›› 2013, Vol. 26 ›› Issue (9): 50-.

• Articles • Previous Articles     Next Articles

Influence of Silicon Surface Roughness on the Interface States

CHEN Shuhua,WU Hua,ZHOU Hongyi,CUI Wenkai,MA Yunfei,GUO Xia   

  1. (School of Electronic Information and Control Engineering,Beijing University of Technology,Beijing 100124,China)
  • Online:2013-09-15 Published:2013-09-25

Abstract:

The sub-surface damage layer generated by grinding and polishing may effect the carrier lifetime and interface states of the silicon surface.Several samples for different roughness are fabricated by mechanical thinning,mechanical polishing and chemical mechanical polishing (CMP) processing in this paper.The Fourier transform infrared transmission spectroscopy and C-V test are used to analyze the samples.The results show that the higher the roughness of the silicon surface is,the lower the infrared transmittance and the higher density of interface states will be.

Key words: roughness;interface states;fourier transform infrared transmission spectrum;C V test

CLC Number: 

  • TN305.2