摘要
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.
原文 | 英語 |
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頁(從 - 到) | 2894-2901 |
頁數 | 8 |
期刊 | ACS Photonics |
卷 | 6 |
發行號 | 11 |
DOIs | |
出版狀態 | 已發佈 - 2019 11月 20 |
ASJC Scopus subject areas
- 電子、光磁材料
- 生物技術
- 原子與分子物理與光學
- 電氣與電子工程