The Root Causes of the Limited Electroluminescence Stability of Solution-Coated Versus Vacuum-Deposited Small-Molecule OLEDs: A Mini-Review

Using solution-coating methods for the fabrication of organic light-emitting devices (OLEDs) offers a tremendous opportunity for enabling low-cost products and new applications. The electroluminescence (EL) stability of solution-coated (SOL) OLEDs, however, is significantly lower than that of vacuum...

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Main Authors: Fatemeh Samaeifar, Hany Aziz
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-04-01
Series:Frontiers in Chemistry
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fchem.2022.857551/full
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author Fatemeh Samaeifar
Hany Aziz
author_facet Fatemeh Samaeifar
Hany Aziz
author_sort Fatemeh Samaeifar
collection DOAJ
description Using solution-coating methods for the fabrication of organic light-emitting devices (OLEDs) offers a tremendous opportunity for enabling low-cost products and new applications. The electroluminescence (EL) stability of solution-coated (SOL) OLEDs, however, is significantly lower than that of vacuum-deposited (VAC) OLEDs, causing their operational lifetimes to be much shorter—an issue that continues to hamper their commercialization. The root causes of the lower EL stability of these devices remain unclear. This article briefly reviews and summarizes some of the work that has been done to-date for elucidating the root cause of the lower EL stability of SOL OLEDs, giving special attention to studies where side-by-side comparisons of SOL and VAC devices of the same materials have been conducted. Such comparisons allow for more-reliable conclusions about the specific effects of the solution-coating process on device stability to be made. The mini-review is intended to introduce the work done to-date on the causes of lower stability in SOL OLEDs and to stimulate further work for the purpose of closing the existing knowledge gap in this area and surmounting this long-standing challenge in the SOL OLED technology.
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spelling doaj.art-e3373856e28540f688e6ee77ca086c1e2022-12-21T23:14:44ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462022-04-011010.3389/fchem.2022.857551857551The Root Causes of the Limited Electroluminescence Stability of Solution-Coated Versus Vacuum-Deposited Small-Molecule OLEDs: A Mini-ReviewFatemeh SamaeifarHany AzizUsing solution-coating methods for the fabrication of organic light-emitting devices (OLEDs) offers a tremendous opportunity for enabling low-cost products and new applications. The electroluminescence (EL) stability of solution-coated (SOL) OLEDs, however, is significantly lower than that of vacuum-deposited (VAC) OLEDs, causing their operational lifetimes to be much shorter—an issue that continues to hamper their commercialization. The root causes of the lower EL stability of these devices remain unclear. This article briefly reviews and summarizes some of the work that has been done to-date for elucidating the root cause of the lower EL stability of SOL OLEDs, giving special attention to studies where side-by-side comparisons of SOL and VAC devices of the same materials have been conducted. Such comparisons allow for more-reliable conclusions about the specific effects of the solution-coating process on device stability to be made. The mini-review is intended to introduce the work done to-date on the causes of lower stability in SOL OLEDs and to stimulate further work for the purpose of closing the existing knowledge gap in this area and surmounting this long-standing challenge in the SOL OLED technology.https://www.frontiersin.org/articles/10.3389/fchem.2022.857551/fullextrinsicintrinsicOLEDssolution-coatingstabilityvacuum-deposition
spellingShingle Fatemeh Samaeifar
Hany Aziz
The Root Causes of the Limited Electroluminescence Stability of Solution-Coated Versus Vacuum-Deposited Small-Molecule OLEDs: A Mini-Review
Frontiers in Chemistry
extrinsic
intrinsic
OLEDs
solution-coating
stability
vacuum-deposition
title The Root Causes of the Limited Electroluminescence Stability of Solution-Coated Versus Vacuum-Deposited Small-Molecule OLEDs: A Mini-Review
title_full The Root Causes of the Limited Electroluminescence Stability of Solution-Coated Versus Vacuum-Deposited Small-Molecule OLEDs: A Mini-Review
title_fullStr The Root Causes of the Limited Electroluminescence Stability of Solution-Coated Versus Vacuum-Deposited Small-Molecule OLEDs: A Mini-Review
title_full_unstemmed The Root Causes of the Limited Electroluminescence Stability of Solution-Coated Versus Vacuum-Deposited Small-Molecule OLEDs: A Mini-Review
title_short The Root Causes of the Limited Electroluminescence Stability of Solution-Coated Versus Vacuum-Deposited Small-Molecule OLEDs: A Mini-Review
title_sort root causes of the limited electroluminescence stability of solution coated versus vacuum deposited small molecule oleds a mini review
topic extrinsic
intrinsic
OLEDs
solution-coating
stability
vacuum-deposition
url https://www.frontiersin.org/articles/10.3389/fchem.2022.857551/full
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