A Real-Time Wearable UV-Radiation Monitor based on a High-Performance p-CuZnS/n-TiO2 Photodetector

Advanced Materials
Xiaojie XuXiaosheng Fang

Abstract

Solar radiation, especially ultraviolet (UV) light, is a major hazard for most skin-related cancers. The growing needs for wearable health monitoring systems call for a high-performance real-time UV sensor to prevent skin diseases caused by excess UV exposure. To this end, here a novel self-powered p-CuZnS/n-TiO2 UV photodetector (PD) with high performance is successfully developed (responsivity of 2.54 mA W-1 at 0 V toward 300 nm). Moreover, by effectively replacing the Ti foil with a thin Ti wire for the anodization process, the conventional planar rigid device is artfully turned into a fiber-shaped flexible and wearable one. The fiber-shaped device shows an outstanding responsivity of 640 A W-1 , external quantum efficiency of 2.3 × 105 %, and photocurrent of ≈4 mA at 3 V, exceeding those of most current UV PDs. Its ultrahigh photocurrent enables it to be easily integrated with commercial electronics to function as a real-time monitor system. Thus, the first real-time wearable UV radiation sensor that reads out ambient UV power density and transmits data to smart phones via wifi is demonstrated. This work not only presents a promising wearable health monitor, but also provides a general strategy for designing and fabricating...Continue Reading

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Citations

Feb 21, 2019·Advanced Materials·Sa CaiXiaosheng Fang
Dec 12, 2020·Advanced Materials·De-Sheng LiuZhiming Wang
Jan 14, 2021·Scientific Reports·Animesh PandeySudhir Husale
Dec 31, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Yu YaoCailong Liu
Mar 9, 2021·ACS Applied Materials & Interfaces·Mohit KumarHyungtak Seo
May 11, 2021·ACS Applied Materials & Interfaces·Zhongzheng HuangQunqing Li
May 27, 2021·Scientific Reports·Lalit GoswamiGovind Gupta
May 25, 2021·Advanced Science·Min Hyung KangYoung Min Song
Feb 20, 2020·ACS Applied Materials & Interfaces·Jing LiLixia Zhao
Aug 30, 2019·ACS Applied Materials & Interfaces·Jingjing GuoQionghai Dai
May 24, 2019·ACS Applied Materials & Interfaces·Yuanmeng XiaZhenyu Li
Dec 16, 2021·ACS Applied Materials & Interfaces·Alphi Maria ThomasSoon-Gil Yoon
Jan 29, 2022·The Journal of Physical Chemistry Letters·Ziqing LiXiaosheng Fang

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