Ag@Sr2TiO4/Bi5O7I heterostructured composite for solar-driven photoelectrochemical analysis

Chechia Hu, Tsz Shin Chen, Chiao Yi Teng, Te Fu Yeh, Yuan Kai Xiao, Hsisheng Teng

研究成果: Article同行評審

2 引文 斯高帕斯(Scopus)

摘要

Plasmonic Ag nanoparticles were photodeposited on the surface of Sr2TiO4 and Bi5O7I to fabricate a photoelectrode for photoelectrochemical measurements. The Ag@Sr2TiO4/Bi5O7I heterostructured composite exhibited extended visible-light absorption, surface plasmonic resonance, improved photocurrent response, decreased film resistance, and increased donor density. The semiconducting properties of these samples, including the conduction and valence band levels, flatband potential, and donor density, were obtained from AC impedance spectra, a Mott-Schottky analysis, and a linear current-potential scan under the illumination of a xenon lamp with an AM1.5 filter to simulate AM 1.5-type solar irradiation. The Mott-Schottky analysis clearly displayed the formation of a p-n junction at the interface of the Ag@Sr2TiO4/Bi5O7I composite, which is advantageous to the electron transfer. Thanks to its interfacial p-n junction and the surface plasmonic resonance effect of Ag on the Ag@Sr2TiO4/Bi5O7I composite, this photoelectrode can serve as a potential candidate for solar-driven photoelectrochemical applications.

原文English
頁(從 - 到)Q70-Q73
期刊ECS Journal of Solid State Science and Technology
7
發行號4
DOIs
出版狀態Published - 2018 一月

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

指紋 深入研究「Ag@Sr<sub>2</sub>TiO<sub>4</sub>/Bi<sub>5</sub>O<sub>7</sub>I heterostructured composite for solar-driven photoelectrochemical analysis」主題。共同形成了獨特的指紋。

引用此