@article{55540be76f484b86b1888c42c7b4ae47,
title = "Highly Luminescent 2D-Type Slab Crystals Based on a Molecular Charge-Transfer Complex as Promising Organic Light-Emitting Transistor Materials",
abstract = "A new 2:1 donor (D):acceptor (A) mixed-stacked charge-transfer (CT) cocrystal comprising isometrically structured dicyanodistyrylbenzene-based D and A molecules is designed and synthesized. Uniform 2D-type morphology is manifested by the exquisite interplay of intermolecular interactions. In addition to its appealing structural features, unique optoelectronic properties are unveiled. Exceptionally high photoluminescence quantum yield (ΦF ≈ 60%) is realized by non-negligible oscillator strength of the S1 transition, and rigidified 2D-type structure. Moreover, this luminescent 2D-type CT crystal exhibits balanced ambipolar transport (µh and µe of ≈10−4 cm2 V−1 s−1). As a consequence of such unique optoelectronic characteristics, the first CT electroluminescence is demonstrated in a single active-layered organic light-emitting transistor (OLET) device. The external quantum efficiency of this OLET is as high as 1.5% to suggest a promising potential of luminescent mixed-stacked CT cocrystals in OLET applications.",
keywords = "2D, ambipolar transport, charge-transfer complexes, luminescence, organic light-emitting transistors",
author = "Park, {Sang Kyu} and Kim, {Jin Hong} and Tatsuhiko Ohto and Ryo Yamada and Jones, {Andrew O.F.} and Whang, {Dong Ryeol} and Illhun Cho and Sangyoon Oh and Hong, {Seung Hwa} and Kwon, {Ji Eon} and Kim, {Jong H.} and Yoann Olivier and Roland Fischer and Roland Resel and Johannes Gierschner and Hirokazu Tada and Park, {Soo Young}",
note = "Funding Information: The research from the Seoul National University was supported by the National Research Foundation of Korea (NRF) through a grant funded by the Korean government (MSIP; No. 2009-0081571[RIAM0417-20150013]) and the Global Frontier R&D Program on Center for Multiscale Energy System funded by the NRF under the MSIP, Korea (2012M3A6A7055540). The spectroscopic and computational work at the IMDEA was performed in the context of the European COST Action Nanospectroscopy, MP1302. Financial support at the IMDEA was provided by the Spanish Ministerio de Econom{\'i}a y Competitividad (project CTQ2014-58801), by the Comunidad de Madrid (Project Mad2D, Grant No. S2013/MIT-3007) and by the Campus of International Excellence (CEI) UAM+CSIC. The research from the Osaka University was partly supported by the Osaka–Seoul Joint Research Promotion Program, Osaka University. J.G. thanks Bego{\~n}a Mili{\'a}n-Medina (Valencia, Spain) for helpful discussions. Publisher Copyright: {\textcopyright} 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim",
year = "2017",
month = sep,
day = "27",
doi = "10.1002/adma.201701346",
language = "English",
volume = "29",
journal = "Advanced materials",
issn = "0935-9648",
publisher = "Wiley-Blackwell",
number = "36",
}