Photoluminescence of Eu2+ doped ZnS nanocrystals

被引：16
|
作者：
Liu, SM [1 ]
Guo, HQ
Zhang, ZH
Liu, FQ
Wang, ZG
机构：
[1] Chinese Acad Sci, Inst Semicond, Lab Semicond Mat Sci, Beijing 100083, Peoples R China
[2] Peking Univ, Coll Chem & Mol Engn, State Key Lab Rare Earth Mat Chem & Applicat, Beijing 100871, Peoples R China
来源：
CHINESE PHYSICS LETTERS | 2000年 / 17卷 / 08期
关键词：
D O I：
10.1088/0256-307X/17/8/023
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Eu2+ doped ZnS nanocrystals exhibit new luminescence properties because of the enlarged energy gap of nanocrystalline ZnS host due to quantum confinement effects. Photoluminescence emission at about 520 nm from Eu2+ doped ZnS nanocrystals at room temperature is investigated by using photoluminescence emission and excitation spectroscopy. Such green emission with long lifetime (ms) is proposed to be a result of excitation, ionization, carriers recapture and recombination via Eu2+ centers in nanocrystalline ZnS host.
引用
收藏
页码：609 / 611
页数：3
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