Cart (Loading....) | Create Account
Close category search window
 

Different physics for edge and centre delta-doping into a QW

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

8 Author(s)
Cheng, H.H. ; Donbass State Eng. Acad., Kramatorsk, Ukraine ; Dalakyan, A. ; Yang, Z.P. ; Mashanov, V.
more authors

This study measured the absorption spectra of a centre and an edge delta-doped boron into the quantum wells (QWs). The samples used were MBE grown Si/Si0.88/Ge0.12 MQWs. Absorption spectra were taken in the spectral range 100-550 cm-1 using Fourier infrared spectrometer in the temperature interval 10-77 K. The experiments showed that absorption spectra in the case of the edge doped samples were approximately 1.5 times broader than for the centre doped ones. The change of absorption is connected with the dependence of a binding energy of impurity states on a position of acceptors in the QW, and also with lowering of symmetry of the structure. With d-doping made to the edge the QW becomes asymmetric in comparison with the centre doped ones. It leads to a change in symmetry for wave functions and consequently to a change in selection rules for optical transitions both for optical transitions between impurity end space quantization levels and interlevel transitions as well.

Published in:

Advanced Optoelectronics and Lasers, 2005. Proceedings of CAOL 2005. Second International Conference on  (Volume:2 )

Date of Conference:

12-17 Sept. 2005

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.