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Author:

Fang, A. (Fang, A..) | Tang, P. (Tang, P..) | Xie, Y. (Xie, Y..) | Du, Z. (Du, Z..) | Guo, W. (Guo, W..) | Mei, Y. (Mei, Y..) | Xu, H. (Xu, H..) | Sun, J. (Sun, J..)

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EI Scopus SCIE

Abstract:

In this paper, a uniform nanorod (NR) array is etched onto the surface of Micro-Light-Emitting-Diodes (µLEDs) and mix Ag nanoparticles (NPs) with QDs to fill the gaps between the nanorods. Simultaneously, the study utilizes graphene to connect individual nanorods and enhance current spreading. The nanorod array's structure significantly reduces the distance between the QDs and the quantum well (QW), reducing energy loss from the excitation light source through a non-radiative energy transfer (NRET) mechanism. Additionally, the Ag NPs function as localized surface plasmons (LSPs), further enhancing the CCE of QDs via the absorption resonance. In this study, the effects of two types of Ag NPs are compared with different absorption resonance peaks on device performance. The results demonstrate that Ag NPs with absorption resonance peaks matching the emission wavelength of QDs play a more crucial role in the system. This configuration achieves a CCE of 77.78% for µLEDs with nanorod arrays, operating at a current of 10 mA. Compared to the conventional µLED structure with QDs only on the surface, the proposed method improves the CCE of µLEDs by an impressive 86.5%. This outcome underscores the significant contribution of the NR structure and LSPs in enhancing the CCE of QD-µLEDs. © 2024 Wiley-VCH GmbH.

Keyword:

micro LED localized surface plasmons non-radiative energy transfer quantum Dots

Author Community:

  • [ 1 ] [Fang A.]Key Laboratory of Optoelectronics Technology, Beijing University of Technology, Beijing, 100124, China
  • [ 2 ] [Tang P.]Key Laboratory of Optoelectronics Technology, Beijing University of Technology, Beijing, 100124, China
  • [ 3 ] [Xie Y.]Key Laboratory of Optoelectronics Technology, Beijing University of Technology, Beijing, 100124, China
  • [ 4 ] [Du Z.]School of Physics and Electronic Information, Weifang University, Weifang, 261061, China
  • [ 5 ] [Guo W.]Key Laboratory of Optoelectronics Technology, Beijing University of Technology, Beijing, 100124, China
  • [ 6 ] [Mei Y.]Key Laboratory of Optoelectronics Technology, Beijing University of Technology, Beijing, 100124, China
  • [ 7 ] [Xu H.]Key Laboratory of Optoelectronics Technology, Beijing University of Technology, Beijing, 100124, China
  • [ 8 ] [Sun J.]Fujian Science and Technology Innovation Laboratory for Optoelectronic Information of China, and College of Physics and Information Engineering, Fuzhou University, Fuzhou, 350100, China
  • [ 9 ] [Sun J.]Quantum Device Physics Laboratory, Department of Microtechnology and Nanoscience, Chalmers University of Technology, Gothenburg, 41296, Sweden

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Source :

Advanced Optical Materials

ISSN: 2195-1071

Year: 2024

Issue: 19

Volume: 12

9 . 0 0 0

JCR@2022

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 1

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 5

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