A High-Performance Nitro-Explosives Schottky Sensor Boosted by Interface Modulation
Yang, Z (Yang, Zheng); Dou, XC (Dou, Xincun); Zhang, SL (Zhang, Shengli); Guo, LJ (Guo, Linjuan); Zu, BY (Zu, Baiyi); Wu, ZF (Wu, Zhaofeng); Zeng, HB (Zeng, Haibo)
2015
Source PublicationADVANCED FUNCTIONAL MATERIALS
ISSN1616-301X
Volume25Issue:26Pages:4039-4048
Abstract

A high-performance Schottky sensor boosted by interface modulation is fabricated for the detection of trace nitro-explosives vapors. The interface modulation strategy results in a silicon nanowires (SiNWs) array/TiO2/reduced graphene oxide (rGO) sensor with sensitive and selective response toward nitro-explosives vapors. The response of the SiNWs array/TiO2/rGO sensor toward nitro-explosives vapors, such as 9 ppb 2,4,6-trinitrotoluene, 4.9 ppt hexogen, and 0.25 ppq octagon, is boosted by 2.4, 7.5, and 5 times with the insertion of TiO2. Superior selectivity is shown even compared with interfering gases of 10 ppm. Such good sensing performance can be attributed to the good sensing performance of the Schottky heterojunction-based sensor, the Schottky barrier height modulation with the insertion of TiO2, SiNWs array structure enhanced diffusion, and TiO2 nanoparticles enhanced adsorption. This is believed to be the first Schottky heterojunction-based sensor for nitro-explosives vapors detection. This work would open a new way to develop highly sensitive and selective sensors.

KeywordInterface Modulation Nitro-explosives Schottky Sensor Selectivity Tio2
DOI10.1002/adfm.201501120
Indexed BySCI
WOS IDWOS:000357812500007
Citation statistics
Cited Times:26[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.xjipc.cas.cn/handle/365002/4548
Collection中国科学院特殊环境功能材料与器件重点试验室
环境科学与技术研究室
Affiliation1.Chinese Acad Sci, Key Lab Funct Mat & Devices Special Environm, Xinjiang Tech Inst Phys & Chem, Lab Environm Sci & Technol, Urumqi 830011, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Nanjing Univ Sci & Technol, Coll Mat Sci & Engn, Inst Optoelect & Nanomat, Nanjing 210094, Jiangsu, Peoples R China
Recommended Citation
GB/T 7714
Yang, Z ,Dou, XC ,Zhang, SL ,et al. A High-Performance Nitro-Explosives Schottky Sensor Boosted by Interface Modulation[J]. ADVANCED FUNCTIONAL MATERIALS,2015,25(26):4039-4048.
APA Yang, Z .,Dou, XC .,Zhang, SL .,Guo, LJ .,Zu, BY .,...&Zeng, HB .(2015).A High-Performance Nitro-Explosives Schottky Sensor Boosted by Interface Modulation.ADVANCED FUNCTIONAL MATERIALS,25(26),4039-4048.
MLA Yang, Z ,et al."A High-Performance Nitro-Explosives Schottky Sensor Boosted by Interface Modulation".ADVANCED FUNCTIONAL MATERIALS 25.26(2015):4039-4048.
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