TY - JOUR
T1 - Ammonia sensing characteristics of an ITO-V2O5 based chemoresistive dual-type gas sensors (CDGS) decorated with platinum nanoparticles
AU - Yao, Pao Chi
AU - Niu, Jing Shiuan
AU - Dai, Guang Yu
AU - Jian, Jia Jin
AU - Hsu, Wei Chou
AU - Lin, Kun Wei
AU - Liu, Wen-Chau
N1 - Funding Information:
High-performance operation on HRSEM (Hitachi SU8000, EM 003600) and EDS (BRUKER XFlash15060) by Hui-Jung Shin (the Core Facility Center, National Cheng Kung University, Tainan, TAIWAN) is appreciated. The authors would like to thanks Dr. Po-Hsien Lai with the Core Facility of National Cheng Kung University for supporting the use of ESCA000200. This work was partly supported under the Contract MOST 111-2221-E-006-207-MY2.
Funding Information:
High-performance operation on HRSEM (Hitachi SU8000, EM 003600) and EDS (BRUKER XFlash15060) by Hui-Jung Shin (the Core Facility Center, National Cheng Kung University, Tainan, TAIWAN) is appreciated. The authors would like to thanks Dr. Po-Hsien Lai with the Core Facility of National Cheng Kung University for supporting the use of ESCA000200. This work was partly supported under the Contract MOST 111‐2221‐E‐006‐207‐MY2.
Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2023/10/1
Y1 - 2023/10/1
N2 - A new chemoresistive dual-type gas sensors (CDGS) has been produced and reported. The studied CDGS contains an indium tin oxide (ITO) thin layer, a vanadium (V2O5) thin layer, and platinum (Pt) nanoparticles (NPs) on a chip. The n- and p-type ammonia (NH3) sensing behaviors of the studied Pt NP/ ITO-V2O5 CDGS were systematically investigated. Initially, a high-resolution scanning electron microscopy (HRSEM), atomic force microscopy (AFM), energy dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) were employed to investigate the intrinsic properties. In experiments, significantly different current-voltage (I-V) curves of Pt NP/ ITO (Sensor A) and Pt NP/ V2O5 (Sensor B) were obtained in NH3-contained ambiences. The sensing response SR values for Sensors A and B are 7.54 and 1.14, respectively, under 1000 ppm NH3/air gas at 275°C. The various transient current-time (I-t) curves, under 1, 10, 100, and 1000 ppm NH3 /air gas at 275°C, for Sensors A and B were clearly observed. Moreover, both Sensors A and B demonstrated good selectivity toward NH3 gas. Thus, the presented Pt NP/ ITO-V2O5 CDGS provides the prominent potentiality and flexibility for NH3 gas detecting application.
AB - A new chemoresistive dual-type gas sensors (CDGS) has been produced and reported. The studied CDGS contains an indium tin oxide (ITO) thin layer, a vanadium (V2O5) thin layer, and platinum (Pt) nanoparticles (NPs) on a chip. The n- and p-type ammonia (NH3) sensing behaviors of the studied Pt NP/ ITO-V2O5 CDGS were systematically investigated. Initially, a high-resolution scanning electron microscopy (HRSEM), atomic force microscopy (AFM), energy dispersive X-ray spectroscopy (EDS), and X-ray photoelectron spectroscopy (XPS) were employed to investigate the intrinsic properties. In experiments, significantly different current-voltage (I-V) curves of Pt NP/ ITO (Sensor A) and Pt NP/ V2O5 (Sensor B) were obtained in NH3-contained ambiences. The sensing response SR values for Sensors A and B are 7.54 and 1.14, respectively, under 1000 ppm NH3/air gas at 275°C. The various transient current-time (I-t) curves, under 1, 10, 100, and 1000 ppm NH3 /air gas at 275°C, for Sensors A and B were clearly observed. Moreover, both Sensors A and B demonstrated good selectivity toward NH3 gas. Thus, the presented Pt NP/ ITO-V2O5 CDGS provides the prominent potentiality and flexibility for NH3 gas detecting application.
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U2 - 10.1016/j.snb.2023.134071
DO - 10.1016/j.snb.2023.134071
M3 - Article
AN - SCOPUS:85160866504
SN - 0925-4005
VL - 392
JO - Sensors and Actuators B: Chemical
JF - Sensors and Actuators B: Chemical
M1 - 134071
ER -