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Carrier Modulation Layer-Enhanced Organic Light-Emitting Diodes

Organic light-emitting diode (OLED)-based display products have already emerged in the market and their efficiencies and lifetimes are sound at the comparatively low required luminance. To realize OLED for lighting application sooner, higher light quality and better power efficiency at elevated lumi...

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Autores principales: Jou, Jwo-Huei, Kumar, Sudhir, Singh, Meenu, Chen, Yi-Hong, Chen, Chung-Chia, Lee, Meng-Ting
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6332251/
https://www.ncbi.nlm.nih.gov/pubmed/26193252
http://dx.doi.org/10.3390/molecules200713005
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author Jou, Jwo-Huei
Kumar, Sudhir
Singh, Meenu
Chen, Yi-Hong
Chen, Chung-Chia
Lee, Meng-Ting
author_facet Jou, Jwo-Huei
Kumar, Sudhir
Singh, Meenu
Chen, Yi-Hong
Chen, Chung-Chia
Lee, Meng-Ting
author_sort Jou, Jwo-Huei
collection PubMed
description Organic light-emitting diode (OLED)-based display products have already emerged in the market and their efficiencies and lifetimes are sound at the comparatively low required luminance. To realize OLED for lighting application sooner, higher light quality and better power efficiency at elevated luminance are still demanded. This review reveals the advantages of incorporating a nano-scale carrier modulation layer (CML), also known as a spacer, carrier-regulating layer, or interlayer, among other terms, to tune the chromaticity and color temperature as well as to markedly improve the device efficiency and color rendering index (CRI) for numerous OLED devices. The functions of the CML can be enhanced as multiple layers and blend structures are employed. At proper thickness, the employment of CML enables the device to balance the distribution of carriers in the two emissive zones and achieve high device efficiencies and long operational lifetime while maintaining very high CRI. Moreover, we have also reviewed the effect of using CML on the most significant characteristics of OLEDs, namely: efficiency, luminance, life-time, CRI, SRI, chromaticity, and the color temperature, and see how the thickness tuning and selection of proper CML are crucial to effectively control the OLED device performance.
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spelling pubmed-63322512019-01-24 Carrier Modulation Layer-Enhanced Organic Light-Emitting Diodes Jou, Jwo-Huei Kumar, Sudhir Singh, Meenu Chen, Yi-Hong Chen, Chung-Chia Lee, Meng-Ting Molecules Review Organic light-emitting diode (OLED)-based display products have already emerged in the market and their efficiencies and lifetimes are sound at the comparatively low required luminance. To realize OLED for lighting application sooner, higher light quality and better power efficiency at elevated luminance are still demanded. This review reveals the advantages of incorporating a nano-scale carrier modulation layer (CML), also known as a spacer, carrier-regulating layer, or interlayer, among other terms, to tune the chromaticity and color temperature as well as to markedly improve the device efficiency and color rendering index (CRI) for numerous OLED devices. The functions of the CML can be enhanced as multiple layers and blend structures are employed. At proper thickness, the employment of CML enables the device to balance the distribution of carriers in the two emissive zones and achieve high device efficiencies and long operational lifetime while maintaining very high CRI. Moreover, we have also reviewed the effect of using CML on the most significant characteristics of OLEDs, namely: efficiency, luminance, life-time, CRI, SRI, chromaticity, and the color temperature, and see how the thickness tuning and selection of proper CML are crucial to effectively control the OLED device performance. MDPI 2015-07-17 /pmc/articles/PMC6332251/ /pubmed/26193252 http://dx.doi.org/10.3390/molecules200713005 Text en © 2015 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Review
Jou, Jwo-Huei
Kumar, Sudhir
Singh, Meenu
Chen, Yi-Hong
Chen, Chung-Chia
Lee, Meng-Ting
Carrier Modulation Layer-Enhanced Organic Light-Emitting Diodes
title Carrier Modulation Layer-Enhanced Organic Light-Emitting Diodes
title_full Carrier Modulation Layer-Enhanced Organic Light-Emitting Diodes
title_fullStr Carrier Modulation Layer-Enhanced Organic Light-Emitting Diodes
title_full_unstemmed Carrier Modulation Layer-Enhanced Organic Light-Emitting Diodes
title_short Carrier Modulation Layer-Enhanced Organic Light-Emitting Diodes
title_sort carrier modulation layer-enhanced organic light-emitting diodes
topic Review
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6332251/
https://www.ncbi.nlm.nih.gov/pubmed/26193252
http://dx.doi.org/10.3390/molecules200713005
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