Open AccessEffect of Langmuir coating on the localization of excitonic polarization in CdS surface layer
Author(s) -
K. A. Korolkova,
V. R. Novak,
A. V. Sel’kin
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1400/5/055028
Subject(s) - exciton , spectral line , materials science , polarization (electrochemistry) , reflection (computer programming) , condensed matter physics , semiconductor , deposition (geology) , layer (electronics) , crystal (programming language) , dispersion (optics) , molecular physics , optics , chemistry , optoelectronics , nanotechnology , physics , paleontology , astronomy , sediment , computer science , biology , programming language
Low temperature ( T =2K) optical reflection spectra have been studied for the organic-semiconductor structures prepared by deposition of Langmuir-Blodgett films on CdS surface. The spectra are measured in the resonant spectral range of the A n =1 exciton state in CdS. Theoretical analysis of the spectra is carried out with an account of the spatial dispersion effects and the exciton-free surface “dead” layer. The conclusion has been drawn of the interface localization of the Wannier-Mott exciton due to organic film deposition on the crystal surface.