The Spectroscopy of Triplet States

Murad Tayebjee

doi:10.1117/12.2568278

20 August 2020 The Spectroscopy of Triplet States

Murad Tayebjee

Proceedings Volume 11464, Physical Chemistry of Semiconductor Materials and Interfaces XIX; 1146415 (2020) https://doi.org/10.1117/12.2568278
Event: SPIE Nanoscience + Engineering, 2020, Online Only

Abstract

Singlet exciton fission is a molecular process wherein an optically prepared singlet exciton dissociates to yield to two triplet excitons. The pair of triplets are formed on sub-picosecond timescales, leading to the assumption that the process is spin-allowed. That is, the pair of triplet excitons are in an overall singlet spin state. Recently however, we have observed a quintet triplet pair state, demonstrating that spin is not conserved. In order to completely understand this process and explain recent spectroscopic measurements, one needs to consider a time-varying spin Hamiltonian. In this presentation I will summarize recent spin-sensitive spectroscopic measurements and outline our theoretical approaches to understanding singlet fission.

Conference Presentation

Citation Download Citation

Murad Tayebjee "The Spectroscopy of Triplet States", Proc. SPIE 11464, Physical Chemistry of Semiconductor Materials and Interfaces XIX, 1146415 (20 August 2020); https://doi.org/10.1117/12.2568278

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