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High-Performance Optoelectronic Gas Sensing Based on All-Inorganic Mixed-Halide Perovskite Nanocrystals with Halide Engineering.
Kim, Jiyun; John, Alishba T; Li, Hanchen; Huang, Chien-Yu; Chi, Yuan; Anandan, Pradeep Raja; Murugappan, Krishnan; Tang, Jianbo; Lin, Chun-Ho; Hu, Long; Kalantar-Zadeh, Kourosh; Tricoli, Antonio; Chu, Dewei; Wu, Tom.
Afiliação
  • Kim J; School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia.
  • John AT; Nanotechnology Research Laboratory, Research School of Electrical, Energy and Materials Engineering Chemistry, College of Engineering and Computer Science, Australian National University (ANU), Canberra, ACT, 0200, Australia.
  • Li H; School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia.
  • Huang CY; School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia.
  • Chi Y; School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia.
  • Anandan PR; School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia.
  • Murugappan K; Commonwealth Scientific and Industrial Research Organization (CSIRO), Mineral Resources, Clayton South, Victoria, 3169, Australia.
  • Tang J; School of Chemical Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia.
  • Lin CH; School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia.
  • Hu L; School of Materials Science and Engineering, University of New South Wales (UNSW), Sydney, NSW, 2052, Australia.
  • Kalantar-Zadeh K; School of Engineering, Macquarie University, Sydney, NSW, 2019, Australia.
  • Tricoli A; School of Chemical and Biomolecular Engineering, University of Sydney, Sydney, NSW, 2006, Australia.
  • Chu D; Nanotechnology Research Laboratory, Research School of Electrical, Energy and Materials Engineering Chemistry, College of Engineering and Computer Science, Australian National University (ANU), Canberra, ACT, 0200, Australia.
  • Wu T; Nanotechnology Research Laboratory, School of Biomedical Engineering, Faculty of Engineering, The University of Sydney, Sydney, NSW, 2006, Australia.
Small Methods ; 8(2): e2300417, 2024 Feb.
Article em En | MEDLINE | ID: mdl-37330645
ABSTRACT
Gas sensors are of great interest to portable and miniaturized sensing technologies with applications ranging from air quality monitoring to explosive detection and medical diagnostics, but the existing chemiresistive NO2 sensors still suffer from issues such as poor sensitivity, high operating temperature, and slow recovery. Herein, a high-performance NO2 sensors based on all-inorganic perovskite nanocrystals (PNCs) is reported, achieving room temperature operation with ultra-fast response and recovery time. After tailoring the halide composition, superior sensitivity of ≈67 at 8 ppm NO2 is obtained in CsPbI2 Br PNC sensors with a detection level down to 2 ppb, which outperforms other nanomaterial-based NO2 sensors. Furthermore, the remarkable optoelectronic properties of such PNCs enable dual-mode operation, i.e., chemiresistive and chemioptical sensing, presenting a new and versatile platform for advancing high-performance, point-of-care NO2 detection technologies.
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article
Texto completo
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Texto completo: 1 Base de dados: MEDLINE Idioma: En Ano de publicação: 2024 Tipo de documento: Article