期刊论文详细信息
Bulletin of Materials Science
Etching of GaAs substrates to create As-rich surface
关键词: Etching;    semi-insulating;    XPS spectrum.;   
学科分类:材料工程
来源: Indian Academy of Sciences
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【 摘 要 】

Several different cleaning procedures for GaAs (100) substrates are compared using X-ray photoelectron spectroscopy and optical microscopy. This work emphasizes the effect of the last etching step: using either HCl, HF–ethanol (5%) or static deionized water after HCl cleaning. All the procedures except HCl solution (1 : 1) produce an As-rich surface. Also, none of the etchants except HF–ethanol solution produce Ga or As-rich (oxide free) surfaces. Optical microscopic study shows different etch pits produced due to etching in different solutions.

【 授权许可】

CC BY   

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