Title: Hybrid white-light emitting-LED based on luminescent polyfluorene polymer and quantum dots
Authors: Chou, Cheng-Hsuan
Yang, Chung-He
Hsu, Chain-Shu
Chen, Teng-Ming
Department of Applied Chemistry
Keywords: white-light emitting-LED;quantum dots;polyfluorenes
Issue Date: 1-Aug-2007
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.
URI: http://dx.doi.org/10.1166/jnn.2007.622
ISSN: 1533-4880
DOI: 10.1166/jnn.2007.622
Volume: 7
Issue: 8
Begin Page: 2785
End Page: 2789
Appears in Collections:Articles