Impact of S1→S0 internal conversion in betalain-based dye sensitized solar cells
Authors:
- Monika Wendel,
- Agnieszka Kumorkiewicz,
- Sławomir Wybraniec,
- Marcin Ziółek,
- Gotard Burdziński
Abstract
Betalains are natural dyes which can be used in non-toxic environmentally friendly dye-sensitized solar cells (DSSC). In this paper we provide results characterizing the performance of DSSC constructed using betanin, 2,17-bidecarboxybetanin, vulgaxanthin I and betanidin-6-O-(6′,6″-di-O-trans-4-coumaroyl)-β-sophoroside, as well from the red beetroot aqueous extract. The photovoltaic parameters of the cells correlate with the results of time-resolved measurements for fully assembled cells. We reveal that insufficient electron injection quantum yield is mainly responsible for the limited sunlight conversion efficiency. In betacyanin-based DSSC, only about 50% of the excited dye molecules inject electrons, while the rest suffer from a dye S1 fast internal conversion process. In betaxanthin-based DSSC, the quantum yield of electron injection is higher (about 70%), but the total sunlight conversion efficiency is smaller due to the blue-shifted absorption band. A probable explanation of the differences in the electron injection quantum yields in the studied dyes is that of different rates of the competing S1→S0 internal conversion processes.
- Record ID
- CUT4cb66fa4ed154a539d8ebd1af7908fcf
- Publication categories
- ;
- Author
- Journal series
- Dyes and Pigments, ISSN 0143-7208, e-ISSN 1873-3743
- Issue year
- 2017
- Vol
- 141
- Pages
- 306-315
- Other elements of collation
- tab.; wykr.; Bibliografia (na s.) - 314-315; Bibliografia (liczba pozycji) - 50; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 141
- Keywords in English
- betanin, vulgaxanthin I, red beetroot, transient absorption, dye-sensitized solar cell
- DOI
- DOI:10.1016/j.dyepig.2017.02.026 Opening in a new tab
- URL
- http://www.sciencedirect.com/science/article/pii/S0143720816314875 Opening in a new tab
- Language
- eng (en) English
- Score (nominal)
- 40
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUT4cb66fa4ed154a539d8ebd1af7908fcf/
- URN
urn:pkr-prod:CUT4cb66fa4ed154a539d8ebd1af7908fcf
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.