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首页> 外文会议>TMS annual meeting exhibition >LONG-TIME PHOTOLUMINESCENCE KINETICS IN QUANTUM DOT SAMPLES
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LONG-TIME PHOTOLUMINESCENCE KINETICS IN QUANTUM DOT SAMPLES

机译：量子点样品中的长时间光致发光动力学

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摘要

Some quantum dot samples show a long-time behavior of their luminescence intensity decay. The effect was recently explained as being due to a cooperation of many tunneling channels transferring electrons from quantum dots with triplet exciton to a quantum dot at which the electrons can recombine with the holes in the valence band states. In this work we show that the long-time character of the sample luminescence decay can be explained also as being due to an intrinsic mechanism of a single dot, namely, by a nonadiabatic effect of the upconversion and of a releasing the electron from the quantum dot, caused by the electron-phonon multiple scattering mechanism.
机译：一些量子点样本显示了其发光强度衰减的长时间行为。最近将这种效应解释为归因于许多隧穿通道的协作，这些通道将电子从具有三重态激子的量子点转移到量子点，在该量子点，电子可以与价带态的空穴复合。在这项工作中，我们证明了样品发光衰减的长期特性也可以解释为是由于单个点的内在机理，即上转换的非绝热效应以及从量子中释放电子的非绝热效应。点，是由电子-声子多重散射机制引起的。

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