Study of nitrogen doped reduced graphene oxide (rgo) for its potential application as super-capacitor and photo-detector

Abstract

In this study, hydrothermal synthesis was used to produce porous nitrogen doped reduced graphene oxide (N-rGO). Prior to that, the modified Hummer's method was used to prepare graphene oxide (GO). Using an XRD instrument, the crystallinity and phase have been confirmed. FESEM and HRTEM pictures have been used for morphological examination, which supports decreased graphene oxide's flake-like structure and porous nature (rGO). The degree of nitrogen doping and reduction of other functional groups of rGO have been validated by XPS using the results of the spectrometric study. Raman spectroscopy, on the other hand, evaluates the material's vibrational frequency and confirms the reduction procedure. Comparisons of the band gaps between silicon nanowire and rGO have been made from UV- vis, which ultimately aids in determining the optimum sample to create a photodetector. It is proven by the cyclic voltametric analysis that NORG-24h has the best gravimetric capacitance and areal capacitance at 5 mV/s, measuring 1113.4 F g-1 and 309.27 mF cm-2, respectively. A coplanar interdigitate supercapacitor device with gravimetric and areal capacitance of 302.44 F g-1 and 79.84 mF cm-2, respectively, at a scan rate of 50 mV/s has been created with an eye toward industrial application. N-rGO has emerged from this research as a promising component for use as a photodetector material. Under IR conditions, it demonstrated reliable ON-OFF switching characteristics in reverse bias. Maximum stability and less noise is attained at lower reverse bias such as -0.05V and -0.25V. This material exhibits current even at 0V which is still under investigation. In summary, it can be clearly and significantly stated that nitrogen-doped reduced graphene oxide is an excellent nanomaterial that can be used in supercapacitor applications to achieve promising energy density, power density, and long cycles as well as being able to be used as an IR photodetector, which implies as IR sensors as well.