Green Synthesis of InP/ZnS Core/Shell Quantum Dots for Application in Heavy-Metal-Free Light-Emitting Diodes

Tsung Rong Kuo, Shih Ting Hung, Yen Ting Lin, Tzu Lin Chou, Ming Cheng Kuo, Ya Pei Kuo, Chia Chun Chen

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Quantum dot light-emitting diodes (QD-LEDs) have been considered as potential display technologies with the characterizations of high color purity, flexibility, transparency, and cost efficiency. For the practical applications, the development of heavy-metal-free QD-LEDs from environment-friendly materials is the most important issue to reduce the impacts on human health and environmental pollution. In this work, heavy-metal-free InP/ZnS core/shell QDs with different fluorescence were prepared by green synthesis method with low cost, safe, and environment-friendly precursors. The InP/ZnS core/shell QDs with maximum fluorescence peak at ~ 530 nm, superior fluorescence quantum yield of 60.1%, and full width at half maximum of 55 nm were applied as an emission layer to fabricate multilayered QD-LEDs. The multilayered InP/ZnS core/shell QD-LEDs showed the turn-on voltage at ~ 5 V, the highest luminance (160 cd/m2) at 12 V, and the external quantum efficiency of 0.223% at 6.7 V. Overall, the multilayered InP/ZnS core/shell QD-LEDs reveal potential to be the heavy-metal-free QD-LEDs for future display applications.

Original languageEnglish
Article number537
JournalNanoscale Research Letters
Volume12
DOIs
Publication statusPublished - 2017

Fingerprint

heavy metals
Heavy Metals
Semiconductor quantum dots
Heavy metals
Light emitting diodes
light emitting diodes
quantum dots
synthesis
Fluorescence
fluorescence
Display devices
Quantum yield
luminance
pollution
Full width at half maximum
Quantum efficiency
Transparency
health
Costs
quantum efficiency

Keywords

  • Environment-friendly
  • Green synthesis
  • Heavy-metal-free
  • InP/ZnS core/shell QDs
  • Light-emitting diodes

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

Cite this

Green Synthesis of InP/ZnS Core/Shell Quantum Dots for Application in Heavy-Metal-Free Light-Emitting Diodes. / Kuo, Tsung Rong; Hung, Shih Ting; Lin, Yen Ting; Chou, Tzu Lin; Kuo, Ming Cheng; Kuo, Ya Pei; Chen, Chia Chun.

In: Nanoscale Research Letters, Vol. 12, 537, 2017.

Research output: Contribution to journalArticle

Kuo, Tsung Rong ; Hung, Shih Ting ; Lin, Yen Ting ; Chou, Tzu Lin ; Kuo, Ming Cheng ; Kuo, Ya Pei ; Chen, Chia Chun. / Green Synthesis of InP/ZnS Core/Shell Quantum Dots for Application in Heavy-Metal-Free Light-Emitting Diodes. In: Nanoscale Research Letters. 2017 ; Vol. 12.
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