Wavelength-tunable and white light emission from polymer-converted micropixellated InGaN ultraviolet light-emitting diodes

G. Heliotis, E. Gu, C. Griffin, C.W. Jeon, P.N. Stavrinou, M.D. Dawson, D.D.C. Bradley

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

We report the use of light-emitting conjugated polymer materials to wavelength-convert the emission from a two-dimensional array of micropixellated InGaN light-emitting diodes (LEDs). We demonstrate hybrid organic/inorganic light-emitting devices that can operate across the entire visible spectrum, and we also fabricate white-emitting versions of these devices by employing single layers of carefully adjusted polymer blends in which cascade non-radiative energy transfer occurs between the constituent materials. Additional colours may be easily obtained by tuning the composition of the polymer blends. Our work demonstrates that the combination of conjugated polymers and UV micro-LED arrays provides an attractive approach to developing microscale wavelength-tunable light sources and may provide a route to low-cost full-colour microdisplays and other instrumentation devices.
Original languageEnglish
Pages (from-to)S445-S449
JournalJournal of Optics A: Pure and Applied Optics
Volume8
Issue number7
DOIs
Publication statusPublished - 2006

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ultraviolet radiation
light emission
light emitting diodes
polymer blends
polymers
wavelengths
color
visible spectrum
microbalances
cascades
light sources
energy transfer
tuning
routes

Keywords

  • hybrid devices
  • conjugated polymers
  • polyfluorenes
  • wavelength conversion
  • optics
  • photonics

Cite this

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title = "Wavelength-tunable and white light emission from polymer-converted micropixellated InGaN ultraviolet light-emitting diodes",
abstract = "We report the use of light-emitting conjugated polymer materials to wavelength-convert the emission from a two-dimensional array of micropixellated InGaN light-emitting diodes (LEDs). We demonstrate hybrid organic/inorganic light-emitting devices that can operate across the entire visible spectrum, and we also fabricate white-emitting versions of these devices by employing single layers of carefully adjusted polymer blends in which cascade non-radiative energy transfer occurs between the constituent materials. Additional colours may be easily obtained by tuning the composition of the polymer blends. Our work demonstrates that the combination of conjugated polymers and UV micro-LED arrays provides an attractive approach to developing microscale wavelength-tunable light sources and may provide a route to low-cost full-colour microdisplays and other instrumentation devices.",
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Wavelength-tunable and white light emission from polymer-converted micropixellated InGaN ultraviolet light-emitting diodes. / Heliotis, G.; Gu, E.; Griffin, C.; Jeon, C.W.; Stavrinou, P.N.; Dawson, M.D.; Bradley, D.D.C.

In: Journal of Optics A: Pure and Applied Optics, Vol. 8, No. 7, 2006, p. S445-S449.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Wavelength-tunable and white light emission from polymer-converted micropixellated InGaN ultraviolet light-emitting diodes

AU - Heliotis, G.

AU - Gu, E.

AU - Griffin, C.

AU - Jeon, C.W.

AU - Stavrinou, P.N.

AU - Dawson, M.D.

AU - Bradley, D.D.C.

PY - 2006

Y1 - 2006

N2 - We report the use of light-emitting conjugated polymer materials to wavelength-convert the emission from a two-dimensional array of micropixellated InGaN light-emitting diodes (LEDs). We demonstrate hybrid organic/inorganic light-emitting devices that can operate across the entire visible spectrum, and we also fabricate white-emitting versions of these devices by employing single layers of carefully adjusted polymer blends in which cascade non-radiative energy transfer occurs between the constituent materials. Additional colours may be easily obtained by tuning the composition of the polymer blends. Our work demonstrates that the combination of conjugated polymers and UV micro-LED arrays provides an attractive approach to developing microscale wavelength-tunable light sources and may provide a route to low-cost full-colour microdisplays and other instrumentation devices.

AB - We report the use of light-emitting conjugated polymer materials to wavelength-convert the emission from a two-dimensional array of micropixellated InGaN light-emitting diodes (LEDs). We demonstrate hybrid organic/inorganic light-emitting devices that can operate across the entire visible spectrum, and we also fabricate white-emitting versions of these devices by employing single layers of carefully adjusted polymer blends in which cascade non-radiative energy transfer occurs between the constituent materials. Additional colours may be easily obtained by tuning the composition of the polymer blends. Our work demonstrates that the combination of conjugated polymers and UV micro-LED arrays provides an attractive approach to developing microscale wavelength-tunable light sources and may provide a route to low-cost full-colour microdisplays and other instrumentation devices.

KW - hybrid devices

KW - conjugated polymers

KW - polyfluorenes

KW - wavelength conversion

KW - optics

KW - photonics

UR - http://dx.doi.org/10.1088/1464-4258/8/7/S20

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DO - 10.1088/1464-4258/8/7/S20

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JO - Journal of Optics A: Pure and Applied Optics

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