Fused Thiophene Semiconductors: Crystal Structure-Film Microstructure Transistor Performance Correlations
作者:Jangdae Youn、Sumit Kewalramani、Jonathan D. Emery、Yanrong Shi、Shiming Zhang、Hsiu-Chieh Chang、You-jhih Liang、Chia-Ming Yeh、Chieh-Yuan Feng、Hui Huang、Charlotte Stern、Liang-Hsiang Chen、Jia-Chong Ho、Ming-Chou Chen、Michael J. Bedzyk、Antonio Facchetti、Tobin J. Marks
DOI:10.1002/adfm.201203439
日期:2013.8.19
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
结晶域内的分子堆积基序应该是决定基于小有机分子的薄膜晶体管(TFT)中电荷传输的关键因素。尽管具有这种隐含的重要性,但有关绝大多数分子有机半导体的多晶薄膜中分子组织的详细信息尚不可用。考虑到熔融噻吩作为对环境稳定的高性能半导体的潜力,因此研究与单晶分子堆积和OTFT性能有关的薄膜微结构是很有意义的。在这里,几个新的苯并[ d,d' ] thieno [3,2- b ; 4,5- b' ]二噻吩(BTDT)的分子堆积图案)分别通过单晶衍射和掠射入射广角X射线散射(GIWAXS)在块状3D晶体和薄膜中研究了衍生物。结果表明,BTDT衍生物薄膜与其堆积晶体的分子堆积可以有显着不同。对于苯基苯并[ d,d' ] thieno [3,2- b ; 4,5- b' ]二噻吩(P-BTDT),2-联苯苯并[ d,d' ] thieno- [3,2- b ; 4, 5‐ b' ]二噻吩(Bp‐BTDT),2‐萘苯并[