Enhanced Color-Conversion Efficiency of Hybrid Nanostructured-Cavities InGaN/GaN Light-Emitting Diodes Consisting of Nontoxic InP Quantum Dots

Color-conversion efficiency enhancement of hybrid light-emitting diodes (LEDs) by cadmium-free colloidal quantum dots (QDs) and a novel selective area nanocavities structure has been demonstrated. Combining nanoimprinting and photolithography techniques, nanocavities array can be fabricated at desig...

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Published inIEEE journal of selected topics in quantum electronics Vol. 23; no. 5; pp. 1 - 7
Main Authors Liu, Che-Yu, Chen, Tzu-Pei, Huang, Jhih-Kai, Lin, Tzu-Neng, Huang, Chia-Yen, Li, Xiu-Ling, Kuo, Hao-Chung, Shen, Ji-Lin, Chang, Chun-Yen
Format Journal Article
LanguageEnglish
Published IEEE 01.09.2017
Subjects
Absorption
colloidal quantum dots
Energy exchange
energy transfer
III-V semiconductor materials
Indium phosphide
Light emitting diodes
Lithography
nanotechnology
optoelectronic devices
Quantum dots
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Abstract Color-conversion efficiency enhancement of hybrid light-emitting diodes (LEDs) by cadmium-free colloidal quantum dots (QDs) and a novel selective area nanocavities structure has been demonstrated. Combining nanoimprinting and photolithography techniques, nanocavities array can be fabricated at designated locations on the LEDs. The color-conversion efficiency of selective area nanocavities LED can be enhanced by up to 13%. The significant color-conversion efficiency enhancement is attributed to resonance of InP QDs emission in nanocavities and nonradiative energy transfer from LED active layers to InP QDs, which has been investigated and characterized by finite domain time-domain simulation, electroluminescence, and time-resolved photoluminescence measurements. This hybrid nanostructured device, therefore, exhibits a great potential for the applications of multicolor lighting sources and micro-LED.
AbstractList Color-conversion efficiency enhancement of hybrid light-emitting diodes (LEDs) by cadmium-free colloidal quantum dots (QDs) and a novel selective area nanocavities structure has been demonstrated. Combining nanoimprinting and photolithography techniques, nanocavities array can be fabricated at designated locations on the LEDs. The color-conversion efficiency of selective area nanocavities LED can be enhanced by up to 13%. The significant color-conversion efficiency enhancement is attributed to resonance of InP QDs emission in nanocavities and nonradiative energy transfer from LED active layers to InP QDs, which has been investigated and characterized by finite domain time-domain simulation, electroluminescence, and time-resolved photoluminescence measurements. This hybrid nanostructured device, therefore, exhibits a great potential for the applications of multicolor lighting sources and micro-LED.
Author Xiu-Ling Li
Ji-Lin Shen
Che-Yu Liu
Chia-Yen Huang
Chun-Yen Chang
Tzu-Pei Chen
Jhih-Kai Huang
Tzu-Neng Lin
Hao-Chung Kuo
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SubjectTerms Absorption
colloidal quantum dots
Energy exchange
energy transfer
III-V semiconductor materials
Indium phosphide
Light emitting diodes
Lithography
nanotechnology
optoelectronic devices
Quantum dots
Title Enhanced Color-Conversion Efficiency of Hybrid Nanostructured-Cavities InGaN/GaN Light-Emitting Diodes Consisting of Nontoxic InP Quantum Dots
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Volume 23
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