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

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

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

Author(s) -

Hisaaki Nishimura,

Yuxin Lin,

Masayuki Hizume,

Taichi Taniguchi,

Naoteru Shigekawa,

Tomomi Takagi,

Susumu Sobue,

Shoichi Kawai,

Eiichi Okuno,

DaeGwi Kim

Publication year - 2019

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.5085814

Subject(s) - photoluminescence , quantum dot , quantum yield , hydrothermal circulation , hydrothermal synthesis , doping , materials science , yield (engineering) , ion , shell (structure) , nanotechnology , chemical engineering , inorganic chemistry , chemistry , optoelectronics , fluorescence , physics , optics , metallurgy , composite material , engineering , organic chemistry

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%.

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