Light-induced pyroelectric effect as an effective approach for ultrafast ultraviolet nanosensing.,Nature Communications

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Light-induced pyroelectric effect as an effective approach for ultrafast ultraviolet nanosensing.
Nature Communications ( IF 14.7 ) Pub Date : 2015-Sep-25 , DOI: 10.1038/ncomms9401
Zhaona Wang _{1,

2} , Ruomeng Yu ₁ , Caofeng Pan ₃ , Zhaoling Li ₁ , Jin Yang ₁ , Fang Yi ₁ , Zhong Lin Wang _{1,

3}

Affiliation

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.

中文翻译：

光致热释电效应是超快紫外纳米传感的有效方法。

氧化锌可能是紫外线探测器的有用材料；然而，相对较长的响应时间阻碍了实际实施。通过设计和制造自供电的 ZnO/钙钛矿异质结构紫外光电探测器，纤锌矿 ZnO 纳米线在紫外照射下诱导的热释电效应已被用作高性能光子传感的有效方法。上升沿响应时间从 5.4 s 提高到 53 μs，下降沿响应时间从 8.9 s 提高到 63 μs，提高了 5 个数量级。比探测率和响应率均提高了322%。这项工作提供了一种新颖的设计，通过光自感热释电效应实现室温下的超快紫外线传感。新设计的超快自供电紫外纳米传感器可能在超快光学、非线性光学、光热检测、计算存储器和生物相容性光电探针等领域具有广阔的应用前景。

更新日期：2015-09-28

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