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  • Bright and color-saturated emission from blue light-emitting diodes based on solution-processed colloidal nanocrystal quantum dots.

Bright and color-saturated emission from blue light-emitting diodes based on solution-processed colloidal nanocrystal quantum dots.

Nano letters (2007-11-03)
Zhanao Tan, Fan Zhang, Ting Zhu, Jian Xu, Andrew Y Wang, John D Dixon, Linsong Li, Qi Zhang, Suzanne E Mohney, Jerzy Ruzyllo
摘要

We report a multilayer solution-processed blue light-emitting diode based on colloidal core/shell CdS/ZnS nanocrystal quantum dots (QDs). At a low-operating voltage of 5.5 V, the device emits spectrally pure blue radiation at 460 nm with a narrow full-width-at-half-maximum bandwidth of 20 nm and high brightness up to 1600 cd/m2. Broad-band, long-wavelength emission from the polymer components and deep traps in the QDs are minimized to less than 5% of the total emission.

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CdSe/ZnS 核壳型量子点, stabilized with octadecylamine ligands, fluorescence λem 600 nm, 5 mg/mL in toluene
Sigma-Aldrich
CdSe/ZnS 核壳型量子点, stabilized with octadecylamine ligands, fluorescence λem 620 nm, 5 mg/mL in toluene
Sigma-Aldrich
CdSe/ZnS 核壳型量子点, carboxylic acid functionalized, fluorescence λem 560 nm, 1 mg/mL in H2O
Sigma-Aldrich
CdSe/ZnS 核壳型量子点, stabilized with octadecylamine ligands, fluorescence λem 580 nm, 5 mg/mL in toluene
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CdSe/ZnS 核壳型量子点, carboxylic acid, fluorescence λem 600 nm, 1 mg/mL in H2O
Sigma-Aldrich
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Sigma-Aldrich
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Sigma-Aldrich
CdSe/ZnS 核壳型量子点, stabilized with octadecylamine ligands, fluorescence λem 540 nm, 5 mg/mL in toluene

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