Enhanced photoelectrochemical performance of TiO2 nanorod array films based on TiO2 compact layers synthesized by a two-step method

Yafeng Deng; Zhanhong Ma; Fengzhang Ren; Guangxin Wang

doi:10.1039/c9ra03755a

Enhanced photoelectrochemical performance of TiO₂ nanorod array films based on TiO₂ compact layers synthesized by a two-step method

RSC Adv. 2019 Jul 15;9(38):21777-21785. doi: 10.1039/c9ra03755a. eCollection 2019 Jul 11.

Authors

Yafeng Deng¹, Zhanhong Ma¹, Fengzhang Ren^{1

2}, Guangxin Wang^{1

3}

Affiliations

¹ School of Materials Science and Engineering, Henan University of Science and Technology Luoyang 471023 P. R. China dengyf1111@126.com renfz@haust.edu.cn.
² Henan Collaborative Innovation Centre of Non-Ferrous Generic Technology Luoyang 471023 P. R. China.
³ Henan Key Laboratory of Non-Ferrous Materials Science & Processing Technology Luoyang 471023 P. R. China.

Abstract

An innovative two-step method perfectly prepared TCLs with different thicknesses, and then the TNA films based on TCLs were successfully prepared. The effects of different thicknesses of TCLs on the morphology and photoelectrochemical performance of TNA films were investigated. The results indicated that TCLs with appropriate thickness could effectively improve the morphology and photoelectrochemical performance of TNA films. Compared with the TNA films based on TCL₅, TCL₁₀ and TCL₃₀, the TNA film based on TCL₂₀ exhibited more ideal and comprehensive photoelectrochemical performance. Moreover, dye-sensitized solar cells (DSSCs) based on this TNA film achieved the highest J _sc (10.2054 mA cm^-2), V _oc (0.5737 V), PCE (3.3%) and P _out (3.31 mW cm^-2).