Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5399418 | Journal of Luminescence | 2014 | 12 Pages |
Abstract
InAlN/AlGaN multiple quantum wells (MQWs) emitting between 300 and 350Â nm have been prepared by metalorganic chemical vapor deposition on planar AlN templates. To obtain strong room temperature luminescence from InAlN QWs a two temperature approach was required. The intensity decayed weakly as the temperature was increased to 300Â K, with ratios IPL(300Â K)/IPL(T)max up to 70%. This high apparent internal quantum efficiency is attributed to the exceptionally strong carrier localization in this material, which is also manifested by a high Stokes shift (0.52Â eV) of the luminescence. Based on these results InAlN is proposed as a robust alternative to AlGaN for ultraviolet emitting devices.
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Authors
Vitaly Z. Zubialevich, Thomas C. Sadler, Duc V. Dinh, Shahab N. Alam, Haoning Li, Pietro Pampili, Peter J. Parbrook,