Optical properties of short-period Si/Ge superlattices grown on (001) Ge studied with photoreflectance

Ulrich Menczigar; Michael J. Dahmen; Reinhard Zachai; K. Eberl; Gerhard Abstreiter

doi:10.1117/12.24402

1 March 1991 Optical properties of short-period Si/Ge superlattices grown on (001) Ge studied with photoreflectance

Ulrich Menczigar, Michael J. Dahmen, Reinhard Zachai, K. Eberl, Gerhard Abstreiter

Proceedings Volume 1361, Physical Concepts of Materials for Novel Optoelectronic Device Applications I: Materials Growth and Characterization; (1991) https://doi.org/10.1117/12.24402
Event: Physical Concepts of Materials for Novel Optoelectronic Device Applications, 1990, Aachen, Germany

Abstract

Si/Ge superlattices provide the possibility to create a novel direct band gap semiconductor. The energies and oscillator strength of interband transitions are strongly affected by strain individual layer thicknesses and superlattice periodicity. We report on photoreflectance (PR) studies of SimGen superattices with a layer thickness ratio m/n1/3 and period lengths of 8 12 and 16 monolayers. Between 1. 9 and 2. 5 eV transitions which are related to the E1 gap are observed for all samples. In the infrared region between 0. 9 and 1. 2 eV superlattice induced interband transitions are observed for Si2Ge6.

Citation Download Citation

Ulrich Menczigar, Michael J. Dahmen, Reinhard Zachai, K. Eberl, and Gerhard Abstreiter "Optical properties of short-period Si/Ge superlattices grown on (001) Ge studied with photoreflectance", Proc. SPIE 1361, Physical Concepts of Materials for Novel Optoelectronic Device Applications I: Materials Growth and Characterization, (1 March 1991); https://doi.org/10.1117/12.24402

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