arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0806.3836cond-mat.mtrl-sci
收藏

无序氮化铟中局域态的光致发光

Photoluminescence from localized states in disordered indium nitride

Bhavtosh Bansal, Abdul Kadir, Arnab Bhattacharya, V. V. Moshchalkov

摘要:

研究了无序InN在强磁场中的光致发光谱。样品具有高斯光谱,低温发射峰分别位于0.82和0.98eV。由抗磁位移推断激子波函数的平均空间范围仅为2- 3 nm。这表明,重组是从一个高度局域化的国家内的景观一个光滑(经典)的无序势的顺序强度为10毫电子伏的合奏。的光致发光峰和线宽的温度依赖性的异常进一步支持的图片被困的光激发载流子。

英文摘要:

Photoluminescence spectra from disordered InN were studied in very high magnetic fields. The samples had Gaussian spectra with low temperature emission peaks at 0.82 and 0.98eV respectively. The average spatial extent of the excitonic wave functions, inferred from the diamagnetic shift, is only 2-3nm. This shows that the recombination is from an ensemble of highly localized states within a landscape of a smooth (classical) disorder potential of strength of the order of 10meV. The anomalies in the temperature dependence of the photoluminescence peak and linewidth give further support to the picture of trapped photoexcited carriers.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑