Polymer Brush As a Facile Dielectric Surface Treatment for High-Performance, Stable, Soluble Acene-Based Transistors
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- 作者：Kyungmin Park ; Song Hee Park ; Eunhye Kim ; Jong-Dae Kim ; Sung-Yup An ; Ho Sun Lim ; Hyun Hwi Lee ; Do Hwan Kim ; Du Yeol Ryu ; Dong Ryeol Lee ; Jeong Ho Cho
- 刊名：Chemistry of Materials
- 出版年：2010
- 出版时间：September 28, 2010
- 年：2010
- 卷：22
- 期：18
- 页码：5377-5382
- 全文大小：848K
- 年卷期：v.22,no.18(September 28, 2010)
- ISSN：1520-5002
文摘
We developed a facile dielectric surface modification using “grafting to” polymer brushes for high-performance and stable TES-ADT FETs. Polymer brushes were grafted onto oxide substrates by spin-coating and thermal annealing. TES-ADT FETs fabricated on top of the polymer brush layer showed excellent device performance−a field-effect mobility of 0.84 cm2/(V s) and an on/off current ratio of 1 × 106−that was superior to that of devices using conventional dielectric surface treatments such as HMDS and ODTS. During solvent annealing of the TES-ADT films, the mobile chains of the polymer brushes appear to profoundly influence the diffusion and crystallization of the TES-ADT molecules, while maximizing the π−π interactions along the in-plane direction. Moreover, the polymer brushes yielded excellent electrical and environmental stability because of the complete surface coverage with minimal pinholes and defects.