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We fabricated an InGaN based nanorod LED structure with colloidal quantum-dot (QD) phosphors deposited in between the nanorods, creating side-wall coupling between QD phosphors and InGaN multiple-quantum-well (MQW) emitters. Time-resolved photoluminescence measurements for nanorod structures with and without colloidal QD coating were performed to study the direct MQW-to-QD non-radiative energy transfer.
We report the first demonstration of mechanically flexible quantum dot light-emitting-diodes (QD-LEDs) of all three RGB primary colors. The efficiencies of the flexible devices are high, suggesting the intrinsic flexibility of the QD-based optoelectronic devices.
We report the first demonstration of mechanically flexible quantum dot light-emitting-diodes (QD-LEDs) of all three RGB primary colors. The efficiencies of the flexible devices are high, suggesting the intrinsic flexibility of the QD-based optoelectronic devices.
We investigate the high-speed modulation characteristics of quantum dots in red emitting quantum dot-light emitting diodes, in which the -3dB cutoff frequency for 6-mm2 device is 1.5 MHz under optimized conditions. The introduction of a positive offset DC bias voltage greatly increases the modulation speed at low applied voltage range.
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