Open AccessФотолюминесценция гетероструктур с ультратонкими квантовыми ямами CdTe/ZnTe
Author(s) -
N. G. Filosofov,
Alexandre Serov,
G. Karczewski,
В.Ф. Агекян,
H. Mariette,
В. П. Кочерешко
Publication year - 2020
Publication title -
fizika tverdogo tela
Language(s) - English
Resource type - Journals
eISSN - 1726-7498
pISSN - 0367-3294
DOI - 10.21883/ftt.2020.09.49771.30h
Subject(s) - exciton , photoluminescence , cadmium telluride photovoltaics , heterojunction , luminescence , spectral line , quantum well , biexciton , materials science , intensity (physics) , condensed matter physics , atomic physics , optoelectronics , molecular physics , chemistry , physics , optics , quantum mechanics , laser
Heterostructures of the CdTe/ZnTe type with ultrathin quantum wells are studied. Lines of light and heavy excitons bound to the CdTe layers are observed in the spectra. It is found that the photoluminescence intensity of the light exciton is comparable to the luminescence intensity of the heavy exciton. The temperature shifts of these lines are different, and the lines are intersected at a temperature of 65 K. The estimates of the energy and wave functions of the exciton states have made it possible to clarify parameters of some bands and excitons in such structures.