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Full-Color Display Realized from a White Polymer Light-Emitting Device Featuring a Modified Buffer Layer and Merged Color Filters

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In this study we developed color-stable, broad-spectrum, white polymer light-emitting devices (WPLEDs) featuring glycerol-modified polystyrenesulfonate-doped poly(3,4-ethylenedioxythiophene) (G-PEDOT) as the buffer layer and poly(9,9-di-2-adamantylhexylfluorene-2,7-diyl) (PADHF) doped with RP119 as the white emission layer. The optimized WPLED, which had the simple configuration indium tin oxide/G-PEDOT (95 nm, 0.065 g/mL)/PDAHF:2% RP119 (80 nm)/LiF (1 nm)/Ca (10 nm)/Al (200 nm), exhibited a broad-spectrum white emission with a maximum luminance of 16,040 cd/m2 at 12.5 V, a maximum current efficiency of 3.46 cd/A at 7 V, and a maximum power efficiency of 1.76 lm/W at 5 V; these values were enhanced by 40, 13, and 14%, respectively, relative to those of the comparable device incorporating unmodified PEDOT. We also realized a full-color display by merging this optimized broad-spectrum WPLED with color filter substrates, obtaining a good color gamut of 53.3%.
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Keywords: MERGED COLOR FILTERS; MODIFIED BUFFER LAYER; WHITE POLYMER LIGHT-EMITTING DEVICE

Document Type: Research Article

Publication date: April 1, 2017

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  • Journal of Nanoelectronics and Optoelectronics (JNO) is an international and cross-disciplinary peer reviewed journal to consolidate emerging experimental and theoretical research activities in the areas of nanoscale electronic and optoelectronic materials and devices into a single and unique reference source. JNO aims to facilitate the dissemination of interdisciplinary research results in the inter-related and converging fields of nanoelectronics and optoelectronics.
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