Method for avoiding minority carrier injection of field effect transistor and field effect transistor

Abstract

The invention provides a method for avoiding minority carrier injection of a field effect transistor based on p-type narrow band gap organic small molecules and the field effect transistor. The methodcomprises the following step: loading p-type wide-band gap organic semiconductors between a source electrode and a p-type narrow-band gap organic small molecular layer and between a drain electrode and the p-type narrow-band gap organic small molecular layer. According to the embodiment of the invention, p-type wide-band gap organic semiconductors are loaded between the source electrode and the p-type narrow-band gap organic small molecular layer and between the drain electrode and the p-type narrow-band gap organic small molecular layer, so that injection of minority carriers (electrons) isavoided from the source.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to a method for avoiding minority carrier injection of field effect transistors based on p-type narrow-bandgap organic small molecules and the field-effect transistor based on p-type narrow-bandgap organic small molecules. Background technique [0002] Organic field-effect transistors based on organic semiconductors as the active layer are considered to be the core components of next-generation flexible electronic devices due to their excellent solution preparation, flexibility and wearable characteristics. With advances in molecular design, material growth, and device fabrication, the performance of organic field-effect transistors has been greatly improved. Among them, the mobility of the p-type organic semiconductor, the most important parameter used to evaluate the performance index of organic field effect transistors, has reached and exceeded the standard of amorphous si...

AI Technical Summary

Problems solved by technology

However, this method is often only applicable to polymer semiconductor systems, that is, the volume of impurity molecules is much smaller than that of polymer molecules, so it has little effect on carrier transport, and it is difficult to apply to organic small molecule semiconductor systems, because impurity molecules Comparable to the volume of small molecule semiconductors, it will inevitably affect the orderly arrangement of small molecules and form new carrier confinement centers

Images