Microstructure determines crystallinity-driven singlet fission efficiency in diF-TES-ADT
Abstract Singlet fission (SF) describes the conversion of a single photon-generated excited state into two triplet excitons through an initial singlet state. Despite its significance for solar energy applications, the relationship between microstructure, temperature, and SF efficiency remains poorly...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2025-07-01
|
| Series: | Scientific Reports |
| Online Access: | https://doi.org/10.1038/s41598-025-08427-y |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849335250539249664 |
|---|---|
| author | Hoyeon Choi Stefan Skalsky David G. Bossanyi Jenny Clark Patrick Parkinson |
| author_facet | Hoyeon Choi Stefan Skalsky David G. Bossanyi Jenny Clark Patrick Parkinson |
| author_sort | Hoyeon Choi |
| collection | DOAJ |
| description | Abstract Singlet fission (SF) describes the conversion of a single photon-generated excited state into two triplet excitons through an initial singlet state. Despite its significance for solar energy applications, the relationship between microstructure, temperature, and SF efficiency remains poorly understood. Using cryogenic fluorescence microscopy, we correlate primary singlet fission (PSF) efficiency with local film morphology in a prototypical high-efficiency anthradithiophene (diF-TES-ADT) thin film. Our hyperspectral microscopy measurements of absorption and emission with sub-micron resolution reveal spatially inhomogeneous PSF efficiency that correlates directly with local crystallinity. Temperature- and time-resolved spectroscopy demonstrate that enhanced PSF efficiency in highly crystalline regions results from favorable endothermic alignment of a charge-transfer (CT) state. These findings emphasize how spatial inhomogeneity critically impacts SF film performance and caution against relying solely on spatially averaged metrics when evaluating SF materials. |
| format | Article |
| id | doaj-art-e2f47358c6bb49b3ab078d25ab5fa675 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-e2f47358c6bb49b3ab078d25ab5fa6752025-08-20T03:45:20ZengNature PortfolioScientific Reports2045-23222025-07-011511910.1038/s41598-025-08427-yMicrostructure determines crystallinity-driven singlet fission efficiency in diF-TES-ADTHoyeon Choi0Stefan Skalsky1David G. Bossanyi2Jenny Clark3Patrick Parkinson4Department of Physics and Astronomy and the Photon Science Institute, University of ManchesterDepartment of Physics and Astronomy and the Photon Science Institute, University of ManchesterSchool of Mathematical and Physical Sciences, The University of SheffieldSchool of Mathematical and Physical Sciences, The University of SheffieldDepartment of Physics and Astronomy and the Photon Science Institute, University of ManchesterAbstract Singlet fission (SF) describes the conversion of a single photon-generated excited state into two triplet excitons through an initial singlet state. Despite its significance for solar energy applications, the relationship between microstructure, temperature, and SF efficiency remains poorly understood. Using cryogenic fluorescence microscopy, we correlate primary singlet fission (PSF) efficiency with local film morphology in a prototypical high-efficiency anthradithiophene (diF-TES-ADT) thin film. Our hyperspectral microscopy measurements of absorption and emission with sub-micron resolution reveal spatially inhomogeneous PSF efficiency that correlates directly with local crystallinity. Temperature- and time-resolved spectroscopy demonstrate that enhanced PSF efficiency in highly crystalline regions results from favorable endothermic alignment of a charge-transfer (CT) state. These findings emphasize how spatial inhomogeneity critically impacts SF film performance and caution against relying solely on spatially averaged metrics when evaluating SF materials.https://doi.org/10.1038/s41598-025-08427-y |
| spellingShingle | Hoyeon Choi Stefan Skalsky David G. Bossanyi Jenny Clark Patrick Parkinson Microstructure determines crystallinity-driven singlet fission efficiency in diF-TES-ADT Scientific Reports |
| title | Microstructure determines crystallinity-driven singlet fission efficiency in diF-TES-ADT |
| title_full | Microstructure determines crystallinity-driven singlet fission efficiency in diF-TES-ADT |
| title_fullStr | Microstructure determines crystallinity-driven singlet fission efficiency in diF-TES-ADT |
| title_full_unstemmed | Microstructure determines crystallinity-driven singlet fission efficiency in diF-TES-ADT |
| title_short | Microstructure determines crystallinity-driven singlet fission efficiency in diF-TES-ADT |
| title_sort | microstructure determines crystallinity driven singlet fission efficiency in dif tes adt |
| url | https://doi.org/10.1038/s41598-025-08427-y |
| work_keys_str_mv | AT hoyeonchoi microstructuredeterminescrystallinitydrivensingletfissionefficiencyindiftesadt AT stefanskalsky microstructuredeterminescrystallinitydrivensingletfissionefficiencyindiftesadt AT davidgbossanyi microstructuredeterminescrystallinitydrivensingletfissionefficiencyindiftesadt AT jennyclark microstructuredeterminescrystallinitydrivensingletfissionefficiencyindiftesadt AT patrickparkinson microstructuredeterminescrystallinitydrivensingletfissionefficiencyindiftesadt |