Logic Control of Interface-Induced Charge-Trapping Effect for   Ultrasensitive Gas Detection with All-Mirror-Image Symmetry

doi:10.1002/admt.201600067

CORC > 北京大学 > 化学与分子工程学院

	Logic Control of Interface-Induced Charge-Trapping Effect for Ultrasensitive Gas Detection with All-Mirror-Image Symmetry
	Jia, Chuancheng ; Wang, Qing ; Xin, Na ; Zhou, Jian ; Gong, Yao ; Li, Lidong ; Sun, Qiang ; Guo, Xuefeng
刊名	ADVANCED MATERIALS TECHNOLOGIES
	2016
关键词	FIELD-EFFECT-TRANSISTOR ANATASE TIO2 COVALENT CHEMISTRY TITANIUM-DIOXIDE CARBON NANOTUBES GRAPHENE SENSORS PHOTODETECTORS BIOSENSORS ADSORPTION
DOI	10.1002/admt.201600067
英文摘要	Controlling the type and concentration of charge carriers is at the heart of modern electronics because of its importance to realize functional devices for potential applications in broad areas ranging from integrated circuits and energy conversion to catalysis and chemical/biological detection. Toward this objective, here a straightforward design of a high-performance stimuli-responsive hybrid optoelectronic device with high-level mirror-image symmetry is presented. The device consists of suspended pristine graphene that is in direct contact with photoactive TiO2 quantum dots. Through a combination of photoexcitation and gate regulation, two types of photoinduced free electrons trapped at the TiO2/graphene interface with different behaviors are identified, allowing logical control of both the carrier type and charge trapping/detrapping process. Such control leads to the TiO2-decorated graphene displaying high chemical environment sensitivity. Upon exposure of the photoexcited hybrid device to different gases, such as O-2 as an electron acceptor and NH3 or H-2 as an electron donor, all-mirror-image sensing with controllable fast response rate and ultralow detection limit in a single optoelectronic device is established. This approach offers novel interface engineering insights to develop high-performance multifunctional environmental/chemical sensors and other optoelectronic devices.; NSFC [21225311, 91333102, 21373014]; 973 Project [2012CB921404]; SCI(E); ARTICLE; 3; 1
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/476624]
专题	化学与分子工程学院工学院
推荐引用方式 GB/T 7714	Jia, Chuancheng,Wang, Qing,Xin, Na,et al. Logic Control of Interface-Induced Charge-Trapping Effect for Ultrasensitive Gas Detection with All-Mirror-Image Symmetry[J]. ADVANCED MATERIALS TECHNOLOGIES,2016.
APA	Jia, Chuancheng.,Wang, Qing.,Xin, Na.,Zhou, Jian.,Gong, Yao.,...&Guo, Xuefeng.(2016).Logic Control of Interface-Induced Charge-Trapping Effect for Ultrasensitive Gas Detection with All-Mirror-Image Symmetry.ADVANCED MATERIALS TECHNOLOGIES.
MLA	Jia, Chuancheng,et al."Logic Control of Interface-Induced Charge-Trapping Effect for Ultrasensitive Gas Detection with All-Mirror-Image Symmetry".ADVANCED MATERIALS TECHNOLOGIES (2016).