Combined effects of surface plasmon coupling and Forster resonance energy transfer on the light color conversion behaviors of colloidal quantum dots on an InGaN/GaN quantum-well nanodisk structure

被引:18
作者
Chen, Yen-Po [1 ,2 ]
Ni, Chia-Chun [1 ,2 ]
Wu, Ruei-Nan [1 ,2 ]
Kuo, Sheng-Yang [1 ,2 ]
Su, Yu-Cheng [1 ,2 ]
Huang, Yang-Yi [1 ,2 ]
Chen, Jia-Wei [1 ,2 ]
Hsu, Yi-Chiao [1 ,2 ]
Wu, Shung-Hsiang [1 ,2 ]
Chen, Chien-Yu [1 ,2 ]
Wu, Ping-Hsiu [1 ,2 ]
Kiang, Yean-Woei [1 ,2 ]
Yang, C. C. [1 ,2 ]
机构
[1] Natl Taiwan Univ, Inst Photon & Optoelect, 1,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan
[2] Natl Taiwan Univ, Dept Elect Engn, 1,Sect 4,Roosevelt Rd, Taipei 10617, Taiwan
关键词
surface plasmon coupling; Forster resonance energy transfer; quantum dot; Ag nanoparticle; color conversion; EMITTING-DIODES; EFFICIENCY ENHANCEMENT; NANOPARTICLES; EMISSION; FRET; FLUORESCENCE; CONFINEMENT;
D O I
10.1088/1361-6528/abd05e
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
By forming nanodisk (ND) structures on a blue-emitting InGaN/GaN quantum-well (QW) template, the QWs become close to the red-emitting quantum dots (QDs) and Ag nanoparticles (NPs) attached onto the sidewalls of the NDs such that Forster resonance energy transfer (FRET) and surface plasmon (SP) coupling can occur to enhance the efficiency of blue-to-red color conversion. With a larger ND height, more QWs are exposed to open air on the sidewall for more QD/Ag NP attachment through QD self-assembly and Ag NP drop casting such that the FRET and SP coupling effects, and hence the color conversion efficiency can be enhanced. A stronger FRET process leads to a longer QD photoluminescence (PL) decay time and a shorter QW PL decay time. It is shown that SP coupling can enhance the FRET efficiency.
引用
收藏
页数:12
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