Organic sensitization of graphene oxide and reduced graphene oxide thin films for photovoltaic applications

Abstract

In this work, a new organic compound (K-Azo) was introduced to enhance the electrical and optical performance of graphene oxide (GO) and reduced GO (rGO) nanostructured films. The improved and modified chemical vapour method was employed for the synthesis of GO and rGO. The photophysical characterization of thin films was performed by applying analytical techniques including X-ray diffraction, Fourier-transform infrared spectroscopy, scanning electron microscopy, ultraviolet-visible, and Raman spectroscopy. The electrical properties (I-V characteristic) of GO and rGO thin films displayed higher conductivity which was 4.07 × 10 −7 and 1.10 × 10 −3 S/cm, respectively in the presence of organic sensitizer. However, GO and rGO thin films showed 9.91 × 10 −7 and 6.17 × 10 −4 S/cm, respectively in the absence of K-Azo sensitizer.Optical and electrical investigations indicated that the characteristics of GO and rGO were improved due to the presence of organic sensitizer. The longrange π-electron delocalization in organic sensitizer contributed to higher conductivity for potential photovoltaic solar cell applications.

High-Sensitivity Biosensor Based on Glass Resonance PhC Cavities for Detection of Blood Component and Glucose Concentration in Human Urine

“…Furthermore, hemoglobin takes oxygen from the lung and carries carbon dioxide to the lung, which may be utilized to diagnose thalassemia with a fractured index of 1.38. Consequently, plasma, or blood fluid, is applied for transporting different materials via the blood that may be employed to diagnose cardiovascular disease (CVD) [52]. Its RI value equals 1.35.…”

“…the blood that may be employed to diagnose cardiovascular disease (CVD) [52]. Its RI value equals 1.35.…”

A Comparative Investigation of Chemically Reduced Graphene Oxide Thin Films Deposited via Spray Pyrolysis

“… 16 They also have high conductivity and a structure that can be made porous to build efficient supercapacitors 17 or enhance the performances of solar cells. 5 , 18 These graphene-like materials have also found applications in optics due to their nonlinear properties 19 , 20 and in medicine as a drug release matrix for targeting cancer cells. 21 However, the efficient use of GO and rGO in these applications can be limited by their arbitrary amount of lattice disorder, which is due to several key factors, including the fabrication technique.…”

Photophysical Properties of the PVK-MEH-PPV/PCBM Composite for Organic Solar Cells Application: Synthesis, Characterization and Computational Study

“…Their challenge is to at least obtain a stable organic material that is also flexible and can be implemented [5][6][7] as an active layer in optoelectronic devices, especially organic solar cells. Actually, it has been reported that the architectures of the most efficient photovoltaic cells use alternating donor-acceptor groups [8][9][10][11][12][13], mainly for their good thermal stability. In this context, poly[2-methoxy-5-(2-ethylhexyloxy)-1,4-phenylenevinylene] (MEH-PPV) is a semiconducting polymer of interest [14][15][16], one that has been widely studied for the development of a P-N junction with [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) [17][18][19].…”