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 …

Recent advances in singlet fission

MB Smith, J Michl - Annual review of physical chemistry, 2013 - annualreviews.org
A survey is provided of recent progress in the understanding of singlet fission, a spin-
allowed process in which a singlet excited molecule shares its energy with a ground-state …

Ultrafast long-range charge separation in organic semiconductor photovoltaic diodes

S Gélinas, A Rao, A Kumar, SL Smith, AW Chin, J Clark… - Science, 2014 - science.org
Understanding the charge-separation mechanism in organic photovoltaic cells (OPVs) could
facilitate optimization of their overall efficiency. Here we report the time dependence of the …

Exciton diffusion in conjugated polymers: from fundamental understanding to improvement in photovoltaic conversion efficiency

Y Tamai, H Ohkita, H Benten, S Ito - The journal of physical …, 2015 - ACS Publications
Singlet exciton diffusion plays a central role in the photovoltaic conversion in organic
photovoltaics (OPVs). Upon light absorption, singlet excitons are promptly generated in …

Real-time observation of multiexcitonic states in ultrafast singlet fission using coherent 2D electronic spectroscopy

AA Bakulin, SE Morgan, TB Kehoe, MWB Wilson… - Nature …, 2016 - nature.com
Singlet fission is the spin-allowed conversion of a spin-singlet exciton into a pair of spin-
triplet excitons residing on neighbouring molecules. To rationalize this phenomenon, a …

Quintet multiexciton dynamics in singlet fission

MJY Tayebjee, SN Sanders, E Kumarasamy… - Nature Physics, 2017 - nature.com
Singlet fission, in which two triplet excitons are generated from a single absorbed photon, is
a key third-generation solar cell concept. Conservation of angular momentum requires that …

Evidence for conical intersection dynamics mediating ultrafast singlet exciton fission

AJ Musser, M Liebel, C Schnedermann, T Wende… - Nature Physics, 2015 - nature.com
Singlet exciton fission is the process in organic semiconductors through which a spin-singlet
exciton converts into a pair of spin-triplet excitons residing on different chromophores …

Singlet fission involves an interplay between energetic driving force and electronic coupling in perylenediimide films

AK Le, JA Bender, DH Arias, DE Cotton… - Journal of the …, 2018 - ACS Publications
Due to its ability to offset thermalization losses in photoharvesting systems, singlet fission
has become a topic of research interest. During singlet fission, a high energy spin-singlet …

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 …

Resonant energy transfer of triplet excitons from pentacene to PbSe nanocrystals

M Tabachnyk, B Ehrler, S Gélinas, ML Böhm… - Nature materials, 2014 - nature.com
The efficient transfer of energy between organic and inorganic semiconductors is a widely
sought after property, but has so far been limited to the transfer of spin-singlet excitons. Here …