Exciton absorption of p-GaSe crystals containing 2D hole gas: temperature dependencies

Yurij I. Zhirko; Ivan P. Zharkov; Zakhar D. Kovalyuk

doi:10.1117/12.569622

20 July 2004 Exciton absorption of p-GaSe crystals containing 2D hole gas: temperature dependencies

Yurij I. Zhirko, Ivan P. Zharkov, Zakhar D. Kovalyuk

Proceedings Volume 5507, XVI International Conference on Spectroscopy of Molecules and Crystals; (2004) https://doi.org/10.1117/12.569622
Event: XVI International Conference on Spectroscopy of Molecules and Crystals, 2003, Sevastopol, Ukraine

Abstract

Within the framework of the traditional Elliott-Toyozawa theory the investigation of absorption spectra of p-GaSe crystals pure, doped and intercalated with manganese impurity made in a wide temperature region (4.5-300K). It is shown that presence in p-GaSe of 2D hole gas localized in quantum wells (QW) that are degenerate with excitons in the momentum space leads to suppression of the oscillator strength of exciton transition for ground, as well as excited, states. It was found that growth of temperature in p-GaSe results in holes redistribution to the higher energy states. This appears as consecutive (from the ground to excited states) suppression of and re-establishment of the integral characteristics of exciton absorption bands. Data of temperature population of 2D hole gas in QW are well explain by Maxwell distribution. Slight differences that appear in temperature dependencies of exciton absorption spectra ofp-GaSe crystals pure, doped and intercalated by manganese impurity are attributed with different depth of QW and location of Fermi level in these crystals.

Citation Download Citation

Yurij I. Zhirko, Ivan P. Zharkov, and Zakhar D. Kovalyuk "Exciton absorption of p-GaSe crystals containing 2D hole gas: temperature dependencies", Proc. SPIE 5507, XVI International Conference on Spectroscopy of Molecules and Crystals, (20 July 2004); https://doi.org/10.1117/12.569622

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available