Polymer light-emitting diodes with MoS<sub>2</sub> and WS<sub>2</sub> hole transport layers: enhanced efficiency and stability
The integration of molybdenum disulfide (MoS 2 ) and tungsten disulfide (WS 2 ) as hole transport layers in polymer light-emitting diodes (PLEDs) is investigated using a wet-transfer method for deposition on indium tin oxide (ITO) substrates. Compared to conventional PEDOT:PSS/ITO anodes, WS 2 /ITO and MoS 2 /ITO devices exhibit enhanced performance, achieving maximum luminance values of 1212 cd/m 2 and 873 cd/m 2 , respectively, exceeding the 721 cd/m 2 of PEDOT:PSS/ITO. Current efficiencies reach 1.63 cd/A (WS 2 /ITO) and 1.35 cd/A (MoS 2 /ITO), surpassing the reference by factors of 2.04 and 1.69. Electroluminescence intensity enhancements of 901% (WS 2 /ITO) and 600% (MoS 2 /ITO) further highlight superior charge transfer and optical properties. These findings demonstrate the potential of MoS 2 and WS 2 as promising alternatives to PEDOT:PSS for efficient and stable PLEDs.
Authors
- Chia-Yuan Chang
- Sy‐Hann Chen (ORCID: https://orcid.org/0000-0001-9671-1584)
- Hai‐Pang Chiang (ORCID: https://orcid.org/0000-0003-0752-175X)
- Yan Huang (ORCID: https://orcid.org/0000-0002-6559-6234)
- Yung‐Huang Chang
Institutions
- National Taiwan Ocean University (TW)
- National Yunlin University of Science and Technology (TW)
Publication Details
- Journal
- Optics Letters
- Published
- 2025-04-25
- DOI
- https://doi.org/10.1364/ol.562978
- Citations
- 1
- Primary Topic
- Organic Light-Emitting Diodes Research
- Type
- article
- Field-Weighted Citation Impact
- 0.73