Microsecond triplet emission from organic chromophore-transition metal dichalcogenide hybrids via through-space spin orbit proximity effect

Jinho Choi; Healin Im; Jung-Moo Heo; Do Wan Kim; Hanjie Jiang; Alexander Stark; Wenhao Shao; Paul M Zimmerman; Gi Wan Jeon; Jae-Won Jang; Euy Heon Hwang; Sunkook Kim; Dong Hyuk Park; Jinsang Kim

doi:10.1038/s41467-024-51501-8

Microsecond triplet emission from organic chromophore-transition metal dichalcogenide hybrids via through-space spin orbit proximity effect

Nat Commun. 2024 Dec 2;15(1):10282. doi: 10.1038/s41467-024-51501-8.

Authors

Jinho Choi^#^{1

2

3}, Healin Im^#^{4

5}, Jung-Moo Heo³, Do Wan Kim⁶, Hanjie Jiang⁷, Alexander Stark⁷, Wenhao Shao⁷, Paul M Zimmerman⁷, Gi Wan Jeon⁸, Jae-Won Jang⁶, Euy Heon Hwang⁹, Sunkook Kim¹⁰, Dong Hyuk Park^{11

12}, Jinsang Kim^{13

14

15

16}

Affiliations

¹ Department of Chemical Engineering, Inha University, Incheon, 22212, Republic of Korea.
² Program in Biomedical Science & Engineering, Inha University, Incheon, 22212, Republic of Korea.
³ Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, 48109, USA.
⁴ School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea.
⁵ Department of Materials Science and Engineering, University of California, Berkeley, CA, 94720, USA.
⁶ Division of System Semiconductor, Dongguk University, Seoul, 04620, Republic of Korea.
⁷ Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA.
⁸ Particle Beam Research Division, Korea Atomic Energy of Research Institute, Gyeongju, 38180, Republic of Korea.
⁹ SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon, 440746, Republic of Korea.
¹⁰ School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 440-746, Republic of Korea. seonkuk@skku.edu.
¹¹ Department of Chemical Engineering, Inha University, Incheon, 22212, Republic of Korea. donghyuk@inha.ac.kr.
¹² Program in Biomedical Science & Engineering, Inha University, Incheon, 22212, Republic of Korea. donghyuk@inha.ac.kr.
¹³ Department of Materials Science and Engineering, University of Michigan, Ann Arbor, MI, 48109, USA. jinsang@umich.edu.
¹⁴ Department of Chemistry, University of Michigan, Ann Arbor, MI, 48109, USA. jinsang@umich.edu.
¹⁵ Macromolecular Science and Engineering, University of Michigan, Ann Arbor, MI, 48109, USA. jinsang@umich.edu.
¹⁶ Biointerfaces Institute, University of Michigan, Ann Arbor, MI, 48109, USA. jinsang@umich.edu.

^# Contributed equally.

Abstract

Efficient light generation from triplet states of organic molecules has been a hot yet demanding topic in academia and the display industry. Herein, we propose a strategy for developing triplet emitter by creating heterostructures of organic chromophores and transition metal dichalcogenides (TMDs). These heterostructures emit microsecond phosphorescence at room temperature, while their organic chromophores intrinsically exhibit millisecond phosphorescence under vibration dissipation-free conditions. This enhancement in phosphorescence is indicative of significantly enhanced spin-orbit coupling efficiency through coupling with TMDs. Through detailed studies on these hybrids from various perspectives, we elucidate key features of each component essential for generating microsecond triplet emission, including 2H-TMDs with heavy transition metals and aromatic carbonyl with an ortho-hydroxy group. Our intriguing findings open avenues for exploring the universal applicability of fast and stable hybrid triplet emitters.

Abstract

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