Robust singlet fission in pentacene thin films with tuned charge transfer 
interactions

Broch, Katharina; Dieterle, J.; Branchi, F.; Hestand, N. J.; Olivier, Y.; Tamura, H.; Cruz, C.; Nichols, V. M.; Hinderhofer, A.; Beljonne, D.; Spano, F. C.; Cerullo, G.; Bardeen, C. J.; Schreiber, F.

doi:10.1038/s41467-018-03300-1

アイテム詳細

登録内容を編集ファイル形式で保存

一時保存へ追加

タグ情報を表示リリース履歴を表示詳細要約

公開

学術論文

Robust singlet fission in pentacene thin films with tuned charge transfer interactions

MPS-Authors

/persons/resource/persons199243

Broch, Katharina
Physical Chemistry, Fritz Haber Institute, Max Planck Society;
Institute of Applied Physics and Center for Light Matter Interactions, Sensors and Analytics, LISA+, University of Tübingen;

Dieterle, J.
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

Hinderhofer, A.
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

Schreiber, F.
Physical Chemistry, Fritz Haber Institute, Max Planck Society;

External Resource

There are no locators available

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

フルテキスト (公開)

s41467-018-03300-1.pdf
(出版社版), 2MB

付随資料 (公開)

There is no public supplementary material available

引用

Broch, K., Dieterle, J., Branchi, F., Hestand, N. J., Olivier, Y., Tamura, H., Cruz, C., Nichols, V. M., Hinderhofer, A., Beljonne, D., Spano, F. C., Cerullo, G., Bardeen, C. J., & Schreiber, F. (2018). Robust singlet fission in pentacene thin films with tuned charge transfer interactions. Nature Communications, 9:. doi:10.1038/s41467-018-03300-1.

引用: https://hdl.handle.net/21.11116/0000-0000-EDB4-A

要旨

Singlet fission, the spin-allowed photophysical process converting an excited singlet state into two triplet states, has attracted significant attention for device applications. Research so far has focused mainly on the understanding of singlet fission in pure materials, yet blends offer the promise of a controlled tuning of intermolecular interactions, impacting singlet fission efficiencies. Here we report a study of singlet fission in mixtures of pentacene with weakly interacting spacer molecules. Comparison of experimentally determined stationary optical properties and theoretical calculations indicates a reduction of charge-transfer interactions between pentacene molecules with increasing spacer molecule fraction. Theory predicts that the reduced interactions slow down singlet fission in these blends, but surprisingly we find that singlet fission occurs on a timescale comparable to that in pure crystalline pentacene. We explain the observed robustness of singlet fission in such mixed films by a mechanism of exciton diffusion to hot spots with closer intermolecular spacings.