Photoluminescence characteristics of Mn- and Pr-doped ZnS nanoparticles optically annealed with UV illumination

被引：16

作者：

Lee, JW

Cho, K

Kim, H

Kim, JH

Park, B

Noh, T

Kim, SH

Kim, S ^{[1
]}

机构：

[1] Korea Univ, Dept Elect Engn, Seoul 136701, South Korea

[2] Korea Univ, Inst Nanosci, Seoul 136701, South Korea

[3] Samsung Adv Inst Technol, Elect Mat Lab, Suwon 440600, South Korea

[4] Korea Univ, Dept Biol & Chem Engn, Seoul 136701, South Korea

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS | 2005年 / 44卷 / 10期

关键词：

ZnS nanoparticles; doped nanoparticles; photoluminescence; optical annealing; UV irradiation; luminescence enhancement;

D O I：

10.1143/JJAP.44.7694

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Undoped, Mn-doped, Pr-doped, and Mn- and Pr-codoped ZnS nanoparticles were synthesized by a wet chemical method, and these nanoparticles were optically annealed in air or vacuum. In the photoluminescence (PL) spectra of the optically annealed nanoparticles, a sulfur-vacancy-related PL band at around 420 nm, a PL band associated with the T-4(1) -> (6)A(1) transition of Mn2+, and PL peaks associated with Pr-related complexes were investigated during optical annealing. The integrated PL intensities for the nanoparticles annealed in air increased more markedly with the optical annealing time than those for the nanoparticles annealed in vacuum. This increase may be explained by the photooxidation of the surface, the enhancement of the crystal quality, and the gradual diffusion of luminescent ions into the crystal lattice.

引用

页码：7694 / 7697

页数：4

共 17 条

[11] Blue emitting ACPEL devices based upon ZnS:Tm,Li [J].