TiO2-decorated graphenes as efficient photoswitches with high oxygen   sensitivity

doi:10.1039/c1sc00344e

CORC > 北京大学 > 化学与分子工程学院

	TiO2-decorated graphenes as efficient photoswitches with high oxygen sensitivity
	Wang, Qing ; Guo, Xuefeng ; Cai, Lichao ; Cao, Yang ; Gan, Lin ; Liu, Song ; Wang, Zhenxing ; Zhang, Hongtao ; Li, Lidong
刊名	chemical science
	2011
关键词	FIELD-EFFECT TRANSISTORS WALLED CARBON NANOTUBES CHEMICAL SENSORS TITANIUM-DIOXIDE LAYER GRAPHENE VAPOR SENSORS OXIDE BIOSENSORS FILMS GAS
DOI	10.1039/c1sc00344e
英文摘要	We detail a facile fabrication and testing method of functionalizing single-layer graphenes (SLGs) by photoactive TiO2 thin films as test-beds for building efficient multifunctional optoelectronic devices. Interestingly, tuning the photoactivity of TiO2 enables us to realize fast and significant photoswitching effects in TiO2-graphene devices. More importantly, using the hybrid devices as solid-state gas sensors, we have demonstrated a reversible and linear electrical sensitivity towards oxygen gas in the full concentration range (5-100%) at room temperature and ambient pressure, with a calculated minimum detection limit (MDL) of 0.01% oxygen. The unique oxygen sensitivity of the devices is attributed to the synergetic effect of the photoactivity of TiO2 and the environmental ultrasensitivity of SLGs. These results form the basis for new types of future ultrasensitive multifunctional integrated devices for a variety of possible detection and/or sensing applications.; Chemistry, Multidisciplinary; SCI(E); EI; 25; ARTICLE; 9; 1860-1864; 2
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/241089]
专题	化学与分子工程学院工学院
推荐引用方式 GB/T 7714	Wang, Qing,Guo, Xuefeng,Cai, Lichao,et al. TiO2-decorated graphenes as efficient photoswitches with high oxygen sensitivity[J]. chemical science,2011.
APA	Wang, Qing.,Guo, Xuefeng.,Cai, Lichao.,Cao, Yang.,Gan, Lin.,...&Li, Lidong.(2011).TiO2-decorated graphenes as efficient photoswitches with high oxygen sensitivity.chemical science.
MLA	Wang, Qing,et al."TiO2-decorated graphenes as efficient photoswitches with high oxygen sensitivity".chemical science (2011).