Förster resonance energy transfer in surface plasmon coupled color conversion processes of colloidal quantum dots
Abstract
Förster resonance energy transfer (FRET) from a green-emitting quantum dot (GQD) into a red-emitting quantum dot (RQD) is an important mechanism in a multiple-color conversion process, particularly under the surface plasmon (SP) coupling condition for enhancing color conversion efficiency. Here, the dependencies of FRET efficiency on the relative concentrations of GQD and RQD in their mixtures and their surface molecule coatings for controlling surface charges are studied. Also, the SP coupling effects induced by two kinds of Ag nanoparticles on the emission behaviors of GQD and RQD are demonstrated, particularly when FRET is involved in the coupling process. FRET efficiency is reduced under the SP coupling condition. SP coupling can enhance the color conversion efficiency of either GQD or RQD. The combination of SP coupling and FRET can be used for controlling the relative converted light intensities in a multiple-color conversion process.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jan 25, 2021
- Source ID
- 10.1364/oe.415679
Entities
People
- Chia-chun Ni
- Chien-yu Chen
- Chih-Chung Yang
- Ruei-nan Wu
- Sheng-yang Kuo
- Shung-hsiang Wu
- Zong-han Li
Organizations
- Air Force Office of Scientific Research
- National Science and Technology Council
- National Taiwan University