Oxygen Vacancy Defects Boosted High Performance p-Type Delafossite CuCrO2 Gas Sensors

doi:10.1021/acsami.8b10485

	Oxygen Vacancy Defects Boosted High Performance p-Type Delafossite CuCrO2 Gas Sensors
	Tong, Bin 1,3; Deng, Zanhong1,2 ; Xu, Bo 4; Meng, Gang1,2 ; Shao, Jingzhen 1,2; Liu, Hongyu 1,3; Dai, Tiantian 1,3; Shan, Xueyan 1,3; Dong, Weiwei 1,2; Wang, Shimao1,2 ; Zhou, Shu1 ; Tao, Ruhua1,2 ; Fang, Xiaodong1,2
	2018-10-10
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
通讯作者	Meng, Gang(menggang@aiofm.ac.cn)
摘要	p-type ternary oxides can be extensively explored as alternative sensing channels to binary oxides with diverse structural and compositional versatilities. Seeking a novel approach to magnify their sensitivities toward gas molecules, e.g., volatile organic compounds (VOCs), will definitely expand their applications in the frontier area of healthcare and air-quality monitoring. In this work, delafossite CuCrO2 (CCO) nanoparticles with different grain sizes have been utilized as p-type ternary oxide sensors. It was found that singly ionized oxygen vacancies (V-o(center dot)) defects, compared with the grain size of CCO nanoparticles, play an important role in enhancing the charge exchange at the VOCs molecules/CCO interface. In addition to suppressing the hole concentration of the sensor channel, the unpaired electron trapped in V-o(center dot) provides an active site for chemisorptions of environmental oxygen and VOCs molecules. The synergetic effect is responsible for the observed increase of sensitivity. Furthermore, the sensitive (V-o(center dot) defect-rich) CCO sensor exhibits good reproducibility and stability under a moderate operation temperature (<325 degrees C). Our work highlights that V-o(center dot) defects, created via either in situ synthesis or postannealing treatment, could be explored to rationally boost the performance of p-type ternary oxide sensors.
关键词	p-type delafossite CuCrO2 singly ionized oxygen vacancy sensitivity
DOI	10.1021/acsami.8b10485
关键词[WOS]	SENSITIZED SOLAR-CELLS ; SENSING CHARACTERISTICS ; PARTICLE-SIZE ; ZNO ; NIO ; NANOPARTICLES ; OXIDATION ; CUALO2 ; LEVEL ; FILMS
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[11604339] ; National Natural Science Foundation of China[11674324] ; CAS-JSPS Joint Research Projects[GJHZ1891] ; Chinese Academy of Sciences ; National Natural Science Foundation of China[11604339] ; National Natural Science Foundation of China[11674324] ; CAS-JSPS Joint Research Projects[GJHZ1891] ; Chinese Academy of Sciences
项目资助者	National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; CAS-JSPS Joint Research Projects ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences ; Chinese Academy of Sciences
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000447355300105
出版者	AMER CHEMICAL SOC
引用统计	被引频次：109[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/39777
专题	中科院安徽光学精密机械研究所
通讯作者	Meng, Gang
作者单位	1.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Anhui Prov Key Lab Photon Devices & Mat, Hefei 230031, Anhui, Peoples R China 2.Chinese Acad Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Anhui, Peoples R China 3.Univ Sci & Technol China, Hefei 230026, Peoples R China 4.China Pharmaceut Univ, Nanjing 211198, Jiangsu, Peoples R China
第一作者单位	中科院安徽光学精密机械研究所
通讯作者单位	中科院安徽光学精密机械研究所
推荐引用方式 GB/T 7714	Tong, Bin,Deng, Zanhong,Xu, Bo,et al. Oxygen Vacancy Defects Boosted High Performance p-Type Delafossite CuCrO2 Gas Sensors[J]. ACS APPLIED MATERIALS & INTERFACES,2018,10(40):34727-34734.
APA	Tong, Bin.,Deng, Zanhong.,Xu, Bo.,Meng, Gang.,Shao, Jingzhen.,...&Fang, Xiaodong.(2018).Oxygen Vacancy Defects Boosted High Performance p-Type Delafossite CuCrO2 Gas Sensors.ACS APPLIED MATERIALS & INTERFACES,10(40),34727-34734.
MLA	Tong, Bin,et al."Oxygen Vacancy Defects Boosted High Performance p-Type Delafossite CuCrO2 Gas Sensors".ACS APPLIED MATERIALS & INTERFACES 10.40(2018):34727-34734.