Self-powered electrochemical wide-band photodetectors using ZrO2@TiO2 nanorod arrays modified with single-walled carbon nanotubes

Renrong Zheng; Zhen Wang; Na Wang; Zan Ding; Tongxin Jiang; Lifeng Zhang; Shichao Liu; Haisheng San; Xin Li

Journal of Science: Advanced Materials and Devices (Dec 2022)

Self-powered electrochemical wide-band photodetectors using ZrO2@TiO2 nanorod arrays modified with single-walled carbon nanotubes

Renrong Zheng,
Zhen Wang,
Na Wang,
Zan Ding,
Tongxin Jiang,
Lifeng Zhang,
Shichao Liu,
Haisheng San,
Xin Li

Affiliations

Renrong Zheng: Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
Zhen Wang: Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
Na Wang: Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
Zan Ding: Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
Tongxin Jiang: Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China
Lifeng Zhang: China Institute of Atomic Energy, Beijing 102413, China
Shichao Liu: Shanghai Institute of Space Power-Sources, Shanghai 200245, China
Haisheng San: Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China; Shenzhen Research Institute of Xiamen University, Shenzhen 518000, China; Corresponding author. Pen-Tung Sah Institute of Micro-Nano Science and Technology, Xiamen University, Xiamen 361005, China.
Xin Li: China Institute of Atomic Energy, Beijing 102413, China; Corresponding author.

Journal volume & issue: Vol. 7, no. 4
p. 100492

Abstract

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Self-powered broad-band electrochemical photodetectors (ECPDs) based on broadband photoresponse nanostructured composites are low-cost and promising photoelectrochemical (PEC) devices. In this work a TiO2 nanorod array (TNRA) structure modified by the ZrO2 nanoparticles and metallic single-walled carbon nanotubes (m-SWCNTs) was used to prepare the ECPDs for enabling a high performance ultraviolet-visible (UV-VIS) photoresponse. The ECPDs exhibit a high optical sensitivity with an on/off ratio of 1.59 × 105 and an optical responsivity of 158.67 mA/W under ultraviolet radiation (365 nm) without external bias. The lowest detectable intensity of ultraviolet and visible-light irradiance (465 nm) can reach around 0.1 mW/cm2and 0.18 mW/cm2. The enhanced PEC performance can be attributed to the effective separation and transport of carriers in the PEC system by the type-I band alignment of ZrO2@TiO2 structure and the high conductive network of SWCNTs.

Published in Journal of Science: Advanced Materials and Devices

ISSN: 2468-2284 (Print); 2468-2179 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.journals.elsevier.com/journal-of-science-advanced-materials-and-devices

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