Browsing by Author "Hong, Ming-Hui"

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Laser-patterned Array with Aerosol-jet Printing Quantum-dots for Novel White Light Source
(2016)
Wang, Sheng-Wen
;
Lin, Huang-Yu
;
Lin, Chien-Chung
;
Kao, Tsung Sheng
;
Chen, Kuo-Ju
Through the laser-ablation and aerosol-jet printing techniques, a novel photoluminescent quantum-dots device with microscale patterns has been demonstrated as a white-light emitting source with stable emission at different driving currents and larger color productivity domain.
Pulsed-laser micropatterned quantum-dot array for white light source
(2016-03-23)
Wang, Sheng-Wen
;
Lin, Huang-Yu
;
Lin, Chien-Chung
;
Kao, Tsung Sheng
;
Chen, Kuo-Ju
In this study, a novel photoluminescent quantum dots device with laser-processed microscale patterns has been demonstrated to be used as a white light emitting source. The pulsed laser ablation technique was employed to directly fabricate microscale square holes with nano-ripple structures onto the sapphire substrate of a flip-chip blue light-emitting diode, confining sprayed quantum dots into well-defined areas and eliminating the coffee ring effect. The electroluminescence characterizations showed that the white light emission from the developed photoluminescent quantum-dot light-emitting diode exhibits stable emission at different driving currents. With a flexibility of controlling the quantum dots proportions in the patterned square holes, our developed white-light emitting source not only can be employed in the display applications with color triangle enlarged by 47% compared with the NTSC standard, but also provide the great potential in future lighting industry with the correlated color temperature continuously changed in a wide range.