Abstract We developed a facile spray-printing method to fabricate oxidized single-walled carbon nanotube (Oxy-SWCNT) source-drain electrodes for use in organic field-effect transistors (OFETs). Surface oxidized SWCNT bundles enables the solution processability of Oxy-SWCNT without dispersant. The spray printing of an Oxy-SWCNT solution via a shadow mask led to electrode patterns with excellent transparency and electrical conductivity. Pattern resolution was optimized by adjusting printing volume and substrate temperature. The performance of the pentacene FETs with Oxy-SWCNT electrodes was compared with that of conventional Au electrodes. The FETs with Oxy-SWCNT electrodes exhibited higher charge carrier mobilities, on/off current ratios, and optical transmittances than those of FETs with Au electrodes. The increased device performance of the FETs with Oxy-SWCNT electrodes is due to the low contact resistance resulting from the efficient charge injection and transport across the electrode-channel interface. High work function (−5.1 eV) of the Oxy-SWCNT facilitated the charge injection. Our study demonstrates that Oxy-SWCNTs exhibit exceptional potential as a printable electrode material for OFETs and promise a better replacement for electrodes in transparent and flexible electronics.

中文翻译：

---

基于氧化单壁碳纳米管电极的有机晶体管通过简单喷涂形成图案

摘要 我们开发了一种简便的喷印方法来制造用于有机场效应晶体管 (OFET) 的氧化单壁碳纳米管 (Oxy-SWCNT) 源漏电极。表面氧化的单壁碳纳米管束使氧-单壁碳纳米管在没有分散剂的情况下具有溶液可加工性。通过荫罩喷涂 Oxy-SWCNT 溶液可形成具有优异透明度和导电性的电极图案。通过调整印刷量和基材温度来优化图案分辨率。将具有 Oxy-SWCNT 电极的并五苯 FET 的性能与传统 Au 电极的性能进行了比较。与具有 Au 电极的 FET 相比，具有 Oxy-SWCNT 电极的 FET 表现出更高的电荷载流子迁移率、开/关电流比和光学透射率。具有 Oxy-SWCNT 电极的 FET 提高的器件性能是由于有效电荷注入和跨电极 - 通道界面传输导致的低接触电阻。Oxy-SWCNT 的高功函数 (-5.1 eV) 促进了电荷注入。我们的研究表明，Oxy-SWCNT 作为 OFET 的可印刷电极材料表现出非凡的潜力，并有望更好地替代透明和柔性电子产品中的电极。