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| 題名: | Fused thiophene semiconductors: Crystal structure-film microstructure transistor performance correlations |
| 作者: | 陳銘洲;Youn, Jangdae;Kewalramani, Sumit;Emery, Jonathan D.;Shi, Yanrong;Zhang, Shiming;Chang, Hsiu-Chieh;Liang, You-jhih;Yeh, Chia-Ming;Feng, Chieh-Yuan;Huang, Hui;Stern, Charlotte;Chen, Liang-Hsiang;Ho, Jia-Chong;Chen, Ming-Chou;Bedzyk, Michael J.;Facchetti, Antonio;Marks, Tobin J. |
| 貢獻者: | 理學院化學學系 |
| 關鍵詞: | benzothienodithiophene (BTDT);Biomaterials;Condensed Matter Physics;crystal structure;Crystals;Derivatives;Electrochemistry;Electronic, Optical and Magnetic Materials;grazing-incidence wide-angle X-ray scattering (GIWAXS);Lattices;organic thin-film transistors (OTFT);Semiconductor devices;Semiconductors;Single crystals;Thin films;Transistors |
| 日期: | 2013-08-19 |
| 上傳時間: | 2026-04-21 14:10:35 (UTC+8) |
| 出版者: | Wiley-VCH Verlag;Weinheim: WILEY-VCH Verlag |
| 摘要: | 摘要： AbstractThe molecular packing motifs within crystalline domains should be a key determinant of charge transport in thin‐film transistors (TFTs) based on small organic molecules. Despite this implied importance, detailed information about molecular organization in polycrystalline thin films is not available for the vast majority of molecular organic semiconductors. Considering the potential of fused thiophenes as environmentally stable, high‐performance semiconductors, it is therefore of interest to investigate their thin film microstructures in relation to the single crystal molecular packing and OTFT performance. Here, the molecular packing motifs of several new benzo[d,d′]thieno[3,2‐b;4,5‐b′]dithiophene (BTDT) derivatives are studied both in bulk 3D crystals and as thin films by single crystal diffraction and grazing incidence wide angle X‐ray scattering (GIWAXS), respectively. The results show that the BTDT derivative thin films can have significantly different molecular packing from their bulk crystals. For phenylbenzo[d,d′]thieno[3,2‐b;4,5‐b′]dithiophene (P‐BTDT), 2‐biphenylbenzo[d,d′]thieno‐[3,2‐b;4,5‐b′]dithiophene (Bp‐BTDT), 2‐naphthalenylbenzo[d,d′]thieno[3,2‐b;4,5‐b′]dithiophene (Np‐BTDT), and bisbenzo[d,d′]thieno[3,2‐b;4,5‐b′]dithiophene (BBTDT), two lattices co‐exist, and are significantly strained versus their single crystal forms. For P‐BTDT, the dominance of the more strained lattice relative to the bulk‐like lattice likely explains the high carrier mobility. In contrast, poor crystallinity and surface coverage at the dielectric/substrate interface explains the marginal OTFT performance of seemingly similar PF‐BTDT films.
其他題名： Adv. Funct. Mater
出版者： Weinheim: WILEY-VCH Verlag
出版日期： 2013-08-19
出處： Advanced Functional Materials, 2013-08, Vol.23 (31), p.3850-3865
資源來源： Wiley Online Library Journals
版權： Copyright © 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim
識別號： ISSN: 1616-301X
識別號： EISSN: 1616-3028
識別號： DOI: 10.1002/adfm.201203439 |
| 顯示於類別: | [化學學系] 期刊論文
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