Efficient Interfacial Upconversion Enabling Bright Emission at an Extremely Low Driving Voltage in Organic Light‐Emitting Diodes (Advanced Optical Materials 4/2022). Issue 4 (18th February 2022)

• Record Type: Journal Article
• Authors: Izawa, Seiichiro; Morimoto, Masahiro; Naka, Shigeki; Hiramoto, Masahiro
• Is Part Of: Advanced optical materials. Volume 10:Issue 4(2022)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2022-02-18
• Subjects: charge transfer states -- donor/acceptor interface -- driving voltage -- organic light‐emitting diodes -- upconversion; Optical materials -- Periodicals; Photonics -- Periodicals; 620.11295
• DOI: 10.1002/adom.202270013
• Languages: English
• ISSNs: 2195-1071

Abstract

Abstract : In article number 2101710, Seiichiro Izawa, Masahiro Morimoto, Shigeki Naka, and Masahiro Hiramoto report an efficient organic light‐emitting diode (OLED), operable by a 1.5‐V battery, that produces bright emission equivalent to the luminance of a typical display. The OLED is based on an upconversion transition through triplet–triplet annihilation near its donor/acceptor interface. The efficient upconversion is realized by controlling the character of an interfacial charge transfer state, which is a key intermediate.