A comparative electrochemical investigation of silicon nanowires formation via metal-catalyzed elect

• 作 者: LIU Lin
• 机 构: Beijing Key Laboratory of Energy Conversion and Storage Materials, Beijing Normal University,Key Lab
• 出 处: Science China(Technological Sciences)
• 发表日期: 2015年02期
• 关键词: electroless cathodic etching systematically coated catalyzed branches doping Fig

In this study,the electrochemical behavior of monocrystalline bare Si and Ag-coated Si in hydrofluoric acid(HF)solutions with and without hydrogen peroxide(H2O2)was systematically tested with an electrochemical technique.By analyzing the polarization curves,the corrosion processes were quantified and the etchants which govern the formation of silicon nanowires(Si NWs)were determined.It was discovered that both H2O2 and Ag enhanced the reduction reactions,irrespective of the conductivity type and doping concentration of Si.It is believed that the formation of Si NWs via Metal-Catalyzed Electroless Etching is a process controlled by cathodic reduction reactions.

In this study, the electrochemical behavior of monocrystalline bare Si and Ag-coated Si in hydrofluoric acid (HF) solutions with and without hydrogen peroxide (H2O2) was systematically tested with an electrochemical technique. The analysis of polarization curves, the corrosion processes were quantified and the etchants which govern the formation of silicon nanowires (Si NWs) were determined. It was discovered that both H2O2 and Ag enhanced the reduction reactions, irrespective of the conductivity type and doping concentration of Si.It is believed that the formation of Si NWs via Metal-Catalyzed Electroless Etching is a process controlled by cathodic reduction reactions.