Blue Organic Light-Emitting Diodes Operated Only by a 1.5 V Battery

Seiichiro Izawa; Masahiro Morimoto; Shigeki Naka; Masahiro Hiramoto

Presentation information

Oral presentation

12 Organic Molecules and Bioelectronics » 12.4 Organic light-emitting devices and organic transistors

[15p-E402-1~18] 12.4 Organic light-emitting devices and organic transistors

Wed. Mar 15, 2023 1:00 PM - 6:00 PM E402 (Building No. 12)

Shigeki Naka(Univ. of Toyama), Hajime Nakanotani(Kyushu Univ.), Hirohiko Fukagawa(NHK)

3:00 PM - 3:15 PM

[15p-E402-8] Blue Organic Light-Emitting Diodes Operated Only by a 1.5 V Battery

〇Seiichiro Izawa^1,2, Masahiro Morimoto³, Shigeki Naka³, Masahiro Hiramoto^4,5 (1.Tokyo Tech, 2.JST PRESTO, 3.Univ. Toyama, 4.IMS, 5.SOKENDAI)

Keywords:Organic light-emitting diode, Interface, Blue emission

We have developed a blue organic light-emitting diodes that can be operated by a extremely low voltage, by utilizing the upconversion process via the generation of charge transfer states at the organic semiconductor interface, energy transfer to the triplet exciton, and triplet-triplet annihilation. The device emits blue light at 462 nm when a 1.5 V battery is connected, and reaches a luminance at 100 cd/m2 when 1.97 V is applied.