Hydrothermal synthesis of ZnSe:Mn quantum dots and their optical properties

Hisaaki Nishimura; Yuxin Lin; Masayuki Hizume; Taichi Taniguchi; Naoteru Shigekawa; Tomomi Takagi; Susumu Sobue; Shoichi Kawai; Eiichi Okuno; DaeGwi Kim

doi:10.1063/1.5085814

AIP Advances (Feb 2019)

Hydrothermal synthesis of ZnSe:Mn quantum dots and their optical properties

Hisaaki Nishimura,
Yuxin Lin,
Masayuki Hizume,
Taichi Taniguchi,
Naoteru Shigekawa,
Tomomi Takagi,
Susumu Sobue,
Shoichi Kawai,
Eiichi Okuno,
DaeGwi Kim

Affiliations

Hisaaki Nishimura: Department of Applied Physics, Graduate School of Engineering, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
Yuxin Lin: Department of Applied Physics, Graduate School of Engineering, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
Masayuki Hizume: Department of Applied Physics, Graduate School of Engineering, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
Taichi Taniguchi: Department of Applied Physics, Graduate School of Engineering, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
Naoteru Shigekawa: Department of Applied Physics, Graduate School of Engineering, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan
Tomomi Takagi: Advanced Research and Innovation Center, DENSO Corporation, 500-1, Minamiyama, Komenoki-cho, Nisshin-shi, Aichi 470-0111, Japan
Susumu Sobue: Advanced Research and Innovation Center, DENSO Corporation, 500-1, Minamiyama, Komenoki-cho, Nisshin-shi, Aichi 470-0111, Japan
Shoichi Kawai: Advanced Research and Innovation Center, DENSO Corporation, 500-1, Minamiyama, Komenoki-cho, Nisshin-shi, Aichi 470-0111, Japan
Eiichi Okuno: Advanced Research and Innovation Center, DENSO Corporation, 500-1, Minamiyama, Komenoki-cho, Nisshin-shi, Aichi 470-0111, Japan
DaeGwi Kim: Department of Applied Physics, Graduate School of Engineering, Osaka City University, 3-3-138, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan

DOI: https://doi.org/10.1063/1.5085814
Journal volume & issue: Vol. 9, no. 2
pp. 025223 – 025223-7

Abstract

Read online

Water-soluble Mn2+-doped ZnSe quantum dots (QDs) were synthesized using a hydrothermal method. The characteristics of the precursor solutions greatly affected the photoluminescence (PL) properties of the ZnSe:Mn QDs. In QDs synthesized with alkaline precursor solutions, a PL band originating from the intra-3d shell transition of Mn2+ is clearly observed, indicating that Mn2+ ions are thoroughly doped inside the ZnSe QDs. The PL quantum yield of the ZnSe:Mn QDs synthesized under the optimum conditions reached 20%. By introducing a ZnS shell at the surface of the ZnS:Mn QDs, the PL properties were improved and the PL quantum yield was further increased to 30%.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

About the journal