A voltammetric study on the atomic layer deposition of selenium and antimony on platinum electrode
The present paper is a detailed study on the atomic layer deposition of selenium and antimony on platinum electrode by electrochemical atomic layer epitaxy(EC-ALE).Voltammetry and coulometry experiments were performed in this work to investigate the electrochemical behaviours of selenium and antimony on the polycrystalline platinum electrode.The results show that on Pt substrates Se ions can directly form a UPD layer with full coverage without the formation of bulk Se.The total Faradaic charge of the UPD Se is calculated to be 924 μC cm-2.A SbO+species adsorbed Pt electrode is obtained by introducing the fresh Sb solution continuously into the electrochemical cell.The irreversibly adsorbed SbO+species begin to desorb when the potential is more positive than 0.50 V(vs Ag/AgCl).The reduction potential of irreversibly adsorbed SbO+to metallic Sb atoms amounts to 0.11 V(vs Ag/AgCl).After the irreversibly adsorbed SbO+species are reduced to metallic Sb,Sb atoms can be further deposited onto this Sb-modified Pt electrode in the way of UPD to increase the coverage of the metallic Sb monolayer.The UPD potential of antimony on the Sb-modified Pt electrode amounts to 0.07 V(vs Ag/AgCl).Finally,a Sb monolayer with the depositing charge 981 μC cm-2 is obtained.Now the alternative deposition of Sb-Se compound by EC-ALE method is under study.
Sb2Se3 Electrochemistry deposition EC-ALE Atomic layer Absorption
Yuan CHEN Huicheng HUANG Zhishun WEI Ying CHANG Annie PRADEL Pascal BOULET Marie-Christine RECORD
Hubei Provincial Key Laboratory of Green Materials for Light Industry,Hubei University of Technology CNRS,ICGM UMR 5253,ChV,CC1503,Université de Montpellier,F-34095,France Aix-Marseille Univ,CNRS,MADIREL,Marseille,France Aix-Marseille Univ,Université de Toulon,CNRS,IM2NP,Marseille,France
国际会议
武汉
英文
219-228
2018-08-21（万方平台首次上网日期，不代表论文的发表时间）