Hyoseong Jang, Seung Kwon Jeon, Seungmin Jeong, Heedae Kim
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引用次数: 0
Abstract
Power-dependent time-integrated/time-resolved photoluminescence (PL) measurements of the quantum ring (QR) structures were performed under 4 K. As excitation power is increased, the exciton and biexciton states were confirmed by linearly and superlinearly increasing power factors, respectively. Notably, the power-dependent blue shift showed fine structure splitting owing to the diverse sizes of the excited states. These different excited states could be distinguished by measuring the power-dependent decay times. Asymmetric electron–hole exchange interactions, attributed to the different sizes of energy states and different oscillator strengths between the ground and excited exciton states, were analyzed using time-resolved PL techniques. The various excited states were resolved based on their exponential decay rates.
在 4 K 下对量子环（QR）结构进行了随功率变化的时间积分/时间分辨光致发光（PL）测量。随着激发功率的增加，激子和双激子态分别通过线性和超线性增加的功率因数得到了证实。值得注意的是，由于激发态的大小不同，随功率变化的蓝移显示出精细的结构分裂。这些不同的激发态可以通过测量功率衰减时间来区分。由于能态大小不同以及基态和激发态之间的振荡器强度不同，利用时间分辨聚光技术分析了不对称的电子-空穴交换相互作用。根据各种激发态的指数衰减率，对它们进行了解析。
期刊介绍：
The Journal of the Korean Physical Society (JKPS) covers all fields of physics spanning from statistical physics and condensed matter physics to particle physics. The manuscript to be published in JKPS is required to hold the originality, significance, and recent completeness. The journal is composed of Full paper, Letters, and Brief sections. In addition, featured articles with outstanding results are selected by the Editorial board and introduced in the online version. For emphasis on aspect of international journal, several world-distinguished researchers join the Editorial board. High quality of papers may be express-published when it is recommended or requested.
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