Wurtzite/zinc-blende electronic-band alignment in basal-plane stacking faults in semi-polar GaN

Morteza Monavarian; Shopan Hafiz; Natalia Izyumskaya; Saikat Das; Ümit Özgür; Hadis Morkoç; Vitaliy Avrutin

doi:10.1117/12.2213859

26 February 2016 Wurtzite/zinc-blende electronic-band alignment in basal-plane stacking faults in semi-polar GaN

Morteza Monavarian, Shopan Hafiz, Natalia Izyumskaya, Saikat Das, Ümit Özgür, Hadis Morkoç, Vitaliy Avrutin

Proceedings Volume 9748, Gallium Nitride Materials and Devices XI; 974827 (2016) https://doi.org/10.1117/12.2213859
Event: SPIE OPTO, 2016, San Francisco, California, United States

Abstract

Heteroepitaxial semipolar and nonpolar GaN layers often suffer from high densities of extended defects including basal plane stacking faults (BSFs). BSFs which are considered as inclusions of cubic zinc-blende phase in wurtzite matrix act as quantum wells strongly affecting device performance. Band alignment in BSFs has been discussed as type of band alignment at the wurtzite/zinc blende interface governs the response in differential transmission; fast decay after the pulse followed by slow recovery due to spatial splitting of electrons and heavy holes for type- II band alignment in contrast to decay with no recovery in case of type I band alignment. Based on the results, band alignment is demonstrated to be of type II in zinc-blende segments in wurtzite matrix as in BSFs.

Citation Download Citation

Morteza Monavarian, Shopan Hafiz, Natalia Izyumskaya, Saikat Das, Ümit Özgür, Hadis Morkoç, and Vitaliy Avrutin "Wurtzite/zinc-blende electronic-band alignment in basal-plane stacking faults in semi-polar GaN ", Proc. SPIE 9748, Gallium Nitride Materials and Devices XI, 974827 (26 February 2016); https://doi.org/10.1117/12.2213859

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