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

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 s...

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Veröffentlicht in:	Journal of the Society for Information Display 2020-05, Vol.28 (5), p.401-409
Hauptverfasser:	Ryowa, Tatsuya, Ishida, Takeshi, Sakakibara, Yusuke, Kitano, Keisuke, Ueda, Masaya, Izumi, Makoto, Ogura, Yuko, Tanaka, Masanori, Nikata, Soichiro, Watanabe, Mayuko, Takasaki, Mikihiro, Itoh, Tetsuji, Miyanaga, Akiharu
Format:	Artikel
Sprache:	eng
Schlagworte:	blue quantum dot Cadmium cadmium‐free Efficiency Electroluminescence EQE Light emitting diodes Nanocrystals QD‐LED Quantum dots Quantum efficiency
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Zusammenfassung:	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. 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%.
ISSN:	1071-0922 1938-3657
DOI:	10.1002/jsid.896