Reduced Defects and Enhanced Performance of (FAPbl(3))(0.97)(MAPbBr(3))(0.03)-Based Perovskite Solar Cells by Trimesic Acid Additives
- Authors
- Quy, Hoang, V; Truyen, Dang H.; Kim, Sangmo; Bark, Chung W.
- Issue Date
- 22-Jun-2021
- Publisher
- AMER CHEMICAL SOC
- Citation
- ACS OMEGA, v.6, no.24, pp.16151 - 16158
- Journal Title
- ACS OMEGA
- Volume
- 6
- Number
- 24
- Start Page
- 16151
- End Page
- 16158
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/81680
- DOI
- 10.1021/acsomega.1c01909
- ISSN
- 2470-1343
- Abstract
- A high-quality organolead trihalide perovskite film with large-sized crystalline grains and smooth surfaces is required to obtain efficient perovskite solar cells (PSCs). Herein, high-quality (FAPbI(3))(0.97)(MAPbBr(3))(0.03) perovskite films were fabricated using trimesic acid (TMA) additives in a halide perovskite precursor solution to obtain efficient PSCs. The X-ray diffraction analysis and scanning electron microscopy of the films revealed that the TMA had a significant effect on the roughness of the films by acting as a surface link, thus reducing the surface defects and recombination at the grain boundaries. In addition, with the addition of the TMA additive, a smooth perovskite film with a flat surface and no pinholes was obtained. The perovskite film was used to fabricate a PSC device, and the device exhibited a high power conversion efficiency of 17.26%, which was higher than that of the control device (15.15%) under the same conditions. This study demonstrates a facile method to passivate defects on the perovskite layer via surface modification.
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