Photoluminescence of PbS nanocrystals at high magnetic fields up to 30 T

Turyanska, Lyudmila and Blokland, J. H. and Elfurawi, U. and Makarovsky, O. and Christianen, P. C. M. and Patane, A. (2010) Photoluminescence of PbS nanocrystals at high magnetic fields up to 30 T. Physical Review B, 82 (19). ISSN 1098-0121

Documents
2010_PRB_PbS in highB.pdf

Request a copy
[img] PDF
2010_PRB_PbS in highB.pdf - Whole Document
Restricted to Repository staff only

277kB
Item Type:Article
Item Status:Live Archive

Abstract

We use magnetic fields up to 30 T to study the circularly polarized magneto-photoluminescence (PL) of colloidal PbS nanocrystals. A semiclassical model for the population of polarized excitons is used to account for the measured magnetic field and temperature dependence of the degree of circular polarization of the PL emission and to probe the g factor, g X, of the exciton. We report a systematic dependence of g X on the nanocrystal size with values that increase from 0.1 to 0.3 at low temperature (T<10K) with decreasing the nanocrystal diameter from 9 to 4 nm. © 2010 The American Physical Society.

Keywords:magneto-photoluminescience, quantum dots, colloidal nanoparticles, Semiconductors, PbS, exciton g-factor
Subjects:F Physical Sciences > F300 Physics
Divisions:College of Science > School of Chemistry
Related URLs:
ID Code:22523
Deposited On:06 Apr 2016 15:36

Repository Staff Only: item control page