Photoelectrochemical Behavior of Electrodeposited CoSe Thin Films

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概要

• 論文の詳細を見る

• Cobalt selenide (CoSe) thin films were prepared by electrodeposition and characterized for their structural, morphological, compositional and photoelectrochemical properties. The electrodeposited film exhibits a compact and homogeneous morphology and a hexagonal CoSe structure. It shows a Se-rich bulk composition and p-type bulk conductivity, but a Se-poor surface composition and n-type surface conductivity. These properties lead to a small photocurrent and a low photovoltage, and large difference in flat band potential obtained from photocurrent--potential and Mott--Schottky tests, but are advantageous for construction of heterojunction solar cells due to the formation of a buried homojunction. The composition evolution during electrodeposition has also been concluded.

• 2011-07-25

著者

• LAI Yanqing

  School of Materials Science and Engineering, Central South University

• YANG Jia

  School of Materials Science and Engineering, Central South University

• LI Jie

  School of Electronic and Information Engineering, South China University of Technology

• WANG Bo

  School of Computer Science and Technology, Tianjin University

• Liu Fangyang

  School of Materials Science and Engineering, Central South University, Changsha 410083, China

• Liu Yexiang

  School of Materials Science and Engineering, Central South University, Changsha 410083, China

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