TY - JOUR

T1 - Luminescent High-Mobility 2D Organic Semiconductor Single Crystals

AU - Fedorenko, Roman S.

AU - Kuevda, Alexey V.

AU - Trukhanov, Vasiliy A.

AU - Konstantinov, Vladislav G.

AU - Sosorev, Andrey Yu

AU - Sonina, Alina A.

AU - Kazantsev, Maxim S.

AU - Surin, Nikolay M.

AU - Grigorian, Souren

AU - Borshchev, Oleg V.

AU - Ponomarenko, Sergey A.

AU - Paraschuk, Dmitry Yu

N1 - Funding Information: Synthesis of the compounds was made in Institute of Synthetic Polymeric Materials (ISPM RAS) with the financial support from Ministry of Science and Higher Education of Russian Federation (topic 0071‐2021‐0005). NMR and UV–vis spectra registration in solution were performed using the equipment of Collaborative Access Center “Center for Polymer Research” of ISPM RAS. The DFT calculations and experimental work on 2D films and devices were supported by Russian Science Foundation (grant #18‐12‐00499) and were performed in ISPM RAS. The experiments on films were done by using the equipment purchased under the Lomonosov Moscow State University Program of Development. CV and PXRD studies were supported by the State Assignment of Ministry of Science and Higher Education of Russian Federation (project #1021052605814‐9‐1.4.1), the PXRD measurements were carried out at the Research and Education Center of the Novosibirsk State University REC‐008. S.G. is grateful to the Department of Chemistry, University Sapienza of Rome, for hosting his research stays as a visiting professor (Sapienza Visiting professors grant) and BL9 beamline scientists, DELTA synchrotron, Dortmund. R.S.F. thanks the Theoretical Physics and Mathematics Advancement Foundation BASIS for support of his Ph.D. studies. The authors thank P. V. Dmitryakov for TGA and DSC measurements, V. V. Bruevich for discussion of AFM and PL results on 2D films, and E. A. Losev for his assistance with PXRD measurements. Publisher Copyright: © 2022 Wiley-VCH GmbH

PY - 2022/7

Y1 - 2022/7

N2 - 2D organic semiconductor single crystals comprising one or a few molecular layers of macroscopic lateral sizes are ideal materials for ultrathin, flexible, and transparent field-effect devices—a platform for transistors and sensors. In recent years, these 2D materials have demonstrated high performance not inferior to their 3D counterparts. However, light emissive properties of 2D organic semiconductor single crystals have not yet been reported, and a combination of high charge-carrier mobility and bright luminescence in one material is still a challenge for 2D organic optoelectronics. Emissive high-mobility 2D organic semiconductor based on a [1]benzothieno[3,2-b]benzothiophene (BTBT)-derivative, 2,7-bis(4-decylphenyl)[1]benzothieno[3,2-b][1]benzothiophene (DPBTBT), is presented here. DPBTBT molecules self-organize in large-area ultrathin single-crystalline films consisting of one or a few molecular layers. These 2D single crystals perfectly suit as an active layer of organic field-effect transistors in full accordance with Shockley's model and uniquely combine the high charge-carrier mobility reaching 7.5 cm2 V–1 s–1 with prominent light emissive properties, which allow a demonstration of the first 2D organic light-emitting transistor. The high charge-carrier mobility and thermal stability of the crystalline phases, pronounced luminescence, and good shelf-life stability suggest that emissive BTBT-type molecules are a promising avenue for 2D organic optoelectronics.

AB - 2D organic semiconductor single crystals comprising one or a few molecular layers of macroscopic lateral sizes are ideal materials for ultrathin, flexible, and transparent field-effect devices—a platform for transistors and sensors. In recent years, these 2D materials have demonstrated high performance not inferior to their 3D counterparts. However, light emissive properties of 2D organic semiconductor single crystals have not yet been reported, and a combination of high charge-carrier mobility and bright luminescence in one material is still a challenge for 2D organic optoelectronics. Emissive high-mobility 2D organic semiconductor based on a [1]benzothieno[3,2-b]benzothiophene (BTBT)-derivative, 2,7-bis(4-decylphenyl)[1]benzothieno[3,2-b][1]benzothiophene (DPBTBT), is presented here. DPBTBT molecules self-organize in large-area ultrathin single-crystalline films consisting of one or a few molecular layers. These 2D single crystals perfectly suit as an active layer of organic field-effect transistors in full accordance with Shockley's model and uniquely combine the high charge-carrier mobility reaching 7.5 cm2 V–1 s–1 with prominent light emissive properties, which allow a demonstration of the first 2D organic light-emitting transistor. The high charge-carrier mobility and thermal stability of the crystalline phases, pronounced luminescence, and good shelf-life stability suggest that emissive BTBT-type molecules are a promising avenue for 2D organic optoelectronics.

KW - 2D organic semiconductors

KW - charge-carrier mobility

KW - organic crystals luminescence

KW - organic field-effect transistors

KW - organic light-emitting transistors

KW - organic semiconductor monolayers

UR - http://www.scopus.com/inward/record.url?scp=85126038951&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/1c9305dc-53dd-3b2b-802d-16112ff4aa8b/

U2 - 10.1002/aelm.202101281

DO - 10.1002/aelm.202101281

M3 - Article

AN - SCOPUS:85126038951

VL - 8

JO - Advanced Electronic Materials

JF - Advanced Electronic Materials

SN - 2199-160X

IS - 7

M1 - 2101281

ER -