Two-Dimensional (PEA)2PbBr4 Perovskites Sensors for Highly Sensitive Ethanol Vapor Detection

Ching-Ho Tien; Kuan-Lin Lee; Chun-Cheng Tao; Zhan-Qi Lin; Zi-Hao Lin; Lung-Chien Chen

doi:10.3390/s22218155

Two-Dimensional (PEA)₂PbBr₄ Perovskites Sensors for Highly Sensitive Ethanol Vapor Detection

Sensors (Basel). 2022 Oct 25;22(21):8155. doi: 10.3390/s22218155.

Authors

Ching-Ho Tien¹, Kuan-Lin Lee², Chun-Cheng Tao², Zhan-Qi Lin², Zi-Hao Lin², Lung-Chien Chen²

Affiliations

¹ Department of Electronic Engineering, Lunghwa University of Science and Technology, Taoyuan 33306, Taiwan.
² Department of Electro-Optical Engineering, National Taipei University of Technology, Taipei 10608, Taiwan.

Abstract

Two-dimensional (2D) perovskite have been widely researched for solar cells, light-emitting diodes, photodetectors because of their excellent environmental stability and optoelectronic properties in comparison to three-dimensional (3D) perovskite. In this study, we demonstrate the high response of 2D-(PEA)₂PbBr₄ perovskite of the horizontal vapor sensor was outstandingly more superior than 3D-MAPbBr₃ perovskite. 2D transverse perovskite layer have the large surface-to-volume ratio and reactive surface, with the charge transfer mechanism, which was suitable for vapor sensing and trapping. Thus, 2D perovskite vapor sensors demonstrate the champion current response ratio R of 107.32 under the ethanol vapors, which was much faster than 3D perovskite (R = 2.92).

Keywords: (PEA)2PbBr4; detection; ethanol sensor; lead halide perovskites; two-dimensional perovskite.

Grants and funding

This research was funded by National Science and Technology Council (Taiwan), grant numbers 111-2221-E-027-040-MY3 and 111-2221-E-262-006.