Quantum size effect of lead iodide nanoparticles formed by a Langmuir-Blodgett technique

Authors
Yamaki, T Asai, K Ishigure, K Ema, K Yaguchi, H
Citation
T. Yamaki et al., Quantum size effect of lead iodide nanoparticles formed by a Langmuir-Blodgett technique, MOL CRYST A, 337, 1999, pp. 225-228
Citations number
7
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS
ISSN journal
1058725X → ACNP
Volume
337
Year of publication
1999
Pages
225 - 228
Database
ISI
SICI code
1058-725X(1999)337:<225:QSEOLI>2.0.ZU;2-P
Abstract
Nanoparticles of lead iodide (PbI2) were prepared by exposure of Langmuir-B lodgett (LB) films of lead arachidate to hydrogen iodide. The photoluminesc ence (PL) spectrum of the nanoparticles consisted of three bands: an excito n band and two low-energy bands associated with stoichiometric and structur al defects. The center of the exciton band was blue-shifted due to a quantu m size effect. The PL spectra drastically changed when the temperature incr eased.