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Get Free AccessAbstract Zinc oxide is potentially a useful material for ultraviolet detectors; however, a relatively long response time hinders practical implementation. Here by designing and fabricating a self-powered ZnO/perovskite-heterostructured ultraviolet photodetector, the pyroelectric effect, induced in wurtzite ZnO nanowires on ultraviolet illumination, has been utilized as an effective approach for high-performance photon sensing. The response time is improved from 5.4 s to 53 μs at the rising edge, and 8.9 s to 63 μs at the falling edge, with an enhancement of five orders in magnitudes. The specific detectivity and the responsivity are both enhanced by 322%. This work provides a novel design to achieve ultrafast ultraviolet sensing at room temperature via light-self-induced pyroelectric effect. The newly designed ultrafast self-powered ultraviolet nanosensors may find promising applications in ultrafast optics, nonlinear optics, optothermal detections, computational memories and biocompatible optoelectronic probes.
Zhaona Wang, Ruomeng Yu, Caofeng Pan, Zhaoling Li, Jin Yang, Yi Fang, Zhong Lin Wang (2015). Light-induced pyroelectric effect as an effective approach for ultrafast ultraviolet nanosensing. , 6(1), DOI: https://doi.org/10.1038/ncomms9401.
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Type
Article
Year
2015
Authors
7
Datasets
0
Total Files
0
Language
en
DOI
https://doi.org/10.1038/ncomms9401
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