期刊
INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE
卷 10, 期 9, 页码 7409-7422出版社
ESG
关键词
Bi2Te3; DMSO; Electrodeposition; back contact
资金
- FONDECYT (Fondo de Desarrollo Cientifico y Tecnologico, Chile) [3031451]
- Pontificia Universidad Catolica de Valparaiso (Chile)
We report the pulsed electrodeposition (PED) of Bi2Te3 thin films from TeCl4 and Bi(NO3)(3) precursors dissolved in dimethylsulfoxide (DMSO) onto SnO2:F coated glasses (FTO) and CdTe/FTO substrates. Results of a detailed set of chronoamperometric experiments allowed us to simulate the corresponding experimental j/t transients through their fitting with different possible contributions involved in the nucleation-growth mechanisms (NGMs) of the Bi2Te3 phase. From this information it was possible to employ a set of potential/time step programs intended to select those resulting in adherent good quality thin films. AFM and SEM micrographs exhibited complete substrate coverage whereas EDX analysis gave Bi/Te ratios close to the expected stoichiometry. High-resolution X-ray diffraction analysis showed that the films were grown in the trigonal phase without the presence of other phases. From electrochemical impedance spectroscopy measurements it was possible to establish the n-type conductivity of the films which was further confirmed by photoelectrochemical experiments. Results open the possibility of using electrodeposited Bi2Te3 thin films instead of copper as back contact in CdTe based photovoltaic solar cells.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据