Enhancement of Perovskite Photodetector Using MAPbI 3 with Formamidinium Bromide

Dong Jae Shin and Hyung Wook Choi ()
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Dong Jae Shin: Department of Electrical Engineering, Gachon University, Seongnam 13120, Republic of Korea
Hyung Wook Choi: Department of Electrical Engineering, Gachon University, Seongnam 13120, Republic of Korea

Energies, 2024, vol. 17, issue 9, 1-11

Abstract: In this study, a perovskite-based mixed cation/anion ultraviolet photodetector with an added halide material is fabricated using perovskite combined with an ABX_3 structure. Mixed cation/anion perovskite thin films of MAPbI 3 /FABr are manufactured through a relatively simple solution process and employed as light-absorption layers. In the produced thin film, SnO 2 –sodium dodecylbenzenesulfonate acts as an electron transport layer and spiro-OMeTAD acts as a hole injection layer. Compared to a single cation/anion perovskite, the fabricated device exhibits phase stability and optoelectronic properties, and demonstrates a responsivity of 72.2 mA/W and a detectability of 4.67 × 10 13 Jones. In addition, the films show an external quantum efficiency of 56%. This suggests that mixed cation/anion films can replace single cation/anion perovskite films. Thus, photodetectors based on lead halides that can be applied in various fields have recently been manufactured.

Keywords: deep-ultraviolet (UV) photodetectors; MAPbI 3; FABr (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2024
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