Inverted All-Inorganic Nanorod-Based Light-Emitting Diodes via Electrophoretic Deposition
High performance and high stability in all-inorganic solution processed nanocrystal-based light-emitting diodes (LEDs) are highly attractive for large area devices compared to organic material-based LEDs. In this work, an inverted all-inorganic LED structure is designed to have an easy integration with thin-film transistors. Adopting robust inorganic materials such as Ni<sub>1-<i>x</i></sub> O nanoparticle films as a hole transport layer (HTL) is beneficial for the performance of LED. Herein, we have optimized the HTL by introducing Mg into Ni<sub>1-<i>x</i></sub> O to bridge the difference in energy offset between the nanorod emissive layer and the HTL, in addition to the advantages of low temperature solubility of Ni<sub>1-<i>x</i></sub> O:Mg nanoparticles. Furthermore, CdSe/CdS-based nanorods via electrophoretic deposition (EPD) are amassed in a vertically aligned (VA-NR) fashion as an emissive layer to facilitate the carrier transportation. Fostering these approaches enabled an EQE of 1.2% of the fabricated device, establishing the viability for further development of efficient and highly stable nanocrystal-based LEDs.
Authors
- Pai Liu (ORCID: https://orcid.org/0000-0002-7877-153X)
- Devika Laishram (ORCID: https://orcid.org/0000-0001-6953-8309)
- Mei‐Yan Gao (ORCID: https://orcid.org/0000-0001-6628-5190)
- Christophe Silien (ORCID: https://orcid.org/0000-0003-0426-2166)
- Kevin M. Ryan (ORCID: https://orcid.org/0000-0003-3670-8505)
- Xiao Wei Sun (ORCID: https://orcid.org/0000-0002-2840-1880)
- Ning Liu (ORCID: https://orcid.org/0000-0003-1164-6387)
- Zhenhui Ma (ORCID: https://orcid.org/0000-0002-7980-2991)
- Tewfik Soulimane (ORCID: https://orcid.org/0000-0002-9628-505X)
- Yongliang Zhang (ORCID: https://orcid.org/0000-0002-9479-9911)
- Lin Lyu (ORCID: https://orcid.org/0000-0001-5759-6907)
- Khizar Hussain Shah (ORCID: https://orcid.org/0000-0002-2405-1449)
- Na Jia (ORCID: https://orcid.org/0000-0002-4983-6891)
Institutions
- Beijing Technology and Business University (CN)
- University of Limerick (IE)
- Southern University of Science and Technology (CN)
Publication Details
- Journal
- ACS Applied Nano Materials
- Published
- 2024-10-07
- DOI
- https://doi.org/10.1021/acsanm.4c03891
- Citations
- 3
- Primary Topic
- Quantum Dots Synthesis And Properties
- Type
- article
- Field-Weighted Citation Impact
- 0.35
Funders
- Science Foundation Ireland
- University of Limerick
- Irish Research Council
- Beijing Technology and Business University
- Southern University of Science and Technology
- Engineering and Physical Sciences Research Council
- Bernal Institute, University of Limerick