Visible-light photoelectrochemical photodetector based on In-rich InGaN/Cu2O core-shell nanowire p–n junctions

Visible-light photoelectrochemical photodetector based on In-rich InGaN/Cu2O core-shell nanowire p–n junctions

n-InGaN/p-Cu2O core-shell nanowire (NW) p–n junctions enable efficient self-powered photoelectrochemical photodetectors (PEC PDs) in the visible. The photocurrent density under one-sun illumination is enhanced by 8 times compared to that of bare InGaN NW PEC PDs due to maximized photocarrier separat...

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Veröffentlicht in:Applied physics letters 2022-03, Vol.120 (11)
Hauptverfasser: Wang, Jialin, Song, Jiaxun, Qin, Ling, Peng, Yingchun, Nötzel, Richard
Format: Artikel
Sprache:eng
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Applied physics
Copper oxides
Electric fields
Electrical junctions
Illumination
Nanowires
P-n junctions
Photoelectric effect
Photometers
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container_issue 11
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container_title Applied physics letters
container_volume 120
creator Wang, Jialin
Song, Jiaxun
Qin, Ling
Peng, Yingchun
Nötzel, Richard
description n-InGaN/p-Cu2O core-shell nanowire (NW) p–n junctions enable efficient self-powered photoelectrochemical photodetectors (PEC PDs) in the visible. The photocurrent density under one-sun illumination is enhanced by 8 times compared to that of bare InGaN NW PEC PDs due to maximized photocarrier separation in the built-in electric field of the p–n junction. The responsivity reaches 173 μA/W under one-sun illumination. The response times of 30–40 ms are among the shortest achieved for PEC PDs. Together with the long-time stability and reusability, a robust, easy to fabricate, and easy to operate self-powered PEC PD is introduced.
doi_str_mv 10.1063/5.0082509
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subjects Applied physics
Copper oxides
Electric fields
Electrical junctions
Illumination
Nanowires
P-n junctions
Photoelectric effect
Photometers
title Visible-light photoelectrochemical photodetector based on In-rich InGaN/Cu2O core-shell nanowire p–n junctions
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