Abstract OFETs with discontinuous accumulative heterojunction have been fabricated with the pair of pentacene and F16CuPc. Four structures were designed to compare the channel doping and enhancing electrode injection effects both caused by carrier accumulation at different positions in OFETs. The tunneling mechanism of enhancing electrode injection efficiency is further investigated. Moreover, the ELUMO of F16CuPc is pinned to the EF of pentacene by employing the organic-organic interface energy level alignment (OOI ELA) theory, which demonstrates the significant increase of carrier concentration theoretically at both sides of the organic pn-heterojunction surface. Due to the dual modification effects of channel doping and enhancing electrode injection, the mobility of pentacene OFET has reached at 0.2 cm2/Vs, which is 14.4 times higher than the pristine device.

中文翻译：

---

OFET 中不连续有机 pn-异质结的掺杂和注入效应的比较分析

摘要 用并五苯和 F16CuPc 对制备了具有不连续累积异质结的 OFET。设计了四种结构来比较 OFET 中不同位置的载流子积累引起的沟道掺杂和增强电极注入效应。进一步研究了提高电极注入效率的隧穿机制。此外，F16CuPc 的 ELUMO 通过采用有机-有机界面能级排列 (OOI ELA) 理论被固定到并五苯的 EF，这证明了在有机 pn-异质结表面两侧的载流子浓度理论上显着增加。由于通道掺杂和增强电极注入的双重修饰作用，并五苯 OFET 的迁移率已达到 0.2 cm2/Vs，即 14。