Luminescence of nanocrystalline ZnS:Pb2+

A.A. Bol, A. Meijerink

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

Abstract

Nanocrystalline ZnS:Pb2+ is synthesized via a precipitation method. The luminescence is studied and the influence of the size of the nanocrystals on the luminescence properties is investigated. Nanocrystalline ZnS:Pb2+ shows a white emission under UV excitation. At least two luminescence centers are involved. One center is identified as a Pb2+ ion located on a regular Zn2+ site and gives a red emission under 480 nm excitation. The luminescence properties of this emission are characteristic for transitions on Pb2+ ions. The other centers are not as well defined and give a broad green emission band under 380 nm excitation and also show luminescence properties typically observed for Pb2+. The green emission probably originates from a Charge-transfer like D-band emission of Pb2+ in ZnS close to a defect (e.g. an S2- vacancy or an O2- ion on an S2- site). A relation between the temperature quenching of the emissions and the band gap is observed and indicates that photoionization occurs.

Original languageEnglish
Title of host publicationLuminescence and luminescent materials : symposium held April 17-19, 2001, San Francisco, California, U.S.A.
EditorsP.C. Schmidt, K.C. Mishra, B. Di Bartolo
Place of PublicationWarrendale
PublisherMaterials Research Society
Number of pages6
ISBN (Print)1-55899-603-6
Publication statusPublished - 1 Dec 2001
Externally publishedYes
Event2001 Luminescent and Lumiescent Materials Symposium - San Francisco, United States
Duration: 17 Apr 200119 Apr 2001

Publication series

NameMaterials Research Society Symposium - Proceedings
PublisherMaterials Research Society
Volume667
ISSN (Print)0272-9172

Conference

Conference2001 Luminescent and Lumiescent Materials Symposium
CountryUnited States
CitySan Francisco
Period17/04/0119/04/01

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