Study of the influence of the precursors on the sensing properties of ZnO:Cu system

被引：4

作者：

Ramos, A. ^{[1
]}

Urbieta, A. ^{[1
]}

Escalante, G. ^{[1
,2
]}

Hidalgo, P. ^{[1
]}

Espinos, J. P. ^{[3
]}

Fernandez, P. ^{[1
]}

机构：

[1] Univ Complutense Madrid, Fac Ciencias Fis, Dept Fis Mat, Plaza Ciencias 1, E-28040 Madrid, Spain

[2] Tecnol Nacl Mexico, Inst Tecnol Super Tepeaca, Tepeaca 75219, Mexico

[3] Univ Seville, CSIC, Inst Ciencia Mat Sevilla, Avda Amer Vespuccio 49, Seville 41092, Spain

来源：

CERAMICS INTERNATIONAL | 2020年 / 46卷 / 06期

关键词：

ZnO; Cu doped; Gas sensing; XPS; Luminescence; CU; COPPER; SPECTROSCOPY; LUMINESCENCE; DETECTOR;

D O I：

10.1016/j.ceramint.2019.12.068

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The properties of ZnO based materials for ethanol detection have been studied. Cu doped samples obtained from different precursors have been investigated. ZnO and ZnS have been used as host and Cu and CuO as dopant sources. The sensing measurements have been mostly performed at room temperature. To monitor the effect of the presence of gas, resistivity and photoluminescence experiments with and without sensing gas have been carried out. The sensing behaviour is affected by the nature of the precursors used. For ZnO:Cu and ZnO:CuO series, a higher sensitivity is obtained at the lower gas concentrations, the better response is obtained for the sample ZnO:Cu with wt.1% of metallic copper. Strong segregation effects observed in these samples could be deleterious for the sensing properties. In the series ZnS:CuO, no segregation is observed, however the sensing behaviour is erratic and attributed to the reduction of Cu ions to the metallic state.

引用

页码：8358 / 8367

页数：10

共 30 条

[1] [Anonymous], 2015, SCI JET
[2] BRATTAIN WH, 1953, AT&T TECH J, V32, P1
[3] SURFACE PROPERTIES OF SEMICONDUCTORS
BRATTAIN, WH
GARRETT, CGB
[J]. PHYSICA, 1954, 20 (10): : 885 - 892
[4] Briggs D., 1983, Practical Surface Analysis: by Auger and X-ray Photoelectron Spectroscopy
[5] Synergism between Cu and Zn sites in Cu/Zn catalysts for methanol synthesis
Chen, HY
Lau, SP
Chen, L
Lin, J
Huan, CHA
Tan, KL
Pan, JS
[J]. APPLIED SURFACE SCIENCE, 1999, 152 (3-4) : 193 - 199
[6] Choopun S, 2012, NANOWIRES - RECENT ADVANCES, P3, DOI 10.5772/54385
[7] Investigation on formaldehyde gas sensor with ZnO thick film prepared through microwave heating method
Chu, Xiangfeng
Chen, Tongyun
Zhang, Wangbing
Zheng, Banqiao
Shui, Hengfu
[J]. SENSORS AND ACTUATORS B-CHEMICAL, 2009, 142 (01): : 49 - 54
[8] Comini E, 2009, SOLID STATE GAS SENSING, P47, DOI 10.1007/978-0-387-09665-0_2
[9] LUMINESCENT TRANSITIONS ASSOCIATED WITH DIVALENT COPPER IMPURITIES AND GREEN EMISSION FROM SEMICONDUCTING ZINC OXIDE
DINGLE, R
[J]. PHYSICAL REVIEW LETTERS, 1969, 23 (11) : 579 - &
[10] Interface effects for Cu, CuO, and Cu2O deposited on SiO2 and ZrO2.: XPS determination of the valence state of copper in Cu/SiO2 and Cu/ZrO2 catalysts
Espinós, JP
Morales, J
Barranco, A
Caballero, A
Holgado, JP
González-Elipe, AR
[J]. JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (27) : 6921 - 6929

← 1 2 3 →