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Exploring the weak visible-near-infrared and NO2detection capabilities of PbS/Sb2O5heterostructures with DFT interpretations.
Kumar, Utkarsh; Tsou, Yu-Che; Deng, Zu-Yin; Yadav, B C; Huang, Wen-Min; Wu, Chiu-Hsien.
Afiliación
  • Kumar U; Department of Physics, National Chung Hsing University, Taichung 402, Taiwan.
  • Tsou YC; Institute of Nanoscience, National Chung Hsing University, Taichung 402, Taiwan.
  • Deng ZY; Department of Physics, National Chung Hsing University, Taichung 402, Taiwan.
  • Yadav BC; Nanomaterials and Sensor Research Laboratory, Department of Physics, Babasaheb Bhimrao Ambedkar University, Lucknow 226025, India.
  • Huang WM; Department of Physics, National Chung Hsing University, Taichung 402, Taiwan.
  • Wu CH; Department of Physics, National Chung Hsing University, Taichung 402, Taiwan.
Nanotechnology ; 35(26)2024 Apr 10.
Article en En | MEDLINE | ID: mdl-38527363
ABSTRACT
The need for photosensors and gas sensors arises from their pivotal roles in various technological applications, ensuring enhanced efficiency, safety, and functionality in diverse fields. In this paper, interlinked PbS/Sb2O5thin film has been synthesized by a magnetron sputtering method. We control the temperature to form the nanocomposite by using their different nucleation temperature during the sulfonation process. A nanostructured PbS/Sb2O5with cross-linked morphology was synthesized by using this fast and efficient method. This method has also been used to grow a uniform thin film of nanocomposite. The photo-sensing and gas-sensing properties related to the PbS/Sb2O5compared with those of other nanomaterials have also been investigated. The experimental and theoretical calculations reveal that the PbS/Sb2O5exhibits extraordinarily superior photo-sensing and gas-sensing properties in terms of providing a pathway for electron transport to the electrode. The attractive highly sensitive photo and gas sensing properties of PbS/Sb2O5make them applicable for many different kinds of applications. The responsivity and detectivity of PbS/Sb2O5are 0.28 S/mWcm-2and 1.68 × 1011Jones respectively. The sensor response towards NO2gas was found to be 0.98 at 10 ppb with an limit of detection (LOD) of 0.083 ppb. The PbS/Sb2O5exhibits high selectivity towards the NO2gas. Density functional theory (DFT) and time-dependent density functional theory (TD-DFT) were used to analyze the geometries, electronic structure, and electronic absorption spectra of a light sensor fabricated by PbS/Sb2O5. The results are very analogous to the experimental results. Both photosensors and gas sensors are indispensable tools that contribute significantly to the evolution of technology and the improvement of various aspects of modern life.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanotechnology Año: 2024 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Nanotechnology Año: 2024 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Reino Unido