Journal article
Overcoming the Limitations of MXene Electrodes for Solution‐Processed Optoelectronic Devices
Advanced materials (Weinheim), v 34(41), pp e2206377-n/a
13 Oct 2022
Abstract
MXenes constitute a rapidly growing family of 2D materials that are promising for optoelectronic applications because of numerous attractive properties, including high electrical conductivity. However, the most widely used titanium carbide (Ti3C2Tx) MXene transparent conductive electrode exhibits insufficient environmental stability and work function (WF), which impede practical applications Ti3C2Tx electrodes in solution‐processed optoelectronics. Herein, Ti3C2Tx MXene film with a compact structure and a perfluorosulfonic acid (PFSA) barrier layer is presented as a promising electrode for organic light‐emitting diodes (OLEDs). The electrode shows excellent environmental stability, high WF of 5.84 eV, and low sheet resistance RS of 97.4 Ω sq−1. The compact Ti3C2Tx structure after thermal annealing resists intercalation of moisture and environmental contaminants. In addition, the PFSA surface modification passivates interflake defects and modulates the WF. Thus, changes in the WF and RS are negligible even after 22 days of exposure to ambient air. The Ti3C2Tx MXene is applied for large‐area, 10 × 10 passive matrix flexible OLEDs on substrates measuring 6 × 6 cm. This work provides a simple but efficient strategy to overcome both the limited environmental stability and low WF of MXene electrodes for solution‐processable optoelectronics.
Recently, various applications of MXenes have been intensively explored, except for optoelectronics, in which poor environmental stability severely impedes their practical application. This work provides a simple but effective approach to develop an environmentally stable MXene electrode that exhibits a high work function of 5.84 eV and distinguished solution processibility as the electrode for large‐area organic light‐emitting diodes.
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Details
- Title
- Overcoming the Limitations of MXene Electrodes for Solution‐Processed Optoelectronic Devices
- Creators
- Huanyu Zhou - Department of Materials Science and Engineering Seoul National University Seoul 08826 Republic of KoreaShin Jung Han - Department of Materials Science and Engineering Seoul National University Seoul 08826 Republic of KoreaHyeon‐Dong Lee - Department of Materials Science and Engineering Seoul National University Seoul 08826 Republic of KoreaDanzhen Zhang - Drexel UniversityMark Anayee - Drexel UniversitySeung Hyeon Jo - Department of Materials Science and Engineering Seoul National University Seoul 08826 Republic of KoreaYury Gogotsi - Drexel UniversityTae‐Woo Lee - Seoul National University
- Publication Details
- Advanced materials (Weinheim), v 34(41), pp e2206377-n/a
- Publisher
- Wiley
- Number of pages
- 8
- Grant note
- Pioneer Research Center Program (NRF‐2022M3C1A3081211) National Research Foundation of Korea (NRF‐2016R1A3B1908431; 2016R1A3B1908431) LGD‐SNU Incubation Program (2021005682) National Science Foundation (DMR‐2041050; DGE‐1646737)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Materials Science and Engineering; A.J. Drexel Nanomaterials Institute
- Web of Science ID
- WOS:000853717200001
- Scopus ID
- 2-s2.0-85137852318
- Other Identifier
- 991019173426204721
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