期刊
SCIENCE BULLETIN
卷 62, 期 10, 页码 693-699出版社
SCIENCE PRESS
DOI: 10.1016/j.scib.2017.04.014
关键词
Doped zinc oxide; Colloidal nanocrystals; LSPR; Electrical properties; UV treatment; Ink
资金
- National Key Research and Development Program of China [2016YFB0401701]
- National Basic Research Program of China [2014CB931702]
- National Natural Science Foundation of China [61604074, 51572128]
- National Natural Science Foundation of Research Grants Council [NSFC-RGC5151101197]
- Natural Science Foundation of Jiangsu Province [BK20160827]
- China Postdoctoral Science Foundation [2016M590455]
- Fundamental Research Funds for the Central Universities [30915012205, 30916015106]
- PAPD of Jiangsu Higher Education Institutions, the Opened Fund of the State Key Laboratory on Integrated Optoelectronics [2015IOSKLKF15]
Recently, the localized surface plasmon resonance (LSPR) concept was expanded from noble metals to doped semiconductor nanocrystals (NCs). However, the strengthening of the intrinsically very weak LSPR in NCs remains a great challenge for its applications in optics, electronics and optoelectronics fields. In this work, we report on the remarkable strengthening and controllability of LSPR in ZnO through a dual-doping strategy. First, high quality In-doped ZnO (IZO) NCs with intense LSPR were synthesized by a simple single-pot method. Importantly, the LSPR can be tuned by simply adjusting the concentration of In dopant, as well as by UV light irradiation (photo-induced doping). The pattern of electricity of an IZO NC film matches the shift of LSPR independent of dopant concentration. The UV light irradiation clearly enhanced the electrical properties of the films (350 Omega/sq) due to increase carrier density explained by LSPR and confirmed by X-ray photoelectron spectroscopy. The IZO NCs can be easily dispersed in various organic solvents and serve as inks for assembling uniform films via solution processes. These IZO NC ink is promising for application in next-generation solution-based field effect transistors and other optoelectronic devices. (C) 2017 Science China Press. Published by Elsevier B. V. and Science China Press. All rights reserved.
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