Research Projects

Nonlinear optics (NLO) has significantly advanced since the invention of lasers, with new materials, novel phenomena, and technical applications. Optical limiting materials, passive Q switches, infrared detectors, and related laboratory applications have all been made possible by satisfactory NLO properties of layered materials, particularly their nonlinear absorption (NLA) characteristics. Eye-safe high-energy lasers have been developed for various fields that require increased power output and protection from human exposure. Optical power limiting (OPL) materials can help avoid unnecessary eye dangers. Photodetectors (PD) are significant optoelectronic devices that detect light or electromagnetic radiations and convert them to electric signals through the photoelectric effect. They can operate at UV (10-300 nm), visible (400-700 nm), IR (700 nm-1mm), and THz ranges, with various applications in daily life. Conventional semiconductors with suitable bandgap have been used as photo-sensitive materials to construct PD. The simplicity of si synthesis and compatibility with si-based circuit technologies are widely used to detect visible and near infrared light. Graphene-perovskite/si hybrid materials have exceptional optoelectronic performance when combined with advantageous characteristics. Researchers suggest that the integration of graphene decorated perovskites quantum dots might be a fascinating process to overcome issues. The MAPbX3/graphene hybrid PD has achieved enhanced performance with high responsivity, making it a contemporary leader in PD. The objective of this proposal is to enhance the photodetection property of graphene-perovskite/si and new generation nanodevices with high performance, making them attractive for OPL applications in the visible and IR regime for the protection of optoelectronic devices and the human body from intense radiations.