Files and links (1)
Published, Version of Record (VoR)Open Access (License Unspecified), Open
Journal article
A 2D Titanium Carbide MXene Flexible Electrode for High‐Efficiency Light‐Emitting Diodes
Advanced materials (Weinheim), v 32(23), pp e2000919-n/a
12 Jun 2020
PMID: 32350958
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Although several transparent conducting materials such as carbon nanotubes, graphene, and conducting polymers have been intensively explored as flexible electrodes in optoelectronic devices, their insufficient electrical conductivity, low work function, and complicated electrode fabrication processes have limited their practical use. Herein, a 2D titanium carbide (Ti3C2) MXene film with transparent conducting electrode (TCE) properties, including high electrical conductivity (≈11 670 S cm−1) and high work function (≈5.1 eV), which are achieved by combining a simple solution processing with modulation of surface composition, is described. A chemical neutralization strategy of a conducting‐polymer hole‐injection layer is used to prevent detrimental surface oxidation and resulting degradation of the electrode film. Use of the MXene electrode in an organic light‐emitting diode leads to a current efficiency of ≈102.0 cd A−1 and an external quantum efficiency of ≈28.5% ph/el, which agree well with the theoretical maximum values from optical simulations. The results demonstrate the strong potential of MXene as a solution‐processable electrode in optoelectronic devices and provide a guideline for use of MXenes as TCEs in low‐cost flexible optoelectronic devices.
A solution‐processed transparent conducting electrode with desirable properties including high electrical conductivity (≈11 668 S cm−1) and work function (≈5.1 eV) is achieved by using a 2D titanium carbide (Ti3C2) MXene thin film. Precise control of the surface chemical composition and a neutralized hole‐injection layer prevent detrimental surface/interface oxidation of the MXene and enable a high‐efficiency organic light‐emitting diode that uses the solution‐processed MXene electrode.
Metrics
Details
- Title
- A 2D Titanium Carbide MXene Flexible Electrode for High‐Efficiency Light‐Emitting Diodes
- Creators
- Soyeong Ahn - Seoul National UniversityTae‐Hee Han - Hanyang UniversityKathleen Maleski - Drexel UniversityJinouk Song - Korea Advanced Institute of Science and Technology (KAIST)Young‐Hoon Kim - Seoul National UniversityMin‐Ho Park - Seoul National UniversityHuanyu Zhou - Seoul National UniversitySeunghyup Yoo - Korea Advanced Institute of Science and Technology (KAIST)Yury Gogotsi - Drexel UniversityTae‐Woo Lee - Seoul National University
- Publication Details
- Advanced materials (Weinheim), v 32(23), pp e2000919-n/a
- Publisher
- Wiley
- Number of pages
- 7
- Grant note
- National Research Foundation of Korea Ministry of Science and ICT (NRF‐2016R1A3B1908431) Leading Foreign Research Institute Recruitment Program (2015K1A4A3047100)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering
- Web of Science ID
- WOS:000529646000001
- Scopus ID
- 2-s2.0-85084003217
- Other Identifier
- 991014970024104721
UN Sustainable Development Goals (SDGs)
This publication has contributed to the advancement of the following goals:
InCites Highlights
Data related to this publication, from InCites Benchmarking & Analytics tool:
- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Chemistry, Multidisciplinary
- Chemistry, Physical
- Materials Science, Multidisciplinary
- Nanoscience & Nanotechnology
- Physics, Applied
- Physics, Condensed Matter