Some Electrical and Photoelectrical Properties of Conducting Polymer Graphene Composite /n-Silicon Heterojunction Diode

Authors : Elif DAŞ

Pages : 1000-1009

Doi:10.16984/saufenbilder.1129742

View : 32 | Download : 12

Publication Date : 2022-10-20

Article Type : Research Paper

Abstract :In this study, polythiophene-graphene insert ignore into journalissuearticles values(PTh-G); composite thin film was prepared on the n-type silicon insert ignore into journalissuearticles values(n-Si); semiconductor wafer by the spin coating method. Subsequently, the current-voltage insert ignore into journalissuearticles values(I-V); measurements were made on the fabricated Au/PTh-G/n-Si/Al device to ascertain the impact of the PTh-G interfacial layer on the device performance. The main device parameters such as ideality factor insert ignore into journalissuearticles values(n);, barrier height insert ignore into journalissuearticles values(b);, series resistance insert ignore into journalissuearticles values(Rs); were calculated by using the thermionic emission insert ignore into journalissuearticles values(TE); and Norde functions, and then, the obtained results were discussed in detail. Additionally, the capacitance-voltage insert ignore into journalissuearticles values(C-V); characteristic of the device was examined as a function of the frequency, and the device parameters such as diffusion potential insert ignore into journalissuearticles values(Vd);, Fermi energy level insert ignore into journalissuearticles values(Ef);, carrier concentration insert ignore into journalissuearticles values(Nd);, b were detemined. Finally, the light intensity-dependent I-V measurements were taken to obtain information about the photoelectrical characteristics of the fabricated device. The obtained results have shown that the prepared composite material has a good potential to be used in optoelectronic applications such as photodiode, and photodetector.
Keywords : Graphene, Polythiophene, Composite Material, Photoresponse, Photosensitivity