Near-ultraviolet organic light emitting diodes using melem

被引：3
|
作者：
Minamide, Hiroki [1 ]
Yamazaki, Taiki [1 ]
Kiuchi, Hiroki [1 ]
Moue, Rena [1 ]
Sonoda, Yoriko [2 ]
Kanai, Kaname [1 ]
机构：
[1] Tokyo Univ Sci, Fac Sci & Technol, Dept Phys, 2641 Yamazaki, Noda, Chiba 2788510, Japan
[2] Natl Inst Adv Ind Sci & Technol, Res Inst Adv Elect & Photon, Higashi 1-1-1, Tsukuba, Ibaraki 3058565, Japan
来源：
CHEMICAL PHYSICS LETTERS | 2023年 / 815卷
关键词：
Organic light-emitting diode (OLED); Melem; Near-ultraviolet light emission; DEVICES; BLUE; INJECTION;
D O I：
10.1016/j.cplett.2023.140367
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
This study fabricates near-ultraviolet (NUV)-organic light-emitting diodes (NUV-OELDs) using 2,5,8-triamino-tri-s-triazine (melem) as the emitting layer. Melem exhibits NUV emission owing to thermally activated delayed fluorescence. However, the highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO--LUMO) gap of melem is large, thus rendering difficulty in carrier injection from the electrodes and causing the carrier injection layer or carrier transport layer to emit light. Therefore, in this study, the device structure of the NUV-OLED is optimized to obtain melem-derived luminescence using carrier transport materials with a large HOMO-LUMO gap. Consequently, NUV-OLED with emission in the NUV region is successfully realized.
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页数：6
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