한국해양대학교

Detailed Information

Metadata Downloads

MOD법에 의해 합성한 Willemite(Zn_(2)SiO_(4):Mn) 형광체의 발광 특성

Title
MOD법에 의해 합성한 Willemite(Zn_(2)SiO_(4):Mn) 형광체의 발광 특성
Alternative Title
Photoluminescent Properties of Willemite(Zn_(2)SiO_(4):Mn)Phosphors Prepared by the MOD Process
Author(s)
이선길
Publication Year
2001
Publisher
한국해양대학교 대학원
URI
http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002173756
http://repository.kmou.ac.kr/handle/2014.oak/8351
Abstract
Willemite green phosphor powders have been prepared by metallo -organic decomposition(MOD) method and the photoluminescence and crystalline properties were studied as a function of both the firing temperature(800℃∼1100℃) and the concentration of Mn activator(4mol% ∼12mol%). Under 254nm excitation sources, the emission intensity of the phosphors was increased with increasing firing temperatures from 800℃ to 1000℃. From the XRD analysis, the powders heat treated above 1000℃ showed Willemite crystal structure. The maximum emission intensity was obtained for the phosphors with 8 mol% of Mn content heat treated at 1000℃. The concentration quenching was occurred at the Mn concentration above 10mol%. The phosphor particles showed almost spherical shapes with the average size of around 0.4∼0.5㎛ by the SEM morphology.
Appears in Collections:
재료공학과 > Thesis
Files in This Item:
000002173756.pdf Download

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse