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A Simple Method for Fabricating an External Light Extraction Composite Layer with RNS to Improve the Optical Properties of OLEDs
In this study, we fabricated a random nanostructure (RNS) external light extraction composite layer containing high-refractive-index nanoparticles through a simple and inexpensive solution process and a low-temperature mask-free process. We focused on varying the shape and density of the RNSs and ad...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9103064/ https://www.ncbi.nlm.nih.gov/pubmed/35564139 http://dx.doi.org/10.3390/nano12091430 |
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author | Choi, Geun-Su Kang, Shin-Woo Bae, Eun-Jeong Jang, Eun-Bi Baek, Dong-Hyun Ju, Byeong-Kwon Park, Young-Wook |
author_facet | Choi, Geun-Su Kang, Shin-Woo Bae, Eun-Jeong Jang, Eun-Bi Baek, Dong-Hyun Ju, Byeong-Kwon Park, Young-Wook |
author_sort | Choi, Geun-Su |
collection | PubMed |
description | In this study, we fabricated a random nanostructure (RNS) external light extraction composite layer containing high-refractive-index nanoparticles through a simple and inexpensive solution process and a low-temperature mask-free process. We focused on varying the shape and density of the RNSs and adjusted the concentration of the high-refractive-index nanoparticles to control the optical properties. The RNSs fabricated using a low-temperature mask-free process can use the distance between the nanostructures and various forms to control the diffraction and scattering effects in the visible light wavelength range. Consequently, our film exhibited a direct transmittance of ~85% at a wavelength of 550 nm. Furthermore, when the RNSs’ composite film, manufactured using the low-temperature mask-free process, was applied to organic light-emitting diodes (OLEDs), it exhibited an external quantum efficiency improvement of 32.2% compared with the OLEDs without the RNSs. Therefore, the randomly distributed high-refractive-index nanoparticles on the polymer film can reduce the waveguide mode and total reflection at the substrate/air interface. These films can be used as a scattering layer to reduce the loss of the OLED substrate mode. |
format | Online Article Text |
id | pubmed-9103064 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-91030642022-05-14 A Simple Method for Fabricating an External Light Extraction Composite Layer with RNS to Improve the Optical Properties of OLEDs Choi, Geun-Su Kang, Shin-Woo Bae, Eun-Jeong Jang, Eun-Bi Baek, Dong-Hyun Ju, Byeong-Kwon Park, Young-Wook Nanomaterials (Basel) Article In this study, we fabricated a random nanostructure (RNS) external light extraction composite layer containing high-refractive-index nanoparticles through a simple and inexpensive solution process and a low-temperature mask-free process. We focused on varying the shape and density of the RNSs and adjusted the concentration of the high-refractive-index nanoparticles to control the optical properties. The RNSs fabricated using a low-temperature mask-free process can use the distance between the nanostructures and various forms to control the diffraction and scattering effects in the visible light wavelength range. Consequently, our film exhibited a direct transmittance of ~85% at a wavelength of 550 nm. Furthermore, when the RNSs’ composite film, manufactured using the low-temperature mask-free process, was applied to organic light-emitting diodes (OLEDs), it exhibited an external quantum efficiency improvement of 32.2% compared with the OLEDs without the RNSs. Therefore, the randomly distributed high-refractive-index nanoparticles on the polymer film can reduce the waveguide mode and total reflection at the substrate/air interface. These films can be used as a scattering layer to reduce the loss of the OLED substrate mode. MDPI 2022-04-22 /pmc/articles/PMC9103064/ /pubmed/35564139 http://dx.doi.org/10.3390/nano12091430 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Choi, Geun-Su Kang, Shin-Woo Bae, Eun-Jeong Jang, Eun-Bi Baek, Dong-Hyun Ju, Byeong-Kwon Park, Young-Wook A Simple Method for Fabricating an External Light Extraction Composite Layer with RNS to Improve the Optical Properties of OLEDs |
title | A Simple Method for Fabricating an External Light Extraction Composite Layer with RNS to Improve the Optical Properties of OLEDs |
title_full | A Simple Method for Fabricating an External Light Extraction Composite Layer with RNS to Improve the Optical Properties of OLEDs |
title_fullStr | A Simple Method for Fabricating an External Light Extraction Composite Layer with RNS to Improve the Optical Properties of OLEDs |
title_full_unstemmed | A Simple Method for Fabricating an External Light Extraction Composite Layer with RNS to Improve the Optical Properties of OLEDs |
title_short | A Simple Method for Fabricating an External Light Extraction Composite Layer with RNS to Improve the Optical Properties of OLEDs |
title_sort | simple method for fabricating an external light extraction composite layer with rns to improve the optical properties of oleds |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9103064/ https://www.ncbi.nlm.nih.gov/pubmed/35564139 http://dx.doi.org/10.3390/nano12091430 |
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