Full text

Turn on search term navigation

© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

The fluorescence intensity of inorganic CsPbBr3 (CPB) perovskite nanocrystals (NCs) decreases in the presence of O2. In this study, we synthesized CPB NCs with various shapes and sizes for use as optical gas sensing materials. We fabricated O2 gas sensors from the various CPB NCs on several porous and nonporous substrates and examined the effects of the NC shapes and aggregate sizes and the substrate pore size on the device response. Our sensor fabricated from CPB nanocrystals on a porous substrate exhibited the highest response; the porous substrate allowed the rapid diffusion of O2 such that the NC surface was exposed effectively to the gas. Thus, the interfacial interaction between NC surfaces and substrates is a critical factor for consideration when preparing gas sensors with a high response.

Details

Title
Cesium Lead Bromide Nanocrystals: Synthesis, Modification, and Application to O2 Sensing
Author
Zhi-Hao Huang 1 ; Layek, Madhuja 2   VIAFID ORCID Logo  ; Chia-Feng, Li 3 ; Kun-Mu, Lee 4   VIAFID ORCID Logo  ; Yu-Ching, Huang 3 

 Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 33302, Taiwan 
 Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan; School of Engineering, Brown University, Providence, RI 02912, USA 
 Department of Materials Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan 
 Department of Chemical and Materials Engineering, Chang Gung University, Taoyuan City 33302, Taiwan; Department of Pediatrics, Division of Neonatology, Chang Gung Memorial Hospital, Taoyuan City 33305, Taiwan 
First page
8853
Publication year
2022
Publication date
2022
Publisher
MDPI AG
e-ISSN
14248220
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2739456941
Copyright
© 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.