Optimization of electro-luminescence performance of silicon quantum dots based light-emitting-diode

AbstractThis work presents a method for obtaining a color-converted red light source through a combination of a blue GaN light-emitting diode and a red fluorescent color conversion film of a perovskite CsPbI3/TOPO composite. High-quality CsPbI3 quantum dots (QDs) were prepared using the hot-injection method. The colloidal QD solutions were mixed with different ratios of trioctylphosphine oxide (TOPO) to form nanowires. The color conversion films prepared by the mixed ultraviolet resin and colloidal solutions were coated on blue LEDs. The optical and electrical properties of the devices were measured and analyzed at an injection current of 50 mA; it was observed that the strongest red light intensity was 93.1 cd/m2 and the external quantum efficiency was 5.7% at a wavelength of approximately 708 nm when CsPbI3/TOPO was 1:0.35.

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Solution-Processed White Light-Emitting Diode Utilizing Hybrid Polymer and Red–Green–Blue Quantum Dots

Japanese Journal of Applied Physics ◽

10.1143/jjap.51.09mh03 ◽

2012 ◽

Vol 51 ◽

pp. 09MH03

Author(s):

Byoung Wook Kwon ◽

Dong Ick Son ◽

Dong-Hee Park ◽

Heon-Jin Choi ◽

Won-Kook Choi

Keyword(s):

Quantum Dots ◽

White Light ◽

Light Emitting Diode ◽

Hybrid Polymer ◽

Solution Processed ◽

Light Emitting

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25.1: Invited Paper: Quantum dots based full-color display on micro-light-emitting-diode technology

SID Symposium Digest of Technical Papers ◽

10.1002/sdtp.12698 ◽

2018 ◽

Vol 49 ◽

pp. 267-270 ◽

Cited By ~ 1

Author(s):

CHIH-HAO LIN ◽

CHUN-FU LEE ◽

CHIEN-CHUNG LIN ◽

CHEN-HSIEN CHU ◽

CHIN-WEI SHER ◽

...

Keyword(s):

Quantum Dots ◽

Light Emitting Diode ◽

Light Emitting ◽

Color Display ◽

Full Color

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Use of Hybrid PEDOT:PSS/Metal Sulfide Quantum Dots for a Hole Injection Layer in Highly Efficient Green Phosphorescent Organic Light-Emitting Diodes

Frontiers in Chemistry ◽

10.3389/fchem.2021.657557 ◽

2021 ◽

Vol 9 ◽

Author(s):

Wenqing Zhu ◽

Kuangyu Ding ◽

Chen Yi ◽

Ruilin Chen ◽

Bin Wei ◽

...

Keyword(s):

Quantum Dots ◽

High Efficiency ◽

Light Emitting Diode ◽

Metal Sulfide ◽

Molybdenum Sulfide ◽

Hole Injection ◽

Light Emitting ◽

Hole Injection Layer ◽

Highly Efficient ◽

Organic Light

In this study, we have synthesized the molybdenum sulfide quantum dots (MoS2 QDs) and zinc sulfide quantum dots (ZnS QDs) and demonstrated a highly efficient green phosphorescent organic light-emitting diode (OLED) with hybrid poly (3,4-ethylenedioxythiophene)/poly (styrenesulfonate) (PEDOT:PSS)/QDs hole injection layer (HIL). The electroluminescent properties of PEDOT:PSS and hybrid HIL based devices were explored. An optimized OLED based on the PEDOT:PSS/MoS2 QDs HIL exhibited maximum current efficiency (CE) of 72.7 cd A−1, which shows a 28.2% enhancement as compared to counterpart with single PEDOT:PSS HIL. The higher device performance of OLED with hybrid HIL can be attributed to the enhanced hole injection capacity and balanced charge carrier transportation in the OLED devices. The above analysis illustrates an alternative way to fabricate the high efficiency OLEDs with sulfide quantum dots as a HIL.

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Developed one-pot synthesis of dual-color CdSe quantum dots for white light-emitting diode application

Journal of Materials Chemistry C ◽

10.1039/c8tc00348c ◽

2018 ◽

Vol 6 (12) ◽

pp. 3089-3096 ◽

Cited By ~ 9

Author(s):

Sheng Dai ◽

Cyuan-Bin Siao ◽

Shu-Ru Chung ◽

Kuan-Wen Wang ◽

Xiaoqing Pan

Keyword(s):

Quantum Dots ◽

White Light ◽

Light Emitting Diode ◽

Cdse Quantum Dots ◽

Cdse Qds ◽

One Pot ◽

Synthetic Process ◽

Light Emitting ◽

One Pot Synthesis ◽

Enhanced Stability

The size and fraction of red and green CdSe QDs can be controlled precisely during the synthetic process, thus manifesting remarkably enhanced stability.

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