Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337, Japan.
Phys Chem Chem Phys. 2011 Feb 28;13(8):3227-30. doi: 10.1039/c0cp01957g. Epub 2011 Jan 14.
CdTe quantum dots coated with a silica layer containing CdS-like clusters exhibit intense photoluminescence and a spectral red-shift. Biexciton Auger recombination of these particles is examined by transient absorption spectroscopy. A lengthening of the Auger recombination lifetime by a factor of ∼3.5 in the presence of the CdS-like clusters is observed and may contribute to the good PL properties of these nanostructures.
涂有含有类似 CdS 团簇的二氧化硅层的 CdTe 量子点表现出强烈的光致发光和光谱红移。通过瞬态吸收光谱研究了这些粒子的双激子俄歇复合。在存在类似 CdS 团簇的情况下，俄歇复合寿命延长了约 3.5 倍，这可能是这些纳米结构具有良好 PL 性能的原因。
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