Intersubband transitions in ZnO multiple quantum wells

M. Belmoubarik, K. Ohtani, H. Ohno

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47 Citations (Scopus)


Intersubband transitions in ZnOMgZnO multiple quantum wells (MQWs) are investigated by a photocurrent spectroscopy. Photocurrent peaks are observed in the energy range from 300 to 400 meV and shifted to higher energy by reducing the ZnO well thickness. Polarization-resolved photocurrent spectra show that these peaks are observed when the polarization of incident lights is TM mode, following the intersubband selection rule. Calculation indicates that the photocurrent peaks are the intersubband transition from the first to the third subband in ZnOMgZnO MQWs.

Original languageEnglish
Article number191906
JournalApplied Physics Letters
Issue number19
Publication statusPublished - 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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