Temperature genesis of an exciton absorption band in 2H- and 4H-politypes of PBI<sub>2</sub>

N. K. Kramar; V. M. Kramar; Yu. M. Kachmarskii

doi:10.1117/12.679946

14 June 2006 Temperature genesis of an exciton absorption band in 2H- and 4H-politypes of PBI₂

N. K. Kramar, V. M. Kramar, Yu. M. Kachmarskii

Proceedings Volume 6254, Seventh International Conference on Correlation Optics; 62541B (2006) https://doi.org/10.1117/12.679946
Event: Seventh International Conference on Correlation Optics, 2005, Chernivsti, Ukraine

Abstract

The reasons of experimentally observed in 2H- and 4H-politypes of layer semiconductor PbI₂ anomalous temperature-depending behavior of the exciton absorption bands in the low-temperature region have been investigated. The influence of the weak exciton-phonon interaction of quadratic energy dispersion of Vanier- Mott's exciton with the nondisperse optical, and both the low-energy optical and acoustic bending-wave type phonons there has been considered. It was shown that the low-temperature dynamics of an exciton absorption peak shift in 2H-politype of the lead iodide crystals is related with the concurrent influence of two exciton energy relaxation mechanisms - on both the bending waves and the lattice optical phonons, but in the case of 4H-politype - the influence of the low-energy optical phonons must be taken into account.

Citation Download Citation

N. K. Kramar, V. M. Kramar, and Yu. M. Kachmarskii "Temperature genesis of an exciton absorption band in 2H- and 4H-politypes of PBI₂", Proc. SPIE 6254, Seventh International Conference on Correlation Optics, 62541B (14 June 2006); https://doi.org/10.1117/12.679946

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

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
6 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Excitons

Absorption

Phonons

Crystals

Semiconductors

Lead

Acoustics

Show All Keywords

Keywords/Phrases

Search In:

Publication Years