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    • Significantly enhanced NO2 gas-sensing performance of nanojunction-networked SnO2 nanowires by pulsed UV-radiation
    Authors: Nguyen, Manh Hung;  Advisor: Chu, Manh Hung; Nguyen, Van Duy; Nguyen, Duc Hoa; Hoang, Si Hong; Tran, Khoa Dang; Nguyen, Ngoc Viet; Le, Viet Thong; Phan, Hong Phuoc; Nguyen, Van Hieu;  Co-Author: - (2021)

    A unique combination of high response and fast response-recovery is still a challenge in the development of room-temperature gas sensors. Herein, we demonstrated the on-chip growth of nanojunction-networked SnO2 NW sensors to work under UV-radiation at room temperature. The morphological, compositional, and structural properties of synthesized SnO2 nanowires were examined using field emission electron microscopy, energy dispersive spectroscopy, X-ray diffraction, and high-resolution transmission electron microscopy, respectively. The results presented the SnO2 NWs with smooth surfaces were entangled between the Pt electrode. Besides, the internal properties showed the SnO2 NWs were crystallized as the tetragonal rutile structure of SnO2. The use of UV-radiation with the optimum inte...