chemical etching
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2022 ◽  
Vol 142 ◽  
pp. 106483
Author(s):  
Nguyen Van Minh ◽  
Dang Van Hieu ◽  
Pham Van Tuan ◽  
Nguyen Duc Dung ◽  
Chu Manh Hoang

2022 ◽  
Vol 138 ◽  
pp. 106291
Author(s):  
Fairouz Ghisani ◽  
Kristi Timmo ◽  
Mare Altosaar ◽  
Valdek Mikli ◽  
Mati Danilson ◽  
...  

Author(s):  
Osamu Ueda ◽  
Makoto Kasu ◽  
Hirotaka Yamaguchi

Abstract This paper reviews the status of characterization of defects in β-Ga2O3 crystals grown by edge-defined film-fed growth and hydride vapor phase epitaxy using chemical etching, scanning electron microscopy, focused ion beam scanning ion microscopy, X-ray topography (XRT), and transmission electron microscopy (TEM). The observed defects are classified into four types: dislocations, stacking faults (SFs), twins, and plate-like nanovoids (PNVs). First, we present the detailed characterization of dislocations in the crystal by chemical etching, XRT, and TEM, and discuss possible slip systems. Next, we describe XRT analyses of two types of SFs: SFs 1 lying on the (2 ̅01) plane and SFs 2 on the (111) and (11 ̅1) planes. We describe the results for twins found in crystals via high-resolution TEM and electron diffraction analysis, and PNVs corresponding to etch pits on the (010) plane. Finally, we discuss possible generation mechanisms of the defects and their influence on device characteristics.


Author(s):  
J. L. Weyher ◽  
D. H. van Dorp ◽  
T. Conard ◽  
G. Nowak ◽  
I. Levchenko ◽  
...  

ACS Omega ◽  
2022 ◽  
Author(s):  
Chenyu Bian ◽  
Bingchang Zhang ◽  
Zhenghe Zhang ◽  
Hui Chen ◽  
Dake Zhang ◽  
...  

Author(s):  
Anja Rietig ◽  
Thomas Langner ◽  
Jörg Acker

The stoichiometry of the wet chemical etching of silicon in concentrated binary and ternary mixtures of HF, HNO3 and H2SiF6 was comprehensively investigated. A complete quantification of both dissolved and...


2022 ◽  
Vol 275 ◽  
pp. 125217
Author(s):  
Maria A. Surmeneva ◽  
Dmitriy Khrapov ◽  
Konstantin Prosolov ◽  
Maria Kozadayeva ◽  
Andrey Koptyug ◽  
...  

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