2022 International Conference on Solid State Devices and Materials

講演情報

Oral Presentation

05: Photonics: Devices / Integration / Related Technology

[A-2] New Materials and Platforms for Photonics

2022年9月27日(火) 14:00 〜 15:30 101 (1F)

Session Chair: Xuejun Xu (NTT Corp.), Ueli Koch (ETH Zurich)

15:00 〜 15:15

[A-2-04] Controllability of Luminescence Wavelength from GeSn Wires Fabricated by Laser Zone Melting on Quartz Substrates

〇Takayoshi Shimura1, Ryoga Yamaguchi1, Naoto Tabuchi1, Masato Kondo1, Mizuki Kuniyoshi2, Takuji Hosoi3, Takuma Kobayashi1, Heiji Watanabe1 (1. Osaka Univ. (Japan), 2. ULVAC-Osaka Univ. Joint Res. Lab. for Future Tech. (Japan), 3. Kwansei Gakuin Univ. (Japan))

Presentation style: On-site (in-person)

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

We examined the effects of laser scan speed and power on the Sn fraction and crystallinity of GeSn wires fabricated by laser zone melting on quartz substrates. The Sn fraction increased from 1 to 3.5% with the increase in the scan speed from 5 to 100 um/s, corresponding to luminescence wavelength from 1770 to 2070 nm. This result can be understood as the scan speed dependence of the non-equilibrium degree during crystal growth. The increase in laser power reduced the Sn fraction and caused blue shift of luminescence wavelength. We discuss these phenomena based on the growth kinetics of zone melting.

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