High‐efficiency quantum dot light‐emitting diodes with blue cadmium‐free quantum dots

Tatsuya Ryowa; Takeshi Ishida; Yusuke Sakakibara; Keisuke Kitano; Masaya Ueda; Makoto Izumi; Yuko Ogura; Masanori Tanaka; Soichiro Nikata; Mayuko Watanabe; Mikihiro Takasaki; Tetsuji Itoh; Akiharu Miyanaga

doi:10.1002/jsid.896

JOURNAL ARTICLE

High‐efficiency quantum dot light‐emitting diodes with blue cadmium‐free quantum dots

Tatsuya Ryowa Takeshi Ishida Yusuke Sakakibara Keisuke Kitano Masaya Ueda Makoto Izumi Yuko Ogura Masanori Tanaka Soichiro Nikata Mayuko Watanabe Mikihiro Takasaki Tetsuji Itoh Akiharu Miyanaga

Year: 2020 Journal: Journal of the Society for Information Display Vol: 28 (5)Pages: 401-409 Publisher: Wiley

DOI: 10.1002/jsid.896

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Abstract

Abstract We report outstanding electroluminescence properties of high‐efficiency blue cadmium‐free quantum dot light‐emitting diodes (QD‐LED). External quantum efficiency (EQE) of 14.7% was achieved for QD‐LED emitting at 428 nm. Furthermore, we developed high‐efficiency and narrow wavelength emission zinc selenide (ZnSe) nanocrystals emitting at 445 nm and achieved QD‐LED with an EQE of 10.7%. These new QDs have great potential to be used in next‐generation QD‐LED display with wide color gamut.

Keywords:

Quantum dot Cadmium selenide Optoelectronics Gamut Light-emitting diode Materials science Electroluminescence Quantum efficiency Diode Zinc selenide Nanocrystal Wavelength Optics Nanotechnology Physics

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Quantum Dots Synthesis And Properties

Physical Sciences → Materials Science → Materials Chemistry

Nanocluster Synthesis and Applications

Physical Sciences → Materials Science → Materials Chemistry

Chalcogenide Semiconductor Thin Films

Physical Sciences → Engineering → Electrical and Electronic Engineering

High‐efficiency quantum dot light‐emitting diodes with blue cadmium‐free quantum dots

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58‐3: Distinguished Paper: High‐Efficient Quantum‐Dot Light‐Emitting Diodes with Blue Cadmium‐free Quantum Dots