Bright and Efficient Light-Emitting Devices Based on 2D Transition Metal Dichalcogenides

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

10 Scopus Citations
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Author(s)

  • Tanveer Ahmed
  • Kris KH Lin
  • Hao-Chung Kuo
  • Der-Hsien Lien

Detail(s)

Original languageEnglish
Article number2208054
Journal / PublicationAdvanced Materials
Volume35
Issue number31
Online published20 Feb 2023
Publication statusPublished - 3 Aug 2023

Abstract

2D monolayer transition metal dichalcogenides (TMDCs) show great promise for the development of next-generation light-emitting devices owing to their unique electronic and optoelectronic properties. The dangling-bond-free surface and direct-bandgap structure of monolayer TMDCs allow for near-unity photoluminescence quantum efficiencies. The excellent mechanical and optical characteristics of 2D TMDCs offer great potential to fabricate TMDC-based light-emitting diodes (LEDs) featuring good flexibility and transparency. Great progress has been made in the fabrication of bright and efficient LEDs with varying device structures. In this review, the aim is to provide a comprehensive summary of the state-of-the-art progress made in the construction of bright and efficient LEDs based on 2D TMDCs. After a brief introduction to the research background, the preparation of 2D TMDCs used for LEDs is briefly discussed. The requirements and the corresponding challenges to achieve bright and efficient LEDs based on 2D TMDCs are introduced. Thereafter, various strategies to enhance the brightness of monolayer 2D TMDCs are described. Following that, the carrier-injection schemes enabling bright and efficient TMDC-based LEDs along with the device performance are summarized. Finally, the challenges and future prospects regarding the accomplishment of TMDC-LEDs with ultimate brightness and efficiency are discussed. © 2023 Wiley-VCH GmbH.

Research Area(s)

  • 2D materials, carrier injection, light-emitting diodes, quantum efficiency, transition metal dichalcogenides

Citation Format(s)

Bright and Efficient Light-Emitting Devices Based on 2D Transition Metal Dichalcogenides. / Ahmed, Tanveer; Zha, Jiajia; Lin, Kris KH et al.
In: Advanced Materials, Vol. 35, No. 31, 2208054, 03.08.2023.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review