Journal
NANOSCALE
Volume 9, Issue 38, Pages 14592-14601Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr04392a
Keywords
-
Categories
Funding
- NSFC for Excellent Young Scholars [51422201]
- Program of the NSFC [51732003, 61505026, 61604037, 61574031, 11604044, 51602028, 21501167]
- 111 Project [B13013]
- Fund from Jilin Province [20160520009JH, 20160520115JH, 20160520114JH]
- Fundamental Research Funds for the Central Universities [2412017FZ010, 2412016KJ017]
Ask authors/readers for more resources
Short-wavelength LEDs, a hot research topic in modern optoelectronics, have attracted tremendous attention in recent years because of their great application potential in both civil and military domains. Compared to conventional metallic surface-plasmons (SPs), carbon nanodot (CD) SPs with less optical loss and low cost, broader SP resonant frequency and good biocompatibility are expected to provide more prominent luminescence enhancement for light emitters. Herein, SP-enhanced near-UV emission quantum dot LEDs (Q-LED) were fabricated via introducing CDs into p-GaN/Al2O3/ZnO Q-LEDs by optimizing the molar ratio of ZnO quantum dots to CDs and a significant enhancement (similar to similar to 20-fold) of the near-UV electroluminescence (EL) intensity from the ZnO-based Q-LEDs was achieved. Time-resolved spectroscopy studies reveal that the observed luminescence enhancement arises due to the resonant coupling between ZnO excitons and CD SPs. The current study not only demonstrates a feasible way to acquire near-UV emission from all-inorganic Q-LEDs, but also provides an effective strategy to enhance the EL intensity of these QD light emitters, which can further be extended to other types of light-emitting devices to improve EL efficiency.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available