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电化学(中英文) ›› 2002, Vol. 8 ›› Issue (2): 134-138. 

• 研究论文 • 上一篇    下一篇

预处理对多孔硅形成过程的影响(英文)

程璇,罗广丰   

  1. 厦门大学化学系固体表面物理化学国家重点实验室,厦门大学化学系固体表面物理化学国家重点实验室 福建厦门361005 ,福建厦门361005
  • 收稿日期:2002-05-28 修回日期:2002-05-28 出版日期:2002-05-28 发布日期:2002-05-28

Effect of Precondition on Porous Silicon Formation

CHENG Xuan * , LUO Guang_feng   

  1. (Dept.of Chem., State Key Lab. for Phys. Chem. of Solid Surfaces, Xiamen Univ., Xiamen 361005,China
  • Received:2002-05-28 Revised:2002-05-28 Published:2002-05-28 Online:2002-05-28

摘要: 本工作初步探讨了开路电位下对硅片进行预处理时多孔硅的形成过程 .电化学极化实验、扫描电镜和拉曼谱学的研究表明 ,预处理可以加速硅 /溶液界面上的化学或电化学反应 ,从而加快多孔硅的生长过程 ,最终导致光致发光的光谱红移 .多孔硅的厚度随预处理时间的增长而减小

关键词: 多孔硅, 光致发光

Abstract: In this work, effect of precondition on porous silicon formation was investigated by performing electrochemical polarization measurements. The surface morphologies and optical properties of the samples were also studied by scanning electron microscopy (SEM) and Raman spectrometer. It was demonstrated that precondition enhanced the chemical/electrochemical reactions occurred at Si/solution interface and the growth of porous silicon, which ultimately resulted in a red shift in photoluminescence. However, the thickness of porous silicon decreased with the increase of precondition time. More broad bands were observed with prolonged precondition.

Key words: Porous silicon, Photoluminescence, Precondition

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