Surface Processes in Laser-Induced Etching of Silicon Studied by X-Ray Photoelectron Spectroscopy
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		    SURFACE PROCESSES IN LASER-INDUCED ETCHING OF SILICON STUDIED BY X-RAY PHOTOELECTRON SPECTROSCOPY
 
 MASATAKA HIROSE AND TSUYOSHI OGURA Research Center for Integrated
 
 Systems,
 
 Hiroshima
 
 University
 
 Higashihiroshima 724, Japan
 
 ABSTRACT A silicon surface exposed to NF3 gas was irradiated with an
 
 ArF
 
 excimer laser beam. The reaction products on the surface and their chemical bonding features
 
 were studied by
 
 in-situ x-ray photoelectron spectroscopy
 
 at each step of the photochemical etching. It was found that SiFX (i		
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