TY - JOUR
T1 - Enhanced Color-Conversion Efficiency of Hybrid Nanostructured-Cavities InGaN/GaN Light-Emitting Diodes Consisting of Nontoxic InP Quantum Dots
AU - Liu, Che Yu
AU - Chen, Tzu Pei
AU - Huang, Jhih Kai
AU - Lin, Tzu Neng
AU - Huang, Chia Yen
AU - Li, Xiu Ling
AU - Kuo, Hao Chung
AU - Shen, Ji Lin
AU - Chang, Chun Yen
N1 - Manuscript received November 17, 2016; revised June 19, 2017 and July 26, 2017; accepted August 31, 2017. Date of publication September 7, 2017; date of current version September 19, 2017. This work was supported by the Ministry of Science and Technology, Taiwan. (Corresponding author: Che-Yu Liu.) C.-Y. Liu, T.-P. Chen, J.-K. Huang, C.-Y. Huang, and H.-C. Kuo are with the Department of Photonics, Institute of Electro-Optical Engineering, National Chiao Tung University, Hsinchu 300, Taiwan (e-mail: cheyu.liu0801@ gmail.com; [email protected]; [email protected]; [email protected]; [email protected]).
PY - 2017/9/1
Y1 - 2017/9/1
N2 - 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.
AB - 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.
KW - Light emitting diodes
KW - colloidal quantum dots
KW - energy transfer
KW - nanotechnology
KW - optoelectronic devices
UR - https://www.scopus.com/pages/publications/85029147429
UR - https://www.scopus.com/inward/citedby.url?scp=85029147429&partnerID=8YFLogxK
U2 - 10.1109/JSTQE.2017.2749973
DO - 10.1109/JSTQE.2017.2749973
M3 - Article
AN - SCOPUS:85029147429
SN - 0792-1233
VL - 23
JO - IEEE Journal of Selected Topics in Quantum Electronics
JF - IEEE Journal of Selected Topics in Quantum Electronics
IS - 5
M1 - 8027032
ER -