Semiconducting Polymers with Nanocrystallites Interconnected via Boron-Doped Carbon Nanotubes

详细信息    查看全文

• 作者：Kilho Yu ; Ju Min Lee ; Junghwan Kim ; Geunjin Kim ; Hongkyu Kang ; Byoungwook Park ; Yung Ho Kahng ; Sooncheol Kwon ; Sangchul Lee ; Byoung Hun Lee ; Jehan Kim ; Hyung Il Park ; Sang Ouk Kim ; Kwanghee Lee
• 刊名：Nano Letters
• 出版年：2014
• 出版时间：December 10, 2014
• 年：2014
• 卷：14
• 期：12
• 页码：7100-7106
• 全文大小：500K
• ISSN：1530-6992

文摘

Organic semiconductors are key building blocks for future electronic devices that require unprecedented properties of low-weight, flexibility, and portability. However, the low charge-carrier mobility and undesirable processing conditions limit their compatibility with low-cost, flexible, and printable electronics. Here, we present significantly enhanced field-effect mobility (渭_FET) in semiconducting polymers mixed with boron-doped carbon nanotubes (B-CNTs). In contrast to undoped CNTs, which tend to form undesired aggregates, the B-CNTs exhibit an excellent dispersion in conjugated polymer matrices and improve the charge transport between polymer chains. Consequently, the B-CNT-mixed semiconducting polymers enable the fabrication of high-performance FETs on plastic substrates via a solution process; the 渭_FET of the resulting FETs reaches 7.2 cm² V^鈥? s^鈥?, which is the highest value reported for a flexible FET based on a semiconducting polymer. Our approach is applicable to various semiconducting polymers without any additional undesirable processing treatments, indicating its versatility, universality, and potential for high-performance printable electronics.

Keywords:

Semiconducting polymer; carbon nanotube; polymer nanocrystallite; nanocomposite; field-effect transistor; room-temperature process