Light and Heat Triggering Modulation on Electronic Performance of Graphdiyne-based Thin Film Transistor.

The graphdiyne-based field-effect thin-film transistor (GTFTs) with a clean, efficient, non-destructive, continuous and reversible modulation strategy have been developed for the first time. It has been realized that efficient electronic modulation utilizing light and heat, which both results in a significant improvement of the GTFT performance. Heat can increase switching ratio of the device to 103 while the light regulation can induce a higher switching ratio above 104 by efficient charge injection with an improved conductivity of 1.5×104 S/m. Through adjusting the visible light wavelength and power density, tunable charge injection has been realized. These results not only highlight the excellent intrinsic properties and modulation method of GTFTs, but also promote the application of such two-dimensional carbon material in integrated devices, such as logic devices and flexible devices.