Photophysical investigation of organic chromophores for optoelectronic applications

Abstract

Organic chromophores have gained significant popularity in the scientific community due to their immense potential as alternative materials for organic optoelectronic devices. These devices include organic field effect transistors (OFETs), organic light-emitting diodes (OLEDs), organic photovoltaics (OPVs), sensors, and biohybrid electronics. With their unique optical and electronic properties, organic chromophores fall in the category of organic semiconductors. These organic semiconductor-based devices offer remarkable advantages such as flexibility, transparency, robustness, and low power consumption, distinguishing them from conventional inorganic electronics. To fully explore the potential of newly synthesized organic chromophores, it is crucial to comprehensively characterize their photophysical properties. The photophysics of chromophores plays a pivotal role in determining their suitability for various optoelectronic applications. In this thesis, the focus is on studying the energy and electron transfer mechanisms in covalently linked organic chromophores, which comprise electron donor (molecules or entity capable of transferring energy or electrons) and acceptor (molecules or entity capable of accepting energy or electrons) dyads, triads, and supramolecular structures. The objective is to explore their potential applications in optoelectronic devices, especially OLEDs, OPVs and biohybrid devices.