Hybrid white-light emitting-LED based on luminescent polyfluorene polymer and quantum dots

Cheng Hsuan Chou, Chung He Yang, Chain-Shu Hsu, Teng-Ming Chen*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

We report the fabrication and electroluminescence (EL) characterization of a white-emitting hybrid organic/inorganic light emitting device (LED) by integrating core-shell CdSe/ZnS quantum dots (QDs) acting as a yellow emitter and polyfluorenes as the blue emitter in a multilayered structure. The hybrid white-emitting device was fabricated by spin-coating QDs in varied concentrations onto the layer of polyfluorenes with different functional groups (i.e., sulfur-containing PF1 and PFO). Depending on the QDs concentrations and the design of the hybrid LED, our device is able to exhibit either electroluminescence from QDs or a combination of both PF and QD. The EL spectra at different driving voltages, I-V characteristics, and EL chromaticity of the LEDs based on PF1/QD and PFO/QD LEDs have been measured, investigated, and compared, respectively.

Original languageEnglish
Pages (from-to)2785-2789
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume7
Issue number8
DOIs
StatePublished - 1 Aug 2007

Keywords

  • Polyfluorenes
  • Quantum dots
  • White-light emitting-LED

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