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

Zhanao Tan, Fan Zhang, Ting Zhu, Jian Xu, Andrew Y. Wang, John D. Dixon, Nsong Li, Qi Zhang, Suzanne E. Mohney, Jerzy Ruzyllo

Research output: Contribution to journalArticle

175 Scopus citations

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/m 2 . 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.

Original languageEnglish (US)
Pages (from-to)3803-3807
Number of pages5
JournalNano letters
Volume7
Issue number12
DOIs
StatePublished - Dec 1 2007

All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

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