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 …

Intramolecular singlet fission and triplet exciton harvesting in tetracene oligomers for solar energy conversion

T Wang, H Liu, X Wang, L Tang, J Zhou… - Journal of Materials …, 2023 - pubs.rsc.org
Singlet fission (SF), which can convert one singlet exciton into two triplet excitons, has the
potential to enhance the solar energy conversion efficiency in devices such as photovoltaic …

Controlling Intramolecular Singlet Fission Dynamics via Torsional Modulation of Through-Bond versus Through-Space Couplings

K Majumder, S Mukherjee, NA Panjwani… - Journal of the …, 2023 - ACS Publications
Covalent dimers, particularly pentacenes, are the dominant platform for developing a
mechanistic understanding of intramolecular singlet fission (iSF). Numerous studies have …

Quantum interference effects elucidate triplet-pair formation dynamics in intramolecular singlet-fission molecules

KR Parenti, R Chesler, G He, P Bhattacharyya… - Nature Chemistry, 2023 - nature.com
Quantum interference (QI)—the constructive or destructive interference of conduction
pathways through molecular orbitals—plays a fundamental role in enhancing or …

Unraveling Triplet Formation Mechanisms in Acenothiophene Chromophores

G He, KR Parenti, PJ Budden, J Niklas… - Journal of the …, 2023 - ACS Publications
The evolution of molecular platforms for singlet fission (SF) chromophores has fueled the
quest for new compounds capable of generating triplets quantitatively at fast time scales. As …

Direct exciton harvesting from a bound triplet pair

G He, KR Parenti, LM Campos, MY Sfeir - Advanced Materials, 2022 - Wiley Online Library
Singlet fission is commonly defined as the generation of two triplet excitons from a single
absorbed photon. However, ambiguities within this definition arise due to the complexity of …

Quantifying exciton transport in singlet fission diblock copolymers

G He, LM Yablon, KR Parenti, KJ Fallon… - Journal of the …, 2022 - ACS Publications
Singlet fission (SF) is a mechanism of exciton multiplication in organic chromophores, which
has potential to drive highly efficient optoelectronic devices. Creating effective device …

A Symmetry‐Broken Charge‐Separated State in the Marcus Inverted Region

E Sebastian, M Hariharan - Angewandte Chemie International …, 2023 - Wiley Online Library
We report a long‐lived charge‐separated state in a chromophoric pair (DC‐PDI2) that
uniquely integrates the advantages of fundamental processes of photosynthetic reaction …

Achieving symmetry-breaking charge separation in perylenediimide trimers: The effect of bridge resonance

K Wang, G Shao, S Peng, X You, X Chen… - The Journal of …, 2022 - ACS Publications
Symmetry-breaking charge separation (SB-CS) provides a very promising option to
engineer a novel light conversion scheme, while it is still a challenge to realize SB-CS in a …

Singlet fission and triplet pair recombination in bipentacenes with a twist

LM Yablon, SN Sanders, K Miyazaki… - Materials …, 2022 - pubs.rsc.org
We investigate triplet pair dynamics in pentacene dimers that have varying degrees of
coplanarity (pentacene–pentacene twist angle). The fine-tuning of the twist angle was …