2018
DOI: 10.1002/admi.201800920
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Interface Structure and Evolution of Dinaphthothienothiophene (DNTT) Films on Noble Metal Substrates

Abstract: The latter characteristic is particularly important since charge carrier mobility and transport properties of crystalline π-conjugated molecular materials are typically strongly anisotropic, [5] which underlines the importance of a precise structural control of OSC films at the contact interfaces.Among the newly synthesized OSCs, dinaphthothienothiophene (DNTT) has received particular attention because it combines a remarkably high charge carrier mobility [6,7] with distinct chemical robustness, [8,9] hence ma… Show more

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Cited by 14 publications
(14 citation statements)
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“…From the AFM image shown in Figure 3c, the surface of the DNTT crystal island is rather rough. These results are consistent with the recent work of Dreher et al 16…”
Section: Results and Discussionsupporting
confidence: 94%
“…From the AFM image shown in Figure 3c, the surface of the DNTT crystal island is rather rough. These results are consistent with the recent work of Dreher et al 16…”
Section: Results and Discussionsupporting
confidence: 94%
“…Most interestingly, however, this effect saturates at a covering level of 80% for temperatures above 350 K, which is in close agreement with our AFM covering analysis, indicating that dewetting and island formation does not further proceed with growth temperature. This behavior differs significantly from the growth of most planar π-conjugated molecules, such as PEN, perfluoropentacene (PFP), perylene, or dinaphthothienothiophene (DNTT), , where a distinct dewetting and island formation hampers the fabrication of smooth molecular films covering the metal surface.…”
Section: Resultsmentioning
confidence: 94%
“…Based on the energy band theory, the orientation of OSC molecules on the substrate has been confirmed to affect the interface dipoles and overlapping of molecular orbitals, which will actually affect their energy levels, such as the highest occupied molecular orbital (HOMO) and the work function (WF). Therefore, the gradually changed orientation of the DNTT molecules along and across the contact edge will cause a gradual shift of work function and the HOMO levels. In other words, the synergistically guided hybrid crystal on the transition region induces continuously distributed states inside the gap, which can not only lower the contact injection barrier but also be favorable for the carriers traveling to the channel after injected .…”
Section: Resultsmentioning
confidence: 99%