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Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/16727

Title: State Filling, Coulomb, and Trapping Effects in the Optical Nonlinearity of CdTe Quantum Dots in Glass
Authors: V. Esch;B. Fluegel;G. Khitrova;H. M. Gibbs;Xu Jiajin;K. Kang;S. W. Koch;Liu, Li‐Chi;S. H. Risbud;N. Peyghambarian
Contributors: 物理學系
Date: 1990-10
Issue Date: 2013-06-05T07:45:48Z
Publisher: The American Physical Society
Abstract: Microcrystallites of CdTe were grown in a special-formula glass, yielding CdTe dots; the linear-absorption spectrum exhibits as many as six quantum-confinement peaks. Excitation of the sample with pulses ranging from femtoseconds to microseconds has allowed us to distinguish between various mechanisms for optical nonlinearity. At very early times, phase-space filling and Coulomb interaction between the excited charged carriers is responsible for the absorption changes, δα. At later times, Coulomb effects due to trapped carriers remain and last for nanoseconds or microseconds.
Relation: Physical Review B, 42(12): 7450-7453
Appears in Collections:[物理學系] 期刊論文

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