Highly efficient organic light emitting diodes based on a D–A–D type dibenzothiophene derivative exhibiting thermally activated delayed fluorescence with small ΔEST. Issue 43 (14th October 2016)

• Record Type: Journal Article
• Authors: He, Xin; Shan, Tong; Tang, Xiangyang; Gao, Yu; Li, Jinyu; Yang, Bing; Lu, Ping
• Is Part Of: Journal of materials chemistry. Volume 4:Issue 43(2016)
• Page Start: 10205
• Page End: 10208
• Publication Date: 2016-10-14
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c6tc03382b
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : DPAC–DBTDO possesses a very small Δ E ST of 0.10 eV between S1 and T1 . A high external quantum efficiency of 13.1% is achieved in multi-layered OLEDs. Abstract : A new D–A–D type TADF material, namely DPAC–DBTDO, is constructed using 9, 9-diphenyl-9, 10-dihydroacridine as an electron donor and dibenzo[ b, d ]thiophene-5, 5-dioxide as an electron acceptor. DPAC–DBTDO possesses a very small Δ E ST of 0.10 eV between S1 and T1, which is the lowest value among DBTDO-derivatives. DPAC–DBTDO exhibits nearly 100% solid-state efficiency. A high external quantum efficiency of 13.1% is also achieved in multi-layered OLEDs.