Aggregation-Induced Emission in a Polymeric Photovoltaic Donor Material
(2022) In Journal of Physical Chemistry C 126(48). p.20275-20283- Abstract
In this work, we report the aggregation-induced emission in a polymeric donor material poly(bis(2-butyloctyl)[2,2′:5′,2″-terthiophene]-4,4″-dicarboxylate-5,5′-diyl-vinylene) (PTVT-T), which exhibits a high device performance for the application of photovoltaics. Time-dependent density functional theory calculations and steady-state and time-resolved spectroscopy have been employed to reveal the underlying emission mechanism. We find that the aggregation of the PTVT-T polymer chain in solution increases the exciton luminescence lifetime and exciton emission quantum yield, which is related to the effective torsional inhibition of carbon-carbon single bonds. Compared with the aggregates in solution, the exciton emission quantum yield of... (More)
In this work, we report the aggregation-induced emission in a polymeric donor material poly(bis(2-butyloctyl)[2,2′:5′,2″-terthiophene]-4,4″-dicarboxylate-5,5′-diyl-vinylene) (PTVT-T), which exhibits a high device performance for the application of photovoltaics. Time-dependent density functional theory calculations and steady-state and time-resolved spectroscopy have been employed to reveal the underlying emission mechanism. We find that the aggregation of the PTVT-T polymer chain in solution increases the exciton luminescence lifetime and exciton emission quantum yield, which is related to the effective torsional inhibition of carbon-carbon single bonds. Compared with the aggregates in solution, the exciton emission quantum yield of the aggregates in PTVT-T film is reduced. It is attributable to exciton delocalization caused by the improvement of molecular planarity in film. We also observe that the as-cast film and thermally annealed film show distinctly different emission behaviors. This work can shed light on designing optoelectronic polymer materials with the integration of photovoltaic and light-emitting functions.
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- author
- Feng, Junyi ; Hu, Rong ; Jiang, Jianjun ; Cai, Zekai ; Pan, Shusheng ; Zou, Xianshao LU ; Dong, Geng LU ; Zhao, Ningjiu and Zhang, Wei LU
- organization
- publishing date
- 2022-12
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Journal of Physical Chemistry C
- volume
- 126
- issue
- 48
- pages
- 9 pages
- publisher
- The American Chemical Society (ACS)
- external identifiers
-
- scopus:85143551593
- ISSN
- 1932-7447
- DOI
- 10.1021/acs.jpcc.2c06848
- language
- English
- LU publication?
- yes
- id
- 14d6f2f3-5e29-4edb-a43f-fe3ef63a3c62
- date added to LUP
- 2023-01-20 15:44:33
- date last changed
- 2023-11-21 15:57:25
@article{14d6f2f3-5e29-4edb-a43f-fe3ef63a3c62, abstract = {{<p>In this work, we report the aggregation-induced emission in a polymeric donor material poly(bis(2-butyloctyl)[2,2′:5′,2″-terthiophene]-4,4″-dicarboxylate-5,5′-diyl-vinylene) (PTVT-T), which exhibits a high device performance for the application of photovoltaics. Time-dependent density functional theory calculations and steady-state and time-resolved spectroscopy have been employed to reveal the underlying emission mechanism. We find that the aggregation of the PTVT-T polymer chain in solution increases the exciton luminescence lifetime and exciton emission quantum yield, which is related to the effective torsional inhibition of carbon-carbon single bonds. Compared with the aggregates in solution, the exciton emission quantum yield of the aggregates in PTVT-T film is reduced. It is attributable to exciton delocalization caused by the improvement of molecular planarity in film. We also observe that the as-cast film and thermally annealed film show distinctly different emission behaviors. This work can shed light on designing optoelectronic polymer materials with the integration of photovoltaic and light-emitting functions.</p>}}, author = {{Feng, Junyi and Hu, Rong and Jiang, Jianjun and Cai, Zekai and Pan, Shusheng and Zou, Xianshao and Dong, Geng and Zhao, Ningjiu and Zhang, Wei}}, issn = {{1932-7447}}, language = {{eng}}, number = {{48}}, pages = {{20275--20283}}, publisher = {{The American Chemical Society (ACS)}}, series = {{Journal of Physical Chemistry C}}, title = {{Aggregation-Induced Emission in a Polymeric Photovoltaic Donor Material}}, url = {{http://dx.doi.org/10.1021/acs.jpcc.2c06848}}, doi = {{10.1021/acs.jpcc.2c06848}}, volume = {{126}}, year = {{2022}}, }