Organoboron donor-π-acceptor chromophores for small-molecule organic solar cells

Organoboron donor-π-acceptor chromophores for small-molecule organic solar cells

We introduce the use of facilely synthesizable and low-bandgap boron chromophores as donors in planar heterojunction solar cells. We show that simple changes in the compositional properties of these molecules can improve the performance of the devices. A simultaneous grafting of NO 2 acceptor and N(...

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Veröffentlicht in:Journal of materials science. Materials in electronics 2018-10, Vol.29 (19), p.16410-16415
Hauptverfasser: Nolasco, J. C., Ryan, J. W., Rodríguez, M., Castro-Carranza, A., Maldonado, J. L., Ramos-Ortiz, G., Barbosa-Garcia, O., Gutowski, J., Palomares, E., Parisi, J.
Format: Artikel
Sprache:eng
Schlagworte:
Boron
Characterization and Evaluation of Materials
Chemical synthesis
Chemistry and Materials Science
Chromophores
Heterojunctions
Materials Science
Molecular chains
Nitrogen dioxide
Optical and Electronic Materials
Organic chemistry
Performance enhancement
Photoelectric effect
Photoelectric emission
Photovoltaic cells
Solar cells
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Zusammenfassung:We introduce the use of facilely synthesizable and low-bandgap boron chromophores as donors in planar heterojunction solar cells. We show that simple changes in the compositional properties of these molecules can improve the performance of the devices. A simultaneous grafting of NO 2 acceptor and N(Et 2 ) donor groups into the molecule core causes an increase in efficiency of almost 50%. Such enhanced efficiency is mainly due to a higher photocurrent. The origin of this phenomenon is investigated.
ISSN:0957-4522
1573-482X
DOI:10.1007/s10854-018-9732-6