Influence of the image charge effect on excitonic energy structure in organic-inorganic multiple quantum well crystals

We have experimentally compared the excitonic properties of hybrid multiple quantum wells, (C sub(6) H sub(5)-C sub(2) H sub(4) NH sub(3)) sub(2) PbBr sub(4) and (C sub(4) H sub(9) NH sub(3)) sub(2) PbBr sub(4), using photoluminescence, reflection, and photoluminescence excitation measurements. We f...

Full description

Saved in:
Bibliographic Details
Published in:Physical review. B, Condensed matter and materials physics Condensed matter and materials physics, 2013-03, Vol.87 (12), Article 125421
Main Authors: Takagi, Hidetsugu, Kunugita, Hideyuki, Ema, Kazuhiro
Format: Article
Language:English
Subjects:
Condensed matter
Crystal structure
Excitation
Excitons
Image charge
Photoluminescence
Quantum wells
Reflection
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We have experimentally compared the excitonic properties of hybrid multiple quantum wells, (C sub(6) H sub(5)-C sub(2) H sub(4) NH sub(3)) sub(2) PbBr sub(4) and (C sub(4) H sub(9) NH sub(3)) sub(2) PbBr sub(4), using photoluminescence, reflection, and photoluminescence excitation measurements. We focused on the contribution of the image charge effect (ICE) to the excitonic energy structure in these materials which have different dielectric constants of the barrier layers. We have found that the binding energies of the 2s and 3s excitons are considerably enhanced by ICE, while the contribution of ICE to the 1s excitons is smaller because of the small Bohr radius, which is comparable to the well width.
ISSN:1098-0121
1550-235X
DOI:10.1103/PhysRevB.87.125421