<h3>Title</h3>
<p><strong><span style="color: #0000ff;">Ultrafast Photophysical Dynamics of Energy Harvesting Nanomaterials and Bio-relevant Molecules</span></strong></p>
<p><strong><span style="text-decoration: underline;">Abstract</span> :</strong></p>
<p>It has been more than 30 years that the field of nanocrystal (NC) has emerged, driven by the attractive physics due to its strong confinement, along with several prospective applications. To fully realize the potential of the NCs, it is of utmost importance to study the fundamental of the exciton relaxation-recombination dynamics which often falls in the femto (10<sup>-15</sup> s) - to nanosecond (10<sup>-9</sup> s) timescale. Ultrafast optical spectroscopic techniques offer a detailed understanding of exciton relaxation and recombination dynamics.</p>
<p><br />In this talk, I will focus on the ultrafast excitonic properties of the recently emerged undoped and doped perovskite NCs. Then I will talk about the ultrafast charge transfer dynamics of undoped and doped II-VI quantum dot (QD) materials on the relevance of solar energy harvesting. Finally, I will briefly introduce the elementary processes that accompany the interaction of ionizing radiation with biologically relevant molecules in an aqueous solution. Using femtosecond coherence spectroscopy, I will elucidate the vibrational wave packet dynamics that follow the photodetachment of amino acids in an aqueous solution.</p>