单层
材料科学
有机半导体
有机电子学
电子迁移率
纳米技术
场效应晶体管
化学气相沉积
半导体
Crystal(编程语言)
晶体管
光电子学
物理
电压
量子力学
程序设计语言
计算机科学
作者
Zhiwen Zhou,Qisheng Wu,Sijia Wang,Yu-Ting Huang,Huaming Guo,Shien‐Ping Feng,Paddy K. L. Chan
标识
DOI:10.1002/advs.201900775
摘要
Abstract Solution‐processed 2D organic semiconductors (OSCs) have drawn considerable attention because of their novel applications from flexible optoelectronics to biosensors. However, obtaining well‐oriented sheets of 2D organic materials with low defect density still poses a challenge. Here, a highly crystallized 2,9‐didecyldinaphtho[2,3‐b:2′,3′‐f]thieno[3,2‐b]thiophene (C 10 ‐DNTT) monolayer crystal with large‐area uniformity is obtained by an ultraslow shearing (USS) method and its growth pattern shows a kinetic Wulff's construction supported by theoretical calculations of surface energies. The resulting seamless and highly crystalline monolayers are then used as templates for thermally depositing another C 10 ‐DNTT ultrathin top‐up film. The organic thin films deposited by this hybrid approach show an interesting coherence structure with a copied molecular orientation of the templating crystal. The organic field‐effect transistors developed by these hybrid C 10 ‐DNTT films exhibit improved carrier mobility of 14.7 cm 2 V −1 s −1 as compared with 7.3 cm 2 V −1 s −1 achieved by pure thermal evaporation (100% improvement) and 2.8 cm 2 V −1 s −1 achieved by solution sheared monolayer C 10 ‐DNTT. This work establishes a simple yet effective approach for fabricating high‐performance and low‐cost electronics on a large scale.
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