TY - JOUR
T1 - Highly sensitive, fast and reversible NO2 sensors at room-temperature utilizing nonplasmonic electrons of ZnO/Pd hybrids
AU - Wang, Jing
AU - Hu, Chenyu
AU - Xia, Yi
AU - Komarneni, Sridhar
N1 - Funding Information:
This work was supported by National Natural Science Foundation of China (Nos. 51802123), Scientific Research Fund of Yunnan Education Department (2019J0034), the Natural Science Foundation of Jiangsu Province (No. BK20180630), the Fundamental Research Funds for the Central Universities (JUSRP11816), Scientific Research Fund of Kunming University of Science and Technology (KKSY201732033), Analysis and Testing Foundation of Kunming University of Science and Technology (2018T20110222).
Funding Information:
This work was supported by National Natural Science Foundation of China (Nos. 51802123 ), Scientific Research Fund of Yunnan Education Department ( 2019J0034 ), the Natural Science Foundation of Jiangsu Province (No. BK20180630 ), the Fundamental Research Funds for the Central Universities ( JUSRP11816 ), Scientific Research Fund of Kunming University of Science and Technology ( KKSY201732033 ), Analysis and Testing Foundation of Kunming University of Science and Technology ( 2018T20110222 ).
Publisher Copyright:
© 2019 Elsevier Ltd and Techna Group S.r.l.
PY - 2020/4/15
Y1 - 2020/4/15
N2 - Herein, we present a high-performance NO2 sensor operating at room temperature based on ZnO nanorods functionalized by nonplasmonic Pd nanoparticles. Optoelectronic measurements revealed that the ZnO/Pd hybrids exhibited high photocurrent with ultrafast rise/decay rates under visible light with optimal wavelength (λ = 475 nm), which was related to the photoexcited nonplasmonic electron injection from Pd nanoparticles to ZnO nanorods. Characterization of the visible-light-activated gas sensing performance is pursued at ppb-level of NO2 resulting in high responses, fast response/recovery rate, low detection limit as well as full reversibility. The enhanced optoelectronic NO2 sensing performance of the ZnO/Pd hybrid was attributed to the photoexcited nonplasmonic electrons. Here, we designed and demonstrated a high-performance NO2 sensing material utilizing the photoexcited nonplasmonic electrons from transition metal nanoparticles. This concept can also be extended to other metal oxide/transition metal nanoparticle heterostructures for optoelectronic devices.
AB - Herein, we present a high-performance NO2 sensor operating at room temperature based on ZnO nanorods functionalized by nonplasmonic Pd nanoparticles. Optoelectronic measurements revealed that the ZnO/Pd hybrids exhibited high photocurrent with ultrafast rise/decay rates under visible light with optimal wavelength (λ = 475 nm), which was related to the photoexcited nonplasmonic electron injection from Pd nanoparticles to ZnO nanorods. Characterization of the visible-light-activated gas sensing performance is pursued at ppb-level of NO2 resulting in high responses, fast response/recovery rate, low detection limit as well as full reversibility. The enhanced optoelectronic NO2 sensing performance of the ZnO/Pd hybrid was attributed to the photoexcited nonplasmonic electrons. Here, we designed and demonstrated a high-performance NO2 sensing material utilizing the photoexcited nonplasmonic electrons from transition metal nanoparticles. This concept can also be extended to other metal oxide/transition metal nanoparticle heterostructures for optoelectronic devices.
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U2 - 10.1016/j.ceramint.2019.12.081
DO - 10.1016/j.ceramint.2019.12.081
M3 - Article
AN - SCOPUS:85076246818
SN - 0272-8842
VL - 46
SP - 8462
EP - 8468
JO - Ceramics International
JF - Ceramics International
IS - 6
ER -