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

PMID17975946

ABSTRACT

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.

MATERIALS

Product Number

Brand

Product Description

748021

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots, stabilized with octadecylamine ligands, fluorescence λ_em 520 nm, solid

748080

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots, stabilized with octadecylamine ligands, fluorescence λ_em 560 nm, solid

748129

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots, stabilized with octadecylamine ligands, fluorescence λ_em 580 nm, solid

748099

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots, stabilized with octadecylamine ligands, fluorescence λ_em 600 nm, solid

900219

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots, stabilized with octadecylamine ligands, fluorescence λ_em 620 nm, 5 mg/mL in toluene

900218

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots, stabilized with octadecylamine ligands, fluorescence λ_em 600 nm, 5 mg/mL in toluene

900214

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots, stabilized with octadecylamine ligands, fluorescence λ_em 520 nm, 5 mg/mL in toluene

900212

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots, stabilized with octadecylamine ligands, fluorescence λ_em 645 nm, solid

900224

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots, carboxylic acid functionalized, fluorescence λ_em 620 nm, 1 mg/mL in H₂O

900221

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots, carboxylic acid functionalized, fluorescence λ_em 540 nm, 1 mg/mL in H₂O

900222

Sigma-Aldrich

CdSe/ZnS core-shell type quantum dots, carboxylic acid functionalized, fluorescence λ_em 580 nm, 1 mg/mL in H₂O