Shaping White Light Through Electroluminescent Fully Organic Coupled Microcavities

Mazzeo, Marco; Sala, Fabio Della; Mariano, Fabrizio; Melcarne, Giovanna; Agostino, Stefania D'; Duan, Yu; Cingolani, R.; Gigli, Giuseppe

doi:10.1002/adma.201001631

Cited by 18 publications

(19 citation statements)

References 25 publications

(16 reference statements)

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“…The possibility to increase field localisation in the hybrid photonic‐plasmonic modes observed in the 3D opal structures might be used in order to obtain field amplifications in novel sensors or polariton lasing so far observed only in 1D microcavities . The wider richness in type of dispersion, polarization dependence, density of states of photonic modes in 3D structures with respect to 1D ones could allow to improve tunability and sensitivity of these hybrid structures for different photonic applications.…”

Section: Resultsmentioning

confidence: 99%

“…in sensors, in electrically pumped microcavities, polariton lasers, white light OLED) . Nowadays, a great effort is also devoted to the combination of PhC and plasmonic structures to study novel phenomena such as directional enhancement of fluorescence, negative refraction, omnidirectional diversion, refractive index tuning and cloaking at visible frequencies …”

Section: Introductionmentioning

confidence: 99%

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Hybrid Plasmonic–Photonic Nanostructures: Gold Nanocrescents Over Opals

Robbiano

Giòrdano

Martella

et al. 2013

Advanced Optical Materials

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The interaction of localized surface plasmon resonances (LSPRs) with the\ud photonic modes in an opal photonic crystal is reported. Gold nanocrescents\ud are evaporated at glancing angles over both microsphere monolayers and\ud artifi cial opals. Microsphere monolayers allow the three localised plasmonic\ud resonances observed in the nanocrescent optical spectra to be identifi ed. By\ud changing the microsphere diameter, the opal photonic stop band and a selected\ud plasmonic resonance can be spectrally overlapped causing a dramatic\ud change of the properties of both excitations. The creation of new modes is observed,\ud whose spectral position and dispersion properties are a combination\ud of those localised in nanoparticle plasmons and in the photonic crystal

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid Plasmonic–Photonic Nanostructures: Gold Nanocrescents Over Opals

Robbiano

Giòrdano

Martella

et al. 2013

Advanced Optical Materials

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“…However, such mirrors have their own shortcomings in that the DBRs are very expensive because of the multiple layers of dielectric materials; metal films with ≈20 nm thickness significantly reduce the performance of WOLEDs because of their poor transparency. Thus, developing a partially reflective mirror that is cost‐efficient and transparent is an important challenge for the chromaticity modulation of WOLEDs …”

Section: Oled Parameters With Wep Thicknesses Of 100 80 and 60 Nm Omentioning

confidence: 99%

Controlling the Chromaticity of White Organic Light‐Emitting Diodes Using a Microcavity Architecture

Jeong

Jung

Kang

et al. 2019

Advanced Optical Materials

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The tailoring of the chromaticity of white organic light‐emitting diodes (WOLEDs) has presented a significant challenge in their application in smart lighting sources to improve the quality of life and human performance. Here, a new microcavity WOLED (M‐WOLED) structure to modulate the chromaticity of the emitted light is demonstrated by only adjusting the thickness of the white light‐emitting layer. By introducing a polymer‐metal hybrid electrode that functions both as a partially reflective mirror and a transparent electrode, a very simple microcavity architecture that does not require additional outer mirrors, such as distributed Bragg reflectors is developed. The resulting M‐WOLEDs exhibit reddish‐, greenish‐, and bluish‐white colors with different thicknesses of the single white light‐emitting layer.

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“…In recent years, research areas and novel applications focusing on organic light emitting devices (OLEDs) have developed rapidly [1,2,3,4]. However, there are still many problems that are inhibiting large scale industrialization of OLEDs.…”

Section: Introductionmentioning

confidence: 99%

Method for Aluminum Oxide Thin Films Prepared through Low Temperature Atomic Layer Deposition for Encapsulating Organic Electroluminescent Devices

Liu

Duan

et al. 2015

Materials

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Preparation of dense alumina (Al2O3) thin film through atomic layer deposition (ALD) provides a pathway to achieve the encapsulation of organic light emitting devices (OLED). Unlike traditional ALD which is usually executed at higher reaction n temperatures that may affect the performance of OLED, this application discusses the development on preparation of ALD thin film at a low temperature. One concern of ALD is the suppressing effect of ambient temperature on uniformity of thin film. To mitigate this issue, the pumping time in each reaction cycle was increased during the preparation process, which removed reaction byproducts and inhibited the formation of vacancies. As a result, the obtained thin film had both high uniformity and density properties, which provided an excellent encapsulation performance. The results from microstructure morphology analysis, water vapor transmission rate, and lifetime test showed that the difference in uniformity between thin films prepared at low temperatures, with increased pumping time, and high temperatures was small and there was no obvious influence of increased pumping time on light emitting performance. Meanwhile, the permeability for water vapor of the thin film prepared at a low temperature was found to reach as low as 1.5 × 10 −4 g/(m 2 · day) under ambient conditions of 25 °C and 60% relative humidity, indicating a potential extension in the lifetime for the OLED.

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Shaping White Light Through Electroluminescent Fully Organic Coupled Microcavities

Cited by 18 publications

References 25 publications

Hybrid Plasmonic–Photonic Nanostructures: Gold Nanocrescents Over Opals

Hybrid Plasmonic–Photonic Nanostructures: Gold Nanocrescents Over Opals

Controlling the Chromaticity of White Organic Light‐Emitting Diodes Using a Microcavity Architecture

Method for Aluminum Oxide Thin Films Prepared through Low Temperature Atomic Layer Deposition for Encapsulating Organic Electroluminescent Devices

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