2022 International Conference on Solid State Devices and Materials

講演情報

Oral Presentation

11: Advanced Materials: Synthesis / Crystal Growth / Characterization

[B-2] Wide Bandgap Materials

2022年9月27日(火) 14:00 〜 15:45 102 (1F)

Session Chair: Shingo Ogawa (Toray Res. Center, Inc.), Takuya Hoshi (NTT Device Technology Lab.)

15:15 〜 15:30

[B-2-04] Importance of dissolving source precursor of Ga(C5H7O2)3 with HCl in mist CVD for α-Ga2O3 growth

〇Rie Yamada1, Atsushi Sekiguchi1, Takeyoshi Onuma1, Tohru Honda1, Tomohiro Yamaguchi1 (1. Univ. of Kogakuin (Japan))

Presentation style: Online

https://doi.org/10.7567/SSDM.2022.B-2-04

We dissolved the source precursor of Ga(C5H7O2)3
with either hydrochloric acid (HCl) or nitric acid (HNO3)
in the mist chemical vapor deposition (mist CVD) growth
of α-Ga2O3 films on α-Al2O3 substrates. Enough film
thickness was obtained when HCl was used as a source
solvent, while less growth occurred when HNO3 was used.
With the increase of HCl concentration, it was observed
that the film thickness as well as grain size tended to increase. These results indicate that chloride ion plays an
important role in the mist CVD growth of α-Ga2O3.

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