Reactive Inorganic Vapor Deposition of Perovskite Oxynitride Films for Solar Energy Conversion
Tao Fang,
Huiting Huang,
Jianyong Feng,
Yingfei Hu,
Qinfeng Qian,
Shicheng Yan,
Zhentao Yu,
Zhaosheng Li,
Zhigang Zou
Affiliations
Tao Fang
Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, China
Huiting Huang
Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, China; College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing 210093, China
Jianyong Feng
Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, China; College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing 210093, China
Yingfei Hu
Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, China; College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing 210093, China
Qinfeng Qian
Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, China; College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing 210093, China
Shicheng Yan
Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, China; College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing 210093, China; Jiangsu Key Laboratory for Nano Technology, Nanjing University, 22 Hankou Road, Nanjing 210093, China
Zhentao Yu
Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, China; College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing 210093, China; Jiangsu Key Laboratory for Nano Technology, Nanjing University, 22 Hankou Road, Nanjing 210093, China
Zhaosheng Li
Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, China; College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing 210093, China; Jiangsu Key Laboratory for Nano Technology, Nanjing University, 22 Hankou Road, Nanjing 210093, China
Zhigang Zou
Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructures, Department of Physics, Nanjing University, 22 Hankou Road, Nanjing 210093, China; College of Engineering and Applied Sciences, Nanjing University, 22 Hankou Road, Nanjing 210093, China; Jiangsu Key Laboratory for Nano Technology, Nanjing University, 22 Hankou Road, Nanjing 210093, China
The synthesis of perovskite oxynitrides, which are promising photoanode candidates for solar energy conversion, is normally accomplished by high-temperature ammonolysis of oxides and carbonate precursors, thus making the deposition of their planar films onto conductive substrates challenging. Here, we proposed a facile strategy to prepare a series of perovskite oxynitride films. Taking SrTaO2N as a prototype, we prepared SrTaO2N films on Ta foils under NH3 flow by utilizing the vaporized SrCl2/SrCO3 eutectic salt. The SrTaO2N films exhibit solar water-splitting photocurrents of 3.0 mA cm-2 at 1.23 V vs. RHE (reversible hydrogen electrode), which increases by 270% compared to the highest photocurrent (1.1 mA cm-2 at 1.23 V vs. RHE) of SrTaO2N reported in the literature. This strategy may also be applied to directly prepare a series of perovskite oxynitride films on conductive substrates such as ATaO2N (A=Ca,Ba) and ANbO2N (A=Sr,Ba).
