Sai Santosh Kumar Raavi

Dr. Sai Santosh Kumar Raavi (FRSC, FTAS, M-NASI) is a Professor at the Department of Physics, Indian Institute of Technology Hyderabad, with affiliations in the Department of Climate Change. He leads the Ultrafast Photophysics and Photonics Laboratory, focusing on transient absorption/luminescence spectroscopy of solar energy materials and optoelectronic devices.

• Research Interests: Ultrafast carrier dynamics, nonlinear optics, perovskite solar cells, organic photovoltaics, and scintillator technologies.

Research Trends from his 15 most recent publications show expertise in:

• Halide perovskite optimization for photovoltaics and photodetectors
• Advanced optical characterization techniques (fs-TAS, Z-scan)
• Doping/engineering strategies for improved material performance
• Photocatalytic applications and defect-mediated charge dynamics
• Molecular design for nonlinear optical properties
• Energy conversion in hybrid and 2D materials

Scientific Honors:

• Fellow of Royal Society of Chemistry (FRSC)
• Faculty Research Excellence Award (2024)
• JSPS Invitational Fellowship (2025)
• Bhaskara Advanced Solar Energy (BASE) Fellowship (2019)
• Young Scientist Award (2008)

Grants & Projects: Has secured >10 major research grants totaling ~Rs. 2.5 crore from agencies like DAE-BRNS, DST, BRICS-STI, and SPARC, focusing on lead-free perovskites, organic solar cells, and ultrafast spectroscopy facilities.

Labs & Teams: Leads the Ultrafast Photophysics and Photonics Laboratory, collaborating internationally with institutions in Japan, USA, and Brazil. His group specializes in integrating ultrafast spectroscopy with device innovation for next-generation optoelectronics.