Bright and color-saturated quantum dot light-emitting diodes: New star for next generation displays and solid state lighting

Zhanao Tan, Jian Xu, Ting Zhu, Andrew Y. Wang, Qingjiang Sun, Yongfang Li, Yongping Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The emergence of solution-processed semiconductor quantum dot (QD)-light emitting diodes (LEDs) has recently offered a great prospect for developing low-cost, efficient, bright, and large-area colorful displays compatible with flexible substrates. The band-edge electroluminescence (EL) of colloidal QDs of cadmium compounds, exhibits size-tunable spectral emission (450-760nm) and narrow bandwidth (FWHM~15-30nm), allowing for the design and fabrication of color-saturated red, green and blue (RGB) QD-LEDs with simple device configurations and high spectral purities that outperform those of liquid crystal displays and organic light-emitting diodes. Additionally, high fluorescence quantum yield and photochemical stability can be achieved by engineering the nanocrystal surfaces with wide-bandgap shells, which favors the efficiency and stability of QD-LEDs. We report in this conference of our recently developed red, orange, yellow, green, blue and white quantum dot light-emitting diodes with high brightness, high efficiency, saturated color on both indium tin oxides (ITO) coated glass and on flexible PET substrate.

Original languageEnglish (US)
Title of host publicationPhotonics and Optoelectronics Meetings (POEM) 2009 - Solar Cells, Solid State Lighting, and Information Display Technologies
DOIs
StatePublished - 2009
EventPhotonics and Optoelectronics Meetings (POEM) 2009 - Solar Cells, Solid State Lighting, and Information Display Technologies - Wuhan, China
Duration: Aug 8 2009Aug 10 2009

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume7518
ISSN (Print)0277-786X

Other

OtherPhotonics and Optoelectronics Meetings (POEM) 2009 - Solar Cells, Solid State Lighting, and Information Display Technologies
CountryChina
CityWuhan
Period8/8/098/10/09

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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