Graphene Quantum Dot Vertical Cavity Surface-Emitting Lasers

Ya Ju Lee, Ting Wei Yeh, Chen Zou, Zu Po Yang, Jia Wen Chen, Pei Lun Hsu, Ji Lin Shen, Chun Chieh Chang, Jinn Kong Sheu, Lih Y. Lin

Research output: Contribution to journalArticle

Abstract

Nonzero-bandgap graphene quantum dots (GQDs) are novel optical gain materials promising for solution-processed light sources with high cost efficiency and device performance. Currently, there have only been a few reports on the realization of GQDs-based lasers. Herein, we demonstrate for the first time room-temperature lasing emission with green gamut from GQDs in a vertical optical cavity composed of Ta2O5/SiO2 dielectric distributed Bragg reflectors (DBRs). The lasing is enabled by the unique design of the DBR, which not only provides a wide stopband spectrally overlapping with the emission of the GQDs but also allows high transmittance of optical excitation in the UV-light region. This demonstration is a clear evidence of the use of GQDs as optical gain materials and represents an important step forward toward their potential applications in wide-gamut laser displays and projectors.

Original languageEnglish
Pages (from-to)2894-2901
Number of pages8
JournalACS Photonics
Volume6
Issue number11
DOIs
Publication statusPublished - 2019 Nov 20

    Fingerprint

Keywords

  • Distributed Bragg Reflectors (DBRs)
  • Graphene Quantum Dots
  • Green Gap
  • Microwave-Assisted Hydrothermal Method
  • Vertical Cavity Surface-Emitting Laser

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biotechnology
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Lee, Y. J., Yeh, T. W., Zou, C., Yang, Z. P., Chen, J. W., Hsu, P. L., Shen, J. L., Chang, C. C., Sheu, J. K., & Lin, L. Y. (2019). Graphene Quantum Dot Vertical Cavity Surface-Emitting Lasers. ACS Photonics, 6(11), 2894-2901. https://doi.org/10.1021/acsphotonics.9b00976