Photoluminescence property of nano-composite phases of β-FeSi2 nanocrystals embedded in SiO2

Tatsuya Nakamura; Takahide Tatsumi; Kosuke Morita; Hiroyuki Kobayashi; Yuya Noguchi; Yuki Kawakubo; Yoshihito Maeda

doi:10.56646/jjapcp.3.0_011106

International Conference and Summer School on Advanced Silicide Technology 2014

Session ID : 011106

DOI https://doi.org/10.56646/jjapcp.3.0_011106

Conference information

Host: The Japan Society of Applied Physics

Name : International Conference and Summer School on Advanced Silicide Technology 2014

Location : Tokyo, Japan

Date : July 19, 2014 - July 21, 2014

Light emission and detection materials

Photoluminescence property of nano-composite phases of β-FeSi₂ nanocrystals embedded in SiO₂

Tatsuya Nakamura, Takahide Tatsumi, Kosuke Morita, Hiroyuki Kobayashi, Yuya Noguchi, Yuki Kawakubo, Yoshihito Maeda

Author information

Tatsuya Nakamura
Department of Computer Science and Electronics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan
Takahide Tatsumi
Department of Computer Science and Electronics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan
Kosuke Morita
Department of Computer Science and Electronics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan
Hiroyuki Kobayashi
Department of Computer Science and Electronics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan
Yuya Noguchi
Department of Computer Science and Electronics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan
Yuki Kawakubo
Department of Computer Science and Electronics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan
Yoshihito Maeda
Department of Computer Science and Electronics, Kyushu Institute of Technology, Iizuka, Fukuoka 820-8502, Japan

CONFERENCE PROCEEDINGS OPEN ACCESS

Details

Abstract

We have investigated photoluminescence (PL) behaviors of nano-composite phase of β-NCs embedded in SiO₂ (β-NCs/SiO₂). The inhomogeneous spectra consisting of the A, B, and C emission bands were observed. PL enhancement also was confirmed in comparison with β-NCs/Si. Under high pumping rate, we observed PL spectra near room temperatures (~270 K). This fact means that oxidation of the nano-composite phase can contribute to reduction of thermal quenching, which may come from increase of band offsets around β-NCs.

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