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http://dx.doi.org/10.4191/KCERS.2003.40.9.886

Surface Morphology and Characteristics of LiNbO3 Single Crystal by Helicon Wave Plasma Etching  

박우정 (성균관대학교 신소재공학과)
양우석 (전자부품연구원 광부품센터)
이한영 (전자부품연구원 광부품센터)
윤대호 (성균관대학교 신소재공학과)
Publication Information
Abstract
The etching characteristics of a LiNbO$_3$ single crystal have been investigated using helicon wave plasma source with bias power and the mixture of CF$_4$, HBr, SF$_{6}$ gas parameters. The etching rate of LiNbO$_3$ with etching parameters was evaluated by surface profiler. The etching surface was evaluated by Atomic Force Microscopy (AFM). The surface morphology of the etched LiNbO$_3$ changed with bias power and the mixture of CF$_4$/Ar/Cl$_2$, HBr/Ar/Cl$_2$, and SF$_{6}$/Ar/Cl$_2$ parameters. Optimum etching conditions, considering both the surface flatness and etch rate were determined.
Keywords
$LiNbO_3$; Dry etching; Helicon wave plasma; Surface roughness;
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Times Cited By KSCI : 2  (Citation Analysis)
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