High‐efficiency quantum dot light‐emitting diodes with blue cadmium‐free quantum dots. Issue 5 (13th April 2020)

• Record Type: Journal Article
• Authors: 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
• Is Part Of: Journal of the Society for Information Display. Volume 28:Issue 5(2020)
• Page Start: 401
• Page End: 409
• Publication Date: 2020-04-13
• Subjects: blue quantum dot -- cadmium‐free -- EQE -- QD‐LED; Information display systems -- Periodicals; 621.38154205
• DOI: 10.1002/jsid.896
• Languages: English
• ISSNs: 1071-0922

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. 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%.