Effect of radiative and nonradiative energy transfer processes of light-emitting diodes combined with quantum dots for visible light communication

Though light-emitting diodes (LEDs) combined with various color conversion techniques have been widely explored for VLC (visible light communication), E-O (electro-optical) frequency responses of devices with quantum dots (QDs) embedded within the nanoholes have rarely been addressed. Here we propos...

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Bibliographic Details
Published in:Discover nano 2023-03, Vol.18 (1), p.29-29, Article 29
Main Authors: Chiang, Wen-Hao, Chang, Yu-Hsiang, Lin, Chien-Chung, Kuo, Hao-Chung, Lin, Gong-Ru, Huang, Jian-Jang
Format: Article
Language:English
Subjects:
Bandwidths
Chemistry and Materials Science
Communication
Conversion
Data transmission
Energy
Energy transfer
Keying
Light emitting diodes
Materials Science
Molecular Medicine
Nanochemistry
Nanoscale Science and Technology
Nanotechnology
Nanotechnology and Microengineering
Optical communication
Organic chemicals
Photonic crystals
Photonics
Quantum dots
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Summary:Though light-emitting diodes (LEDs) combined with various color conversion techniques have been widely explored for VLC (visible light communication), E-O (electro-optical) frequency responses of devices with quantum dots (QDs) embedded within the nanoholes have rarely been addressed. Here we propose LEDs with embedded photonic crystal (PhC) nanohole patterns and green light QDs for studying small-signal E-O frequency bandwidths and large signal on–off keying E-O responses. We observe that the E-O modulation quality of PhC LEDs with QDs is better than a conventional LED with QDs when the overall blue mixed with green light output signal is considered. However, the optical response of only QD converted green light shows a contradictory result. The slower E-O conversion response is attributed to multi-path green light generation from both radiative and nonradiative energy transfer processes for QDs coated on the PhC LEDs.
ISSN:2731-9229
1931-7573
2731-9229
1556-276X
DOI:10.1186/s11671-023-03812-w