The Study Of Organic Field Effect Transistor Based Copper Phthalocyanine

Organic thin-film transistor(Organic thin film transistor, OTFT) has great potential for development in logic circuits, OLED flat panel display technology, organic solar cells and new sensors, by advantages of structure, cost and processing technology. It has gradually become a hot research in recent years.In the organic thin film device, the crystalline quality of the organic semiconductor layer and the injection effect of source and drain electrodes have a great influence on device performance. This paper studies the effects of crystal quality and injection effect of source and drain electrodes on organic semiconductor device performance by optimizing the Copper Phthalocyanine based OTFT device performance.Details are as follows:At the first, this article briefly describes the issues related to the application fields of OTFT device, the background and issues existed in the current research and development. Then elaborates the basic structure of the OTFT device, how the device work and present materials and equipment needed for the preparation of organic thin film transistor devices.Secondly, we describe the process for preparing an organic thin film field effect transistor device and design a test platform for organic thin film devices based on the OTFT device we made and Keithley 2400 and detection circuit element.Thirdly, we use high-temperature vacuum annealing and solution processing methods to to improve crystallinity of the organic semiconductor layer. This paper explores the optimal annealing temperature and solution processes by comparative analysis of the organic layer with OTFT device performance characterization.Finally, This paper improve the injection effect and the contact resistance between the electrodes and the organic layer by inserting an electrode buffer layer material. Analysis of the reasons for improving charge injection through theoretical analysis.