loading

Influence of reaction time on optical property of ZnS:Mn nanoparticles synthesized by a hydrothermal method / Bui, Hong Van

Tác giả : Bui, Hong Van

Nhà xuất bản : H. : ĐHQGHN

Năm xuất bản : 2017

Tùng thư : Journal of Mathematics- Physics

Chủ đề : 1. Nanoparticles. 2. photoluminescence. 3. photoluminescence excitation. 4. Article.

Thông tin chi tiết

Tóm tắt :

ZnS:Mn (CMn = 5 %mol) nanoparticles have been synthesized by a hydrothermal method from solutions of Zn(CH3COO)2 0.1 M, Na2S2O3 0.1 M and Mn(CH3COO)2 0.01 M at 220oC for different reaction time. The result showed that increasing reaction time from 3 to 30h almost does not change cubic crystalline structure, peak positions attributed to Mn2+ ions at 585 nm in photoluminescence spectra and 392, 430, 463, 468, 492 nm in photoluminescence excitation spectra when monitoring the 585 nm band of ZnS:Mn nanoparticles but only slight increases lattice constant, the average particle size and changing their intensity. As increasing the reaction time from 3 to 10h, intensity of bands attributed to Mn2+ ions also increase, reaches the maximum at 15h and then decreases as increasing reaction time to 30 h. Cause of these phenomena have been investigated and reported.

 Thông tin dữ liệu nguồn

 Thư viện  Ký hiệu xếp giá  Dữ liệu nguồn
Đại học quốc gia Hà Nội
https://repository.vnu.edu.vn/handle/VNU_123/55390