@inproceedings{8cf5a94128264356a86299b97036fef5,
title = "Luminescence of nanocrystalline ZnS:Pb2+",
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.",
author = "A.A. Bol and A. Meijerink",
year = "2001",
month = dec,
day = "1",
language = "English",
isbn = "1-55899-603-6",
series = "Materials Research Society Symposium - Proceedings",
publisher = "Materials Research Society",
editor = "P.C. Schmidt and K.C. Mishra and {Di Bartolo}, B.",
booktitle = "Luminescence and luminescent materials : symposium held April 17-19, 2001, San Francisco, California, U.S.A.",
address = "United States",
note = "2001 Luminescent and Lumiescent Materials Symposium ; Conference date: 17-04-2001 Through 19-04-2001",
}