The synthesis of 2,6-dialkylphenyldithieno[3,2-b:2′,3′-d]thiophene derivatives and their applications in organic field-effect transistors
摘要:
2,6-Dialkylphenyldithieno[3,2-b:2',3'-dithiophene derivatives (DPCn-DTT) were synthesized and characterized. Effect of alkyl groups on optical characteristics, electrochemical properties, film-forming ability, and field-effect performance was studied. The four compounds DPCn-DTT show almost the same energy levels of the highest occupied molecular orbits and optical energy gaps, but they exhibit different charge carrier transport characteristics. The thin film transistors based on DPC1-DIT with the shortest alkyl groups (methyl groups) show the highest mobility of 0.54 cm(2) V-1 s(-1). Substrate temperature and surface modification of the SiO2 insulators have a remarkable effect on field-effect performance. High-quality microribbons of DPC8-DTT with octyl groups were prepared by a solution-phase self-assembly process. Single crystal field-effect transistors based on an individual DPC8-DTT micro-ribbon exhibit a high mobility of 1.1 cm(2) V-1 s(-1) with a current on/off ratio of 6.5 x 10(4). (C) 2013 Elsevier Ltd. All rights reserved.
ORGANIC SEMICONDUCTOR COMPOSITION AND SEMICONDUCTING LAYER OBTAINED THEREFROM
申请人:SOLVAY SA
公开号:US20190259964A1
公开(公告)日:2019-08-22
The present invention concerns a composition comprising at least one crystalline organic semiconductor and at least one compound of formula wherein R
1
R
2
, R
3
, R
4
, R
5
, R
6
, R
7
and R
8
, which may be the same or different, represent H or a C
1
-C
50
hydrocarbyl or heterohydrocarbyl group, and wherein Ar is an optionally substituted aryl or heteroaryl group.
[EN] ORGANIC SEMICONDUCTOR COMPOSITION AND SEMICONDUCTING LAYER OBTAINED THEREFROM<br/>[FR] COMPOSITION POUR SEMI-CONDUCTEUR ORGANIQUE ET COUCHE SEMI-CONDUCTRICE OBTENUE À PARTIR DE CELLE-CI
申请人:SOLVAY
公开号:WO2017216168A1
公开(公告)日:2017-12-21
The present invention concerns a composition comprising at least one crystalline organic semiconductor and at least one compound of formula wherein R1R2, R3, R4, R5, R6, R7 and R8, which may be the same or different, represent H or a C1-C50 hydrocarbyl or heterohydrocarbyl group, and wherein Ar is an optionally substituted aryl or heteroaryl group.
The synthesis of 2,6-dialkylphenyldithieno[3,2-b:2′,3′-d]thiophene derivatives and their applications in organic field-effect transistors
2,6-Dialkylphenyldithieno[3,2-b:2',3'-dithiophene derivatives (DPCn-DTT) were synthesized and characterized. Effect of alkyl groups on optical characteristics, electrochemical properties, film-forming ability, and field-effect performance was studied. The four compounds DPCn-DTT show almost the same energy levels of the highest occupied molecular orbits and optical energy gaps, but they exhibit different charge carrier transport characteristics. The thin film transistors based on DPC1-DIT with the shortest alkyl groups (methyl groups) show the highest mobility of 0.54 cm(2) V-1 s(-1). Substrate temperature and surface modification of the SiO2 insulators have a remarkable effect on field-effect performance. High-quality microribbons of DPC8-DTT with octyl groups were prepared by a solution-phase self-assembly process. Single crystal field-effect transistors based on an individual DPC8-DTT micro-ribbon exhibit a high mobility of 1.1 cm(2) V-1 s(-1) with a current on/off ratio of 6.5 x 10(4). (C) 2013 Elsevier Ltd. All rights reserved.