Identification of extremely radiative nature of AlN by time-resolved photoluminescence

T. Onuma, K. Hazu, A. Uedono, T. Sota, S. F. Chichibu

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34 Citations (Scopus)


Extremely radiative nature of high-quality AlN single crystalline epilayers was identified by means of far ultraviolet time-resolved photoluminescence using a frequency-quadrupled femtosecond Al2 O3:Ti laser. The gross radiative lifetimes of a free excitonic polariton emission as short as 10 ps at 7 K and 180 ps at 300 K were revealed, which are the shortest ever reported for bulk semiconductor materials.

Original languageEnglish
Article number061906
JournalApplied Physics Letters
Issue number6
Publication statusPublished - 2010


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