White emitting polyfluorene functionalized with azide hybridized on near-UV light emitting diode for high color rendering index

Date
2008
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Source Title
Optics Express
Print ISSN
1094-4087
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Publisher
Optical Society of America
Volume
16
Issue
2
Pages
1115 - 1124
Language
English
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Abstract

We develop and demonstrate high-quality white light generation that relies on the use of a single-type simple conjugated polymer of polyfluorene functionalized with azide groups (PFA) integrated on a near-UV LED platform. The high-quality white emission from the polyfluorene is achieved by using the azide functionalization to facilitate cross-linking intentionally when cast into solid-state form. Hybridized on n-UV InGaN/GaN LED at 378 nm, the PFA emitters collectively generate a very broad down-converting photoluminescence at longer wavelengths across the entirety of the visible spectrum, yielding high color rendering indices up to 91. (c) 2008 Optical Society of America.

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