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Tên Synthesis and optical properties of CdS:Mn2+ and CdS:Mn2+/ZnS core/shell quantum quantum dost
Lĩnh vực Vật Lý
Tác giả Vũ Thị Kim Liên, Chu Việt Hà, Triệu Thị Thu Thuỷ, Vũ Thị Hồng Hạnh, Phạm Thái Cường, Lê Tiến Hà, Nguyễn Xuân Ca, Phạm Thu Nga
Nhà xuất bản / Tạp chí ASEAN Journal on Science & technology for Development Tập 1 Số 24 Năm 2007
Tóm tắt nội dung

In this work, we report on the novel results of photoluminescent properties of Mn - doped CdS and CdS/ZnS semiconductor nanocrystals. There is noticeable increase of the PL emission intensity and subsequent photostability in Mn-doped CdS/ZnS core-shell nanocrystal samples compared with CdS:Mn nanocrystal samples without the ZnS shell. This shows effective passivation of CdS suface states by the ZnS shell. The photoluminescent emission corresponding to internal Mn2+ transition (4T1 - 6A1) at about 585 nm in the CdS:Mn/ZnS nanocrystals with high concentrations of Mn are observed quite clearly beside the intrinsic emission of CdS nanocrystals. The results may lead to application in electroluminescent displays and biomarkers.