Duke Physics

Publications [#318418] of Henry Everitt

Papers Published

1. Roberts, AT; Mohanta, A; Everitt, HO; Leach, JH; Van Den Broeck, D; Hosalli, AM; Paskova, T; Bedair, SM, Spectroscopic investigation of coupling among asymmetric InGaN/GaN multiple quantum wells grown on non-polar a-plane GaN substrates, Applied Physics Letters, vol. 103 no. 18 (October, 2013), pp. 181106-181106, AIP Publishing [s1&Agg=doi], [doi] .

   Abstract:
   Low defect density asymmetric multiple quantum wells (MQWs) of InGaN/GaN grown on non-polar a-plane GaN substrates were investigated using time-integrated and time-resolved photoluminescence spectroscopy. Comparison of these spectra with the predicted emission energies reveals that these QWs may be spectrally resolved at low temperatures. However, a combination of thermal activation and resonant tunneling of carriers increasingly coupled the QWs, favoring emission from the lowest energy QWs with increasing temperature in a manner analogous to MQWs composed of other non-polar semiconductor materials but unlike most InGaN MQWs grown on polar substrates and influenced by the strong polarization-dependent effects. © 2013 AIP Publishing LLC.

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