PhD Student: Condensed Matter Physics
Former Avenir Foundation Fellow
Center for Quantum Research and Technology (CQRT)
The University of Oklahoma
Norman, OK, USA
Welcome to my personal website! I am a condensed matter physicist with a focus on experimental research in materials characterization, spectroscopy, solid-state physics, nanoscience, and quantum systems. I have a background in data analysis, machine learning, and creating mathematical models to understand real-world data.
My current research focuses on the development of next-generation photovoltaic cells through the investigation of novel materials and structures. Using optical spectroscopy, I study the fundamental properties of these materials and systems in order to understand their potential for high-efficiency photovoltaics. I also collaborate with organizations such as the National Renewable Energy Laboratory, Swift Solar, the Naval Research Laboratories, and NASA to investigate the carrier dynamics and stability of perovskite materials for use in solar cells and space applications.
I have published my research in various academic journals, and I am dedicated to furthering our understanding of these complex materials and systems.
In my research, I have developed a range of skills in data analysis, problem-solving, and programming. I have created GUI for windows OS to facilitate communication between lab equipment and computers and ease data acquisition using LabView. I am proficient in using Mathematica and Python for data analysis and visualization, and have also written neural network machine learning programs in Python using TensorFlow. Thank you for visiting my website, and please don't hesitate to reach out if you have any questions or would like to collaborate
Peer reviewed publications:
S. Sourabh, V. R. Whiteside, I. R. Sellers, M.C Beard, Hot carrier redistribution, electron‐phonon interaction, and their role in carrier relaxation in thin-film metal‐halide perovskites. Physical Review M 5, 095402, 2021.
S. Sourabh, H. Afshari, V.R. Whiteside, G.E Eperon, R.A Schiedt, M.C. Beard, J.M. Luther, I.R sellers, Evidence of hot carrier extraction in metal halide perovskite solar cells, (Submitted to Physical Review X (PRX), 2022).
S.Sourabh, V. Mopara, T. Creslyr, M. Furis, B. Saparov, I.R Sellers, Evidence and origin of extremely long-lived states in EPEA- ligand perovskites. (manuscript under preparation)
Ian R. Sellers; Hadi Afshari; Sergio A. Chacon; Shashi Sourabh; Todd A. Byers; Vincent R. Whiteside; Rose Crawford; Bibhudutta Rout; Ahmad R. Kirmani; Joseph M. Luther; Giles E. Eperon, Triple Halide Perovskite Solar Cells with Thermal Stability over 200 °C with Radiation Tolerance and Self-Healing, (Submitted to Joule, 2022)
H. Esmaielpour, V.R. Whiteside, S. Sourabh, G.E. Eperon, J.T. Pretch, M.C. Beard, H. lu, B.K. Durant, I.R. Sellers, Role of Exciton Binding Energy on LO Phonon Broadening and Polaron Formation in (BA)2PbI4 Ruddlesden–Popper Films, Journal of Physical Chemistry C., 124, 9496 (2020).
B.K. Durant, H. Afshari, S. Sourabh, I.R. Sellers, Radiation stability of mixed tin‐lead halide perovskites: Implications for space applications. Solar Energy Materials Solar Cells, 230, 111232 (2021).
2022: The Avenir Foundation Graduate Student Fellowships
2022: Robberson Travel Grant
2015: Indian Academy of Science (IAS) fellowship.
2014‐2017: MHRD I-Ph.D. fellowship
2017‐ Present: Ph.D. student, Dept. of Physics and Astronomy, The University of Oklahoma, Norman, USA.
2014-2017: MS, Indian Institute of Science Education and Research, Bhopal, India.
2010-2013: B.Sc (Hons) Dept. of Physics., Kirorimal College, University of Delhi, Delhi, India
Conference Talk :
SPIE Photonics West 2022 - Hot carrier redistribution, electron-phonon interaction, and their role in carrier relaxation in thin-film halide perovskites
APS March meeting 2021 - Carrier dynamics and carrier interaction in BAPbI 2D Ruddlesden popper thin film perovskite.
OKPVRI 2022 - Evidence of Hot Carriers in a Metal Halide Perovskite Solar Cell
CQRT Symposium 2022 - Evidence of Hot Carriers in a Metal Halide Perovskite Solar Cell
Homer L. Dodge - Dept. of Physics and Astronomy(OU) poster presentation 2022 - Evidence of Hot Carriers in a Metal Halide Perovskite Solar Cell