5 papers
Persistent singlet electronic character in the multiexcitonic triplet-pair state of strongly coupled pentacene singlet fission dimers
Atandrita Bhattacharyya, Namana Venkatareddy, Sanjoy Patra +5
Singlet fission converts an optically excited singlet state into a spin-entangled triplet pair state (TT) that can, in principle, yield two free triplets for photovoltaics…
State Localization and Selective Charge Filtering Near a Null Point
Sanjoy Patra, Jibin Sivanarayan, Vivek N. Bhat +5
Null points in synthetically tunable molecular aggregates are predicted to generate flat energy bands analogous to those known in strongly correlated condensed-matter physics. For…
Intramolecular Singlet Fission Through a Coherently Coupled Excimer-like Intermediate
Sanjoy Patra, Atandrita Bhattacharyya, Ch. Mudasar Hussain +5
Singlet Fission (SF) into two triplets offers exciting avenues for high-efficiency photovoltaics and optically initializable qubits. While the chemical space of SF chromophores is…
Low and High Frequency Vibrations Synergistically Enhance Singlet Exciton Fission Through Robust Vibronic Resonances
Atandrita Bhattacharyya, Amitav Sahu, Sanjoy Patra +1
Singlet exciton fission (SEF) is initiated by ultrafast internal conversion of a singlet exciton into a correlated triplet pair (TT)1. The `reaction coordinates' for ultrafast SEF…
Rapid Scan White Light Pump-Probe Spectroscopy with 100 kHz Shot-to-Shot Detection
Vivek N. Bhat, Asha S. Thomas, Vivek Tiwari
We demonstrate a femtosecond pump-probe spectrometer which utilizes a white light supercontinuum as input, and relies on mutual synchronization of acousto-optical chopper, pump-pro…