TY - JOUR
T1 - Flexible and Transparent Electrode of Hybrid Ti3C2TXMXene-Silver Nanowires for High-Performance Quantum Dot Light-Emitting Diodes
AU - Jiang, Wei
AU - Lee, Seokyeong
AU - Zhao, Kaiying
AU - Lee, Kyuho
AU - Han, Hyowon
AU - Oh, Jin Woo
AU - Lee, Hyeokjung
AU - Kim, Hyerim
AU - Koo, Chong Min
AU - Park, Cheolmin
N1 - Funding Information:
This research was supported by Creative Materials Discovery Program and National R&D Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science and ICT (No. 2018M3D1A1058536 and No. 2021M3H4A1A03047331). This research was also supported by a grant from the National Research Foundation of Korea (NRF) funded by the Korean government (MEST) (No. 2020R1A2B5B03002697).
Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.
PY - 2022/6/28
Y1 - 2022/6/28
N2 - The development of electrodes with high conductivity, optical transparency, and reliable mechanical flexibility and stability is important for numerous solution-processed photoelectronic applications. Although transparent Ti3C2TXMXene electrodes with high conductivity are promising, their suitability for displays remains limited because of the high sheet resistance, which is caused by undesirable flake junctions and surface roughness. Herein, a flexible and transparent electrode has been fabricated that is suitable for a full-solution-processed quantum dot light-emitting diode (QLED). An MXene-silver nanowire (AgNW) hybrid electrode (MXAg) consists of a highly conductive AgNW network mixed with solution-processed MXene flakes. Efficient welding of wire-to-wire junctions with MXene flakes yields an electrode with a low sheet resistance and a high transparency of approximately 13.9 ω sq-1and 83.8%, respectively. By employing a thin polymer buffer layer of poly(methyl methacrylate) (PMMA), followed by mild thermal treatment, a hybrid PMMA-based MXene-AgNW (MXAg@PMMA) electrode in which the work function of an MXAg hybrid FTE physically embedded in PMMA (MXAg@PMMA) can be tuned by controlling the amount of MXene in the hybrid film facilitates the development of a high-performance solution-processed QLED that exhibits maximum external quantum and current efficiencies of approximately 9.88% and 25.8 cd/A, respectively, with excellent bending stability. This work function-tunable flexible transparent electrode based on solution-processed nanoconductors provides a way to develop emerging high-performance, wearable, cost-effective, and soft electroluminescent devices.
AB - The development of electrodes with high conductivity, optical transparency, and reliable mechanical flexibility and stability is important for numerous solution-processed photoelectronic applications. Although transparent Ti3C2TXMXene electrodes with high conductivity are promising, their suitability for displays remains limited because of the high sheet resistance, which is caused by undesirable flake junctions and surface roughness. Herein, a flexible and transparent electrode has been fabricated that is suitable for a full-solution-processed quantum dot light-emitting diode (QLED). An MXene-silver nanowire (AgNW) hybrid electrode (MXAg) consists of a highly conductive AgNW network mixed with solution-processed MXene flakes. Efficient welding of wire-to-wire junctions with MXene flakes yields an electrode with a low sheet resistance and a high transparency of approximately 13.9 ω sq-1and 83.8%, respectively. By employing a thin polymer buffer layer of poly(methyl methacrylate) (PMMA), followed by mild thermal treatment, a hybrid PMMA-based MXene-AgNW (MXAg@PMMA) electrode in which the work function of an MXAg hybrid FTE physically embedded in PMMA (MXAg@PMMA) can be tuned by controlling the amount of MXene in the hybrid film facilitates the development of a high-performance solution-processed QLED that exhibits maximum external quantum and current efficiencies of approximately 9.88% and 25.8 cd/A, respectively, with excellent bending stability. This work function-tunable flexible transparent electrode based on solution-processed nanoconductors provides a way to develop emerging high-performance, wearable, cost-effective, and soft electroluminescent devices.
KW - TiCTMXene silver nanowire hybrid electrode
KW - flexible and transparent electrodes
KW - flexible quantum dot light-emitting diodes
KW - large-area solution-processed electrodes
KW - work function tunable electrode
UR - http://www.scopus.com/inward/record.url?scp=85131581928&partnerID=8YFLogxK
U2 - 10.1021/acsnano.2c01514
DO - 10.1021/acsnano.2c01514
M3 - Article
C2 - 35588151
AN - SCOPUS:85131581928
SN - 1936-0851
VL - 16
SP - 9203
EP - 9213
JO - ACS Nano
JF - ACS Nano
IS - 6
ER -