Strongly polarized surface electroluminescence from an organic light-emitting transistor

Strongly polarized surface electroluminescence from an organic light-emitting transistor Full article

Journal

Materials Chemistry Frontiers
ISSN: 2052-1537

Output data

Year: 2023, Volume: 7, Number: 2, Pages: 238-248 Pages count : 11 DOI: 10.1039/d2qm01046a

Authors

Trukhanov Vasiliy A. ^1,2 , Kuevda Alexey V. ^1,2 , Dominskiy Dmitry I. ^1,2 , Mannanov Artur L. ^1,2 , Rybalova Tatyana V. ⁴ , Tafeenko Victor A. ⁵ , Sosorev Andrey Yu. ^1,2 , Konstantinov Vladislav G. ^1,2 , Kazantsev Maxim S. ⁴ , Borshchev Oleg V. ² , Ponomarenko Sergey A. ^2,5 , Pshenichnikov Maxim S. ³ , Paraschuk Dmitry Yu. ^1,2

Affiliations

1	Lomonosov Moscow State University
2	Enikolopov Institute of Synthetic Polymeric Materials Federal State Institution of Science Institute of Synthetic Polymeric Materials. NS Yenikolopov Russian Academy of Sciences
3	Optical Condensed Matter Physics Group, Zernike Institute for Advanced Materials, Rijksuniversiteit Groningen
4	N.N. Vorozhtsov Novosibirsk Institute of Organic Chemistry of Siberian Branch of Russian Academy of Sciences
5	Lomonosov Moscow State University

Funding (1)

Российский Научный Фонд

20-73-10090

Emissive materials that radiate polarized light are in high demand for a broad variety of light-emitting electronic devices. In organic light-emitting devices—light-emitting diodes and transistors—highly polarized emission from the device surface, the surface emission, can be achieved by the in-plane co-linear orientation of molecular transition dipole moments (TDMs) in the device active layer. Furthermore, such a TDM arrangement strongly alleviates the waveguiding effect, enhancing the performance of the device. In this work, we report the first practical implementation of these ideas in an organic light-emitting transistor. Highly emissive semiconductor single crystals were grown from a thiophene–phenylene co-oligomer 1,4-bis{5-[4-(trimethylsilyl)phenyl]thiophen-2-yl}benzene (TMS-PTPTP-TMS) with trimethylsilyl (TMS) terminal substituents, which promote the in-plane TDM orientation. Organic light-emitting transistors based on TMS-PTPTP-TMS showed ambipolar charge transport with efficient electroluminescence, and the single-crystal devices demonstrated linearly polarized electroluminescence with the polarization degree of 0.78 ± 0.06. The observed polarization properties of both electro- and photoluminescence are in full agreement with the solved crystal structure and the corresponding calculations. Our findings indicate that smart control of in-plane ordered TDMs via molecular packing is a promising approach to designing materials for highly efficient light-emitting electronic devices.

Trukhanov V.A. , Kuevda A.V. , Dominskiy D.I. , Mannanov A.L. , Rybalova T.V. , Tafeenko V.A. , Sosorev A.Y. , Konstantinov V.G. , Kazantsev M.S. , Borshchev O.V. , Ponomarenko S.A. , Pshenichnikov M.S. , Paraschuk D.Y.
Strongly polarized surface electroluminescence from an organic light-emitting transistor
Materials Chemistry Frontiers. 2023. V.7. N2. P.238-248. DOI: 10.1039/d2qm01046a WOS РИНЦ

Accepted:	Nov 28, 2022
Published online:	Nov 29, 2022

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