[12p-A409-1~14] 12.4 Organic light-emitting devices and organic transistors

▲ [12p-A409-7] Enhancing Stability of Exciplex-based OLED by Utilizing TADF-type Acceptor

〇(M2)Thanh Ba Nguyen¹, Hajime Nakanotani^1,2,3, Takuji Hatakeyama⁴, Chihaya Adachi^1,2,3 (1.OPERA, Kyushu Univ, 2.JST-ERATO, 3.I2-CNER, 4.Kwansei Gakuin Univ)

Keywords:organic light-emitting diodes, exciplex, operational stability

Exciplex systems exhibiting thermally activated delayed fluorescence (TADF) hold a great potential to improve organic light-emitting diode (OLED) performances.However, the operational lifetime of current exciplex-based devices, unfortunately, falls far behind the requirement for commercialization. Herein, unwanted charge recombination on exciplex acceptor was proposed as a possible degradation mechanism. To solve this problem, TADF-type acceptor was utilized and resulted in a three-fold increase in device lifetime.