| Literature DB >> 27173643 |
J Kobak1, T Smoleński, M Goryca, J-G Rousset, W Pacuski, A Bogucki, K Oreszczuk, P Kossacki, M Nawrocki, A Golnik, J Płachta, P Wojnar, C Kruse, D Hommel, M Potemski, T Kazimierczuk.
Abstract
We present a comparative study of two self-assembled quantum dot (QD) systems based on II-VI compounds: CdTe/ZnTe and CdSe/ZnSe. Using magneto-optical techniques we investigated a large population of individual QDs. The systematic photoluminescence studies of emission lines related to the recombination of neutral exciton X, biexciton XX, and singly charged excitons (X(+), X(-)) allowed us to determine average parameters describing CdTe QDs (CdSe QDs): X-XX transition energy difference 12 meV (24 meV); fine-structure splitting δ1=0.14 meV (δ1=0.47 meV); g-factor g = 2.12 (g = 1.71); diamagnetic shift γ=2.5 μeV T(-2) (γ =1.3 μeV T(-2)). We find also statistically significant correlations between various parameters describing internal structure of excitonic complexes.Entities:
Year: 2016 PMID： 27173643 DOI： 10.1088/0953-8984/28/26/265302
Source DB: PubMed Journal: J Phys Condens Matter ISSN： 0953-8984 Impact factor: 2.333