Boric acid additive strategy for improving the performance of carbon dot-based light-emitting diodes
Carbon dots (CD)-based light-emitting diodes (LEDs) with low cost, easy acquisition, and environmental friendliness are an emerging display technology worth further exploration. However, it is still a challenge to prepare CD-based LEDs with high performance and spectral modulation. In this study, green-emitting CDs (G-CDs) were prepared into LEDs by the traditional solution method. These G-CD-based LEDs reach maximum brightness and external quantum efficiency of 400 cd/m<sup>2</sup> and 0.02%, respectively. By further introducing boric acid into G-CDs, yellow emitting carbon dots (Y-CDs) were successfully prepared. This additive engineering achieves spectral modulation, and the maximum brightness and external quantum efficiency are close to 2 times and 3 times that of the control device. This study shows the potential of boric acid in optimizing the performance of CD-based LEDs.
Authors
- Min Li (ORCID: https://orcid.org/0000-0001-7790-9739)
- Jinxin Zhao (ORCID: https://orcid.org/0000-0002-9086-0957)
- D. Wang (ORCID: https://orcid.org/0000-0002-9013-1199)
- Xu Li (ORCID: https://orcid.org/0000-0001-6619-0562)
- Zhenzhen Yu
- Xiaoming Li (ORCID: https://orcid.org/0000-0002-7132-8885)
- Peng Wang
- Li Guan
- Jinxing Zhao (ORCID: https://orcid.org/0000-0003-4448-2219)
Institutions
- San’an Optoelectronics (China) (CN)
Publication Details
- Journal
- Optics Letters
- Published
- 2025-05-06
- DOI
- https://doi.org/10.1364/ol.561695
- Primary Topic
- Carbon and Quantum Dots Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China
- Beijing Municipal Natural Science Foundation