The pressure-induced photoconductivity enhancement of black-TiO2

Bingyan Liu; Tianfeng Duan; Songhao Guo; Kejun Bu; Jiabing Luo; Yiming Wang; Junxiu Liu; Wenge Yang; Jun Zhang; Xujie Lü

doi:10.1039/D5CC00043B

The pressure-induced photoconductivity enhancement of black-TiO₂†

Bingyan Liu,^ab Tianfeng Duan,^b Songhao Guo,^bc Kejun Bu,

^b Jiabing Luo,^a Yiming Wang,^b Junxiu Liu,^b Wenge Yang,

^b Jun Zhang

*^a and Xujie Lü

*^b

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* Corresponding authors

^a School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, China
E-mail: zhangj@upc.edu.cn

^b Center for High Pressure Science and Technology Advanced Research (HPSTAR), Shanghai 201203, China
E-mail: xujie.lu@hpstar.ac.cn

^c Center of Micro-Nano System, School of Information Science and Technology, Fudan University, Shanghai 200433, China

Abstract

The pressure-induced enhancement of the optoelectronic properties of black-TiO₂ nanocrystals is presented. The underlying mechanisms are elucidated by comparing the behavior with that of white-TiO₂. The disordered layer in black-TiO₂ contributes to the enhanced photoconductivity, while the crystal structure dominates in relation to photoconductivity variations. Our findings provide valuable insights for gaining a fundamental understanding of black-TiO₂.

This article is part of the themed collection: Chemistry at the Forefront of the Sustainable Energy Transition

Chemical Communications

The pressure-induced photoconductivity enhancement of black-TiO₂†

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The pressure-induced photoconductivity enhancement of black-TiO₂

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