.
Authors
- Chaoliang Zhao (ORCID: https://orcid.org/0000-0002-4224-7058)
- Zhi Zheng (ORCID: https://orcid.org/0000-0002-5889-4305)
- Haili Yu
- Busheng Zhang
- Lingling Wang (ORCID: https://orcid.org/0000-0003-4067-1995)
Institutions
- Zhengzhou University (CN)
- Xuchang University (CN)
Publication Details
- Journal
- Semiconductor Science and Technology
- Published
- 2025-02-20
- DOI
- https://doi.org/10.1088/1361-6641/adb87a
- Citations
- 1
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.73
Funders
- National Natural Science Foundation of China
- Natural Science Foundation of Henan Province
- Key Scientific Research Project of Colleges and Universities in Henan Province