Born: Oct 1974, New Delhi
Ph.D. (Prof. D. D. Sarma), IISc Bangalore, 2004
Post Doctoral Fellow: LMU Munich, Prof. Andrey Rogach, May 05 - Apr 06
Post Doctoral Fellow: TU Dresden, Prof. Dr. Alexander Eychmueller, May 06 - Jan 08 Assistant Professor: Indian Institute of Technology Bombay, Jan 08-Jun 08 Assistant Professor: Indian Institute of Technology Delhi, Jul 08-Dec 12 Associate Professor: Indian Institute of Technology Delhi, Dec 12-Aug 18 Professor: Indian Institute of Technology Delhi, Aug 18-present
Our research focuses on the synthesis and applications of nanocrystals: in particular semiconductor nanocrystals or quantum dots. The interest in nanocrystals stems from the fact that these tiny fragments of matter exhibit properties dependent on the size of the crystals. Semiconductors offer the possibility of obtaining fluorescence owing to excitation decay across the band gap. The band gap of a semiconductor, and therefore the energy of emission, can be tuned by changing the size of the nanocrystals in accordance with the quantum confinement effects. Our group concentrates mainly on the group II-VI chalcogenides, namely that of cadmium and zinc for the visible region of the electromagnetic spectrum, group IV-VI semiconductors such as PbS and PbSe for the infra-red region. Also, we are actively engaged in designing new materials with the possibility of charge separation across interfaces. These materials are highly desirable for applications such as photocatalysis, photovoltaics and photoconductivity.