https://scholars.lib.ntu.edu.tw/handle/123456789/616432
標題: | Mechanism of luminescence in InGaN/GaN multiple quantum wells | 作者: | Yang H.C. Kuo P.F. Lin T.Y. Chen Y.F. Chen K.H. Chen L.C. LI-CHYONG CHEN YANG-FANG CHEN |
公開日期: | 2000 | 卷: | 76 | 期: | 25 | 起(迄)頁: | 3712-3714 | 來源出版物: | Applied Physics Letters | 摘要: | We report a firm evidence of luminescence from InN clusters in InGaN/GaN multiple quantum wells. Photoluminescence, photoluminescence excitation, and Raman scattering measurements have been employed to study the optical properties of InGaN/GaN multiple quantum wells. A careful examination of the low energy shoulders of the main peak luminescence reveals the fact that their separation is in good agreement with the longitudinal optical phonon energy of pure InN film measured by Raman scattering. A large Stokes-like shift between the emission peak energy and the absorption edge is found; it increases with increasing indium content. All these observations can be explained in a consistent way by the effect of localization due to self-organized InN clusters within InGaN layers. Our results thus strongly suggest that the emission mechanism of InGaN/GaN quantum wells originates from radiation recombination within the localized states of self-organized InN clusters. © 2000 American Institute of Physics. |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-0001687733&doi=10.1063%2f1.126758&partnerID=40&md5=d3fd65cba4323bf8c7aaa51c6123d4ca https://scholars.lib.ntu.edu.tw/handle/123456789/616432 |
ISSN: | 00036951 | DOI: | 10.1063/1.126758 |
顯示於: | 凝態科學研究中心 |
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