Fine structure of excitons in II-VI quantum wells and dots

Joachim Puls; Fritz Henneberger

doi:10.1117/12.316734

7 July 1998 Fine structure of excitons in II-VI quantum wells and dots

Joachim Puls, Fritz Henneberger

Proceedings Volume 3283, Physics and Simulation of Optoelectronic Devices VI; (1998) https://doi.org/10.1117/12.316734
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

Abstract

Applying a magnetic field along principal axes, the fine structure of the groundstate exciton caused by the electron- hole exchange interaction is studied for (Zn,Cd)Se/ZnSe quantum wells and CdSe quantum dots on ZnSe. In quantum wells, the zero-field splitting between optically allowed and forbidden (dark) states is increased by a factor of about two with respect to the bulk ZnSe value (0.25 meV). The localization of excitons gives rise to a finite, but minor contribution from the non-analytical part. For quantum dots, as a result of the 3D confinement, the splitting is further enhanced and reaches values ranging between 1.5 and 2.0 meV. Its weak size dependence is a consequence of the finite barrier height at the CdSe/ZnSe hetero-interface. Our findings signify that dark excitons do not profoundly affect the laser action of these quantum structures.

Citation Download Citation

Joachim Puls and Fritz Henneberger "Fine structure of excitons in II-VI quantum wells and dots", Proc. SPIE 3283, Physics and Simulation of Optoelectronic Devices VI, (7 July 1998); https://doi.org/10.1117/12.316734

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