期刊
NANOSCALE
卷 9, 期 25, 页码 8580-8585出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr00250e
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资金
- National Key Research and Development Program of China [2016YFB0401701, 2017YFA0305550]
- National Basic Research Program of China [2014CB931702]
- NSFC [61604074, 51572128, 51672132]
- NSFC-RGC [5151101197]
- Natural Science Foundation of Jiangsu Province [BK20160827]
- China Postdoctoral Science Foundation [2016M590455]
- Fundamental Research Funds for the Central Universities [30917011202, 30915012205, 30916015106]
- PAPD of Jiangsu Higher Education Institutions
In this work, a novel concept of the all-inkjet-printed flexible photodetectors based on ZnO nanocrystals with high performance was proposed and demonstrated with emphasis on the influence of different post-treatments including UV light irradiation and high temperature annealing. The photodetectors based on UV-treated ZnO nanocrystal films exhibit a responsivity and an on/off ratio as high as 0.14 AW(-1) and >10(3), respectively, which are better than the thermally treated devices. The high performance of ZnO nanocrystal-based photodetectors originates from unique band-edge modulation among the nanoparticles, where the existence of Schottky barriers leads to a low dark current and gives rise to a fast photoelectric response. The photodetector is capable of 500 bending cycles, and almost no degradation is observed. The as-obtained all-printable devices open up the possibility of fabricating a low-cost, solution processed, flexible, and large-area integrated optoelectronic sensor circuitry for future practical applications.
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