[12p-A409-1~14] 12.4 有機EL・トランジスタ

▲ [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)

キーワード：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.