Photoexcitations in molecular semiconductors
Lead Research Organisation:
University of Cambridge
Department Name: Physics
Abstract
Peter Budden will study the time evolution of photoexcited electronic states in molecular semiconductors, using transient optical spectroscopy with sub-picosecond time resolution. In particular, Peter will study the process of the splitting of the initial spin singlet excited state into a pair of spin triplet excitons in model materials and nanostructures for which the triplet exciton lies close to one half of the singlet exciton energy.
Organisations
People |
ORCID iD |
Richard Friend (Primary Supervisor) | |
Peter Budden (Student) |
Publications
Fallon K
(2019)
Exploiting Excited-State Aromaticity To Design Highly Stable Singlet Fission Materials
in Journal of the American Chemical Society
Budden PJ
(2021)
Singlet exciton fission in a modified acene with improved stability and high photoluminescence yield.
in Nature communications
Allardice JR
(2019)
Engineering Molecular Ligand Shells on Quantum Dots for Quantitative Harvesting of Triplet Excitons Generated by Singlet Fission.
in Journal of the American Chemical Society
Studentship Projects
Project Reference | Relationship | Related To | Start | End | Student Name |
---|---|---|---|---|---|
EP/N509620/1 | 01/10/2016 | 30/09/2022 | |||
1803591 | Studentship | EP/N509620/1 | 01/10/2016 | 30/09/2020 | Peter Budden |
Description | A new class of singlet fission materials, based on a dye called cibalackrot, was experimentally verified for the first time. Singlet fission is a process that can increase the efficiency of solar energy harvesting. This new class of molecules helped elucidate how excited-state aromaticity can be used predict if singlet fission will be viable in a given molecule, aiding the design of future singlet fission candidates. |
Exploitation Route | The use of aromaticity to design singlet fission materials can be taken forward to design more efficient, more chemically stable, and higher band-gap singlet fission materials. There is a need materials of this nature to move towards integrating singlet fission with silicon photovoltaics. |
Sectors | Energy |