Machine learning-based screening for potential singlet fission chromophores: The challenge of imbalanced data sets

L Borislavov, M Nedyalkova, A Tadjer… - The Journal of …, 2023 - ACS Publications
Excitation with one photon of a singlet fission (SF) material generates two triplet excitons,
thus doubling the solar cell efficiency. Therefore, the SF molecules are regarded as new …

Designing an Efficient Singlet Fission Material with B− N Substitution in Pyrene: A Model Exact Study

R Patra, M Das - The Journal of Physical Chemistry A, 2024 - ACS Publications
The electronic structure of boron (B)− nitrogen (N)-substituted pyrene molecules is the
center of attraction in designing an efficient intermolecular singlet fission (x-SF) material …

Diffusion Generative Models for Designing Efficient Singlet Fission Dimers

L Kreimendahl, M Karnaukh… - The Journal of Physical …, 2024 - ACS Publications
Diffusion generative models, a class of machine learning techniques, have shown
remarkable promise in materials science and chemistry by enabling the precise generation …

Computational design of singlet fission biradicaloid chromophores

D Accomasso, M Persico, G Granucci - Journal of Photochemistry and …, 2022 - Elsevier
We present three different computational designs of potential singlet fission chromophores.
In the first two cases, we propose structural modifications of two biradicaloid compounds …

Threshold photoelectron spectroscopy of iminoborane, HBNH

D Schleier, D Schaffner, M Gerlach… - Physical Chemistry …, 2022 - pubs.rsc.org
We report the mass-selected threshold photoelectron spectrum (ms-TPES) of iminoborane
(HBNH), generated by pyrolysis of borazine. The adiabatic ionization energy (IE) of the X+ …

Theoretical design of phosphorus-doped perylene derivatives as efficient singlet fission chromophores

T Li, L Xue, L Ma, X Wang, X Fan, B Cui… - Physical Chemistry …, 2024 - pubs.rsc.org
Singlet fission (SF) is considered as a promising strategy to overcome the Shockley–
Queisser limit of single-junction solar cells. However, only a handful of chromophores were …

Exploring optimal multimode vibronic pathways in singlet fission of azaborine analogues of perylene

R Walia, J Yang - Photochemical & Photobiological Sciences, 2022 - Springer
The development of new singlet fission chromophores is a vibrant area of research to
explore the possibility of efficient photovoltaic devices. Using high-level ab-initio density …

Functionality optimization for effective singlet fission coupling screening in the full-dimensional molecular and intermolecular coordinate space

JE Greiner, A Singh, MIS Röhr - Physical Chemistry Chemical Physics, 2024 - pubs.rsc.org
In computational chemistry, accurately predicting molecular configurations that exhibit
specific properties remains a critical challenge. Its intricacies become especially evident in …

Modulating singlet fission through interchromophoric rotation

SD Jadhav, D Sasikumar, M Hariharan - Physical Chemistry Chemical …, 2022 - pubs.rsc.org
Singlet fission (SF) is a spin-allowed, exciton-multiplying phenomenon that can be utilized to
improve the efficiency of organic solar cells. It is well-understood that SF is sensitive to the …

Effects of introducing nitrogen atoms into oligoacene skeleton on vibronic coupling and singlet fission dynamics

T Tonami, M Nakano, R Kishi, Y Kitagawa - Chemical Physics Letters, 2023 - Elsevier
We theoretically investigated the effects of introducing N atoms into the oligoacene
backbone on singlet fission (SF) dynamics via changes in the vibronic coupling (VC) …