期刊
JOURNAL OF ELECTRONIC MATERIALS
卷 48, 期 7, 页码 4726-4732出版社
SPRINGER
DOI: 10.1007/s11664-019-07260-0
关键词
ZnO; microwave assisted sonochemical method; surface modification; green emission
资金
- Qatar National Research Fund (Qatar Foundation) [23-116-2-041]
The present paper examines the synthesis of ZnO nanoparticles and their surface modification via the microwave assisted sonochemical method along with its successful application in designing a smart UV sensor. The structure of the prepared samples was investigated using XRD, XPS and its respective crystallinity studies. The photoluminescence spectroscopy identified an increase in the green emission intensity due to surface modification which is attributed to the density of oxygen vacancies. The variation in the dielectric constant and dielectric loss values with surface modification is clearly substantiated. As a case study, it was observed a smart UV sensor fabricated using this surface modified ZnO response and decay time that are 14s and 16s, respectively. Also, the possibility of surface modification in tuning the sensing responses has been investigated in detail.
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