High-Responsivity Natural-Electrolyte Undersea Photoelectrochemical Photodetector with Self-Powered Cu@GaN Nanowires Network

Han Chen; Zefeng Lin; Hongwei QiuYan TangShini YangJingtian ZhaoQicheng ZhouJun WangGuozhen LiuYang ZhaoDongsheng ChenZhibin LuoFeiya XuShengli HuangXiaohong ChenShuping LiDuanjun CaiJunyong Kang

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High-Responsivity Natural-Electrolyte Undersea Photoelectrochemical Photodetector with Self-Powered Cu@GaN Nanowires Network

机译：High-Responsivity Natural-Electrolyte Undersea Photoelectrochemical Photodetector with Self-Powered Cu@GaN Nanowires Network

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摘要

Undersea optical communication (UOC) has been considered as the mostpotential next-generation underwater wireless communication technology forocean exploration. Photodetector is the essential component in UOC system,however, the harsh undersea environment like light attenuation and seawatercorrosivity restricts the applications of conventional photodetectors. Herein,a novel natural-electrolyte self-powered photoelectrochemical (PEC) photodetectorbased on core-shell structured Cu@GaN nanowires (NWs) networkis demonstrated and direct utilization of seawater. High quality GaN shellis encapsulated on the Cu NWs network through Ga-coating and high temperaturenitridation processes. A Schottky junction along radial direction hasformed at the Cu/GaN interface due to the outward diffusion of Cu into theGaN layer. Such a structure provides narrowed band detection on blue light aswell as efficient carrier separation. A self-powered undersea PEC photodetectoris designed with a mini-pipes connected device chamber, which allows directindrawing of seawater and blue channel light communication (458 nm). Thisphotodetector works stably for UOC in both shallow and deep-sea conditionsin Pacific Ocean area. It shows a high responsivity up to 5.04 mA W~（?1） and rapidresponse time of 0.68 ms. This photodetector can be easily integrated to marineequipment without waterproof packaging for the future energy-saving UOC.

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来源
《Advanced functional materials》 |2023年第29期|2302872.1-2302872.11|共11页
作者
Han Chen; Zefeng Lin; Hongwei QiuYan TangShini YangJingtian ZhaoQicheng ZhouJun WangGuozhen LiuYang ZhaoDongsheng ChenZhibin LuoFeiya XuShengli HuangXiaohong ChenShuping LiDuanjun CaiJunyong Kang;
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作者单位

Fujian Key Laboratory of Semiconductor Materials and Applications CI center of OSED College of Physical Science and Technology Xiamen University Xiamen 361005, P. R. China,School of Mechanical EngineeringShanghai Jiao Tong UniversityShanghai 200240, P. R.;

Fujian Key Laboratory of Semiconductor Materials and ApplicationsCI center of OSEDCollege of Physical Science and TechnologyXiamen UniversityXiamen 361005, P. R. China;

College of Ocean and Earth SciencesXiamen UniversityXiamen 361005, P. R. ChinaFujian Key Laboratory of Semiconductor Materials and ApplicationsCI center of OSEDCollege of Physical Science and TechnologyXiamen UniversityXiamen 361005, P. R. China;

Xiamen University Affilicated Keji High SchoolXiamen 361005, P. R. China;

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正文语种英语
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copper nanowires; photodetectors; self-powered devices; underwater optical communication;

High-Responsivity Natural-Electrolyte Undersea Photoelectrochemical Photodetector with Self-Powered Cu@GaN Nanowires Network

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