Preparation and Characterization of the Organic Thin Film Transistors by Adopting the ZnPc0.5-PbPc0.5 Co-Deposited Material as the Active Layer

Abstract

The organic film co-deposited by Zinc Phthalocyanine (ZnPc) and Lead Phthalocyanine (PbPc) was used as the active layer of the vertical organic film diode, and we obtained the co-deposition ratio of the devices with the better performance of 1:1. We made the vertical organic thin film transistor (VOTFT) with the same process again, compared the co-deposited VOTFT with the VOTFT with a single organic material (ZnPc, PbPc) as the active layer and tested the static operating characteristics of the device. The results show that the carrier mobility of ZnPc-PbPc-VOTFT is more than three times higher than that of ZnPc-VOTF and PbPc-VOTFT. When [Formula: see text][Formula: see text]V and [Formula: see text][Formula: see text]V, the output current [Formula: see text] of ZnPc-PbPc-VOTFT is up to 0.2[Formula: see text]mA, which is 12 times that of ZnPc-VOTFT and 27 times that of PbPc-VOTFT. Overall, the electrical performance of ZnPc-PbPc-VOTFT is better than ZnPc-VOTFT and PbPc-VOTFT.