Abstract
We report on vertical and lateral intersubband photocurrent (PC) spectroscopy on self-assembled In(Ga)As/GaAs quantum dots (QDs). Transitions from bound states in QDs to the GaAs continuum have been observed in vertical PC measurements. These transitions are nearly independent of polarization of the incident light. Transition from QD bound state to the wetting layer subband has been observed in lateral PC spectra. A fine structure of the first excited state in QD can be resolved with in-plane polarization dependent measurements. We present a consistent energy band diagram of self-assembled In(Ga)As/GaAs QDs by comparing photoluminescence and infrared photocurrent data.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
