Recent advances in triplet–triplet annihilation upconversion and singlet fission, towards solar energy applications

AJ Carrod, V Gray, K Börjesson - Energy & Environmental Science, 2022 - pubs.rsc.org
Solar energy is an ample renewable energy resource, with photovoltaic (PV) technology
enabling a direct route from light to electricity. Currently, PVs are limited in photon …

Expanded theory of H-and J-molecular aggregates: the effects of vibronic coupling and intermolecular charge transfer

NJ Hestand, FC Spano - Chemical reviews, 2018 - ACS Publications
The electronic excited states of molecular aggregates and their photophysical signatures
have long fascinated spectroscopists and theoreticians alike since the advent of Frenkel …

Theoretical modeling of singlet fission

D Casanova - Chemical reviews, 2018 - ACS Publications
Singlet fission is a photophysical reaction in which a singlet excited electronic state splits
into two spin-triplet states. Singlet fission was discovered more than 50 years ago, but the …

Harnessing singlet exciton fission to break the Shockley–Queisser limit

A Rao, RH Friend - Nature reviews materials, 2017 - nature.com
Singlet exciton fission is a carrier multiplication process in organic semiconductors that
generates two electron–hole pairs for each photon absorbed. Singlet fission occurs on sub …

External quantum efficiency above 100% in a singlet-exciton-fission–based organic photovoltaic cell

DN Congreve, J Lee, NJ Thompson, E Hontz, SR Yost… - Science, 2013 - science.org
Singlet exciton fission transforms a molecular singlet excited state into two triplet states,
each with half the energy of the original singlet. In solar cells, it could potentially double the …

Unconventional singlet fission materials

T Ullrich, D Munz, DM Guldi - Chemical Society Reviews, 2021 - pubs.rsc.org
Singlet fission (SF) is a photophysical downconversion pathway, in which a singlet excitation
transforms into two triplet excited states. As such, it constitutes an exciton multiplication …

Singlet fission in pentacene dimers

J Zirzlmeier, D Lehnherr, PB Coto, ET Chernick… - Proceedings of the …, 2015 - pnas.org
Singlet fission (SF) has the potential to supersede the traditional solar energy conversion
scheme by means of boosting the photon-to-current conversion efficiencies beyond the 30 …

Singlet exciton fission in solution

BJ Walker, AJ Musser, D Beljonne, RH Friend - Nature chemistry, 2013 - nature.com
Singlet exciton fission, the spin-conserving process that produces two triplet excited states
from one photoexcited singlet state, is a means to circumvent the Shockley–Queisser limit in …

Singlet exciton fission in polycrystalline thin films of a slip-stacked perylenediimide

SW Eaton, LE Shoer, SD Karlen, SM Dyar… - Journal of the …, 2013 - ACS Publications
The crystal structure of N, N-bis (n-octyl)-2, 5, 8, 11-tetraphenylperylene-3, 4: 9, 10-bis
(dicarboximide), 1, obtained by X-ray diffraction reveals that 1 has a nearly planar perylene …

Singlet exciton fission photovoltaics

J Lee, P Jadhav, PD Reusswig, SR Yost… - Accounts of chemical …, 2013 - ACS Publications
Singlet exciton fission, a process that generates two excitons from a single photon, is
perhaps the most efficient of the various multiexciton-generation processes studied to date …