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DOI | 10.1038/s41467-018-07457-7 |
Robust singlet fission in pentacene thin films with tuned charge transfer interactions | |
Broch, K.1,2,3; Dieterle, J.1,2; Branchi, F.4; Hestand, N. J.5; Olivier, Y.6; Tamura, H.7; Cruz, C.8; Nichols, V. M.8; Hinderhofer, A.1,2; Beljonne, D.6,9,10; Spano, F. C.5; Cerullo, G.4; Bardeen, C. J.8; Schreiber, F.1,2 | |
2018-03-05 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2018 |
卷号 | 9 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Italy; USA; Belgium; Japan |
英文摘要 | 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. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000426544200005 |
WOS关键词 | EXCITON FISSION ; ULTRAFAST DYNAMICS ; SPECTRA ; MODEL ; INTERFERENCE ; SPECTROSCOPY ; PHOTOPHYSICS ; ABSORPTION ; TETRACENE ; PICENE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204099 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Tubingen, LISA, Inst Appl Phys, Morgenstelle 10, D-72076 Tubingen, Germany; 2.Univ Tubingen, LISA, Ctr Light Matter Interact Sensors & Analyt, Morgenstelle 10, D-72076 Tubingen, Germany; 3.Fritz Haber Inst Max Planck Soc, Faradayweg 4-6, D-14195 Berlin, Germany; 4.Politecn Milan, Dipartimento Fis, CNR, IFN, I-20133 Milan, Italy; 5.Temple Univ, Dept Chem, Philadelphia, PA 19122 USA; 6.Univ Mons, Lab Chem Novel Mat, Pl Parc 20, B-7000 Mons, Belgium; 7.Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan; 8.Univ Calif Riverside, Dept Chem, 501 Big Springs Rd, Riverside, CA 92521 USA; 9.Georgia Inst Technol, Sch Chem & Biochem, Atlanta, GA 30332 USA; 10.Georgia Inst Technol, Ctr Organ Photon & Elect, Atlanta, GA 30332 USA |
推荐引用方式 GB/T 7714 | Broch, K.,Dieterle, J.,Branchi, F.,et al. Robust singlet fission in pentacene thin films with tuned charge transfer interactions[J]. NATURE COMMUNICATIONS,2018,9. |
APA | Broch, K..,Dieterle, J..,Branchi, F..,Hestand, N. J..,Olivier, Y..,...&Schreiber, F..(2018).Robust singlet fission in pentacene thin films with tuned charge transfer interactions.NATURE COMMUNICATIONS,9. |
MLA | Broch, K.,et al."Robust singlet fission in pentacene thin films with tuned charge transfer interactions".NATURE COMMUNICATIONS 9(2018). |
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