[15p-P10-1~21] 13.9 Optical properties and light-emitting devices

[15p-P10-3] Hydrothermal synthesis of wavelength conversion nanoparticles of ZnSe:Mn/ZnS

〇Tomomi Takagi¹, Taichi Taniguchi², Susumu Sobue¹, Shoichi Kawai¹, Jun Hasegawa¹, Kim DaeGwi² (1.DENSO CORPORATION, 2.Dept. Appl. Phys., Osaka City University)

Keywords:nanoparticle, semiconductor, quantum

We have developed the synthetic methods of semiconductor nanoparticles of ZnSe:Mn/ZnS.These nanoparticles have the Mn-doping and the core/shell structure. Our approach to two characteristics of semiconductor nanoparticles is based on the hydrothermal synthesis.As a result, a PL band which originates from the intra-cation transition, so-called d-d transition of tetrahedrally coordinated Mn²⁺ ions, is clearly observed at ~600nm, indicating that Mn²⁺ ions are doped inside ZnSe QDs. Furthermore, the core/shell structure doubled quantum efficiency. The quantum efficiency of ZnSe:Mn/ZnS was 31%.