Near-Infrared Electroluminescence and Low Threshold Amplified Spontaneous Emission above 800 nm from a Thermally Activated Delayed Fluorescent Emitter
- 주제(기타) Chemistry, Physical; Materials Science, Multidisciplinary
- 설명문(일반) [Ye, Hao; Kim, Dae Hyeon; Sandanayaka, Atula S. D.; Kim, Jong Uk; Tsuchiya, Youichi; Ribierre, Jean-Charles; Adachi, Chihaya] Kyushu Univ, Ctr Organ Photon & Elect Res OPERA, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan; [Ye, Hao; Sandanayaka, Atula S. D.; Kim, Jong Uk; Tsuchiya, Youichi; Ribierre, Jean-Charles; Adachi, Chihaya] Kyushu Univ, Ctr Organ Photon & Elect Res OPERA, Japan Sci & Technol Agcy JST, ERATO,Adachi Mol Exciton Engn Project,Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan; [Kim, Dae Hyeon; D'Aleo, Anthony] Inst for Basic Sci Korea, Ctr Quantum Nanosci, Seoul 03760, South Korea; [Chen, Xiankai; Bredas, Jean-Luc] Georgia Inst Technol, Sch Chem & Biochem, Ctr Organ Photon & Elect, Atlanta, GA 30332 USA; [Zaborova, Elena; Canard, Gabriel; Fages, Frederic; D'Aleo, Anthony] Aix Marseille Univ, CNRS, CINaM, UMR 7325, Campus Luminy,Case 913, F-13288 Marseille, France; [Choi, Eun Young; Wu, Jeong Weon] Ewha Womans Univ, Dept Phys, Seoul, South Korea; [Wu, Jeong Weon; D'Aleo, Anthony] Joint CNRS Ewha Yonsei Lab, Bldg Blocks Future Elect Lab FUEL 2B, UMI 2002, Seoul, South Korea; [Ribierre, Jean-Charles] Zhejiang Univ, Coll Opt Sci & Engn, State Key Lab Modern Opt Instrumentat, 38 Zheda Rd, Hangzhou 310027, Peoples R China; [Adachi, Chihaya] Kyushu Univ, Int Inst Carbon Neutral Energy Res WPI I2CNER, Nishi Ku, 744 Motooka, Fukuoka, Fukuoka 8190395, Japan
- 등재 SCIE, SCOPUS
- 발행기관 AMER CHEMICAL SOC
- 발행년도 2018
- URI http://www.dcollection.net/handler/ewha/000000155643
- 본문언어 영어
- Published As http://dx.doi.org/10.1021/acs.chemmater.8b02247
초록/요약
Near-infrared (NIR) organic light-emitting devices have aroused increasing interest because of their potential applications such as information secured displays, photodynamic therapy, and optical telecommunication. While thermally activated delayed fluorescent (TADF) emitters have been used in a variety of high-performance organic light-emitting diodes (OLEDs) emitting in the visible spectral range, efficient NIR TADF materials have been rarely reported. Herein, we designed and synthesized a novel solution-processable NIR TADF dimeric borondifluoride curcuminoid derivative with remarkable photo physical, electroluminescence and amplified spontaneous emission properties. This dye was specifically developed to shift the emission of borondifluoride curcuminoid moiety toward longer wavelengths in the NIR region while keeping a high photoluminescence quantum yield. The most efficient OLED fabricated in this study exhibits a maximum external quantum efficiency of 5.1% for a maximum emission wavelength of 758 nm, which ranks among the highest performance for NIR electroluminescence. In addition, this NIR TADF emitter in doped thin films displays amplified spontaneous emission above 800 nm with a threshold as low as 7.5 mu J/cm(2), providing evidence that this material is suitable for the realization of high-performance NIR organic semiconductor lasers.
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