Professor Roqan's research centers on advancing technology on ultrafast spectroscopy as well as nanostructure semiconductor-based device fabrication (e.g. quantum dots, nanotubes and nanowires, etc.), with aims to develop large-scale optoelectronic applications, mainly nitrides, oxide and perovskite semiconductors. Potential applications for optical spectroscopy include: carrier dynamics and studying the effect of defect bands to identify their source such as time-resolved spectroscopy (TRS), and advanced photoluminescence measurements aiming to develop novel smart light emitting and photodetector devices. Roqan develops different techniques for cost-effective, high-performance device fabrications.​