期刊
JOURNAL OF POWER SOURCES
卷 506, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.jpowsour.2021.230214
关键词
Dye-sensitized solar cells; Organic sensitizers; Rhodanine electron acceptor; Alkyl chain engineering; Interface charge transfer
资金
- Sichuan Science and Technology Program [2019YJ0162]
- National Natural Science Foundation of China [21402023]
By improving the CRD electron acceptor, the efficiency of DSSC is increased, with the use of alkyl chain engineering to inhibit intermolecular aggregation and electron recombination, resulting in an unexpected PCE of 9.02%.
The power conversion efficiency (PCE) of dye-sensitized solar cell (DSSC) based on a sensitizer with a conjugated rhodanine (CRD) electron acceptor is increased by two times as compared with DSSC based on a sensitizer with nonconjugated rhodanine-3-acetic acid in our previous work. Herein, alkyl chain engineering is further introduced into the N position of the CRD electron acceptor to inhibit the intermolecular aggregation and electron recombination utilizing the tunable alkyl chains as the barrier layer. Finally, the PCE of DSSC based on sensitizer with CRD electron acceptor is further improved, and an unexpected PCE of 9.02% is achieved using a simple triphenylamine sensitizer based on CRD electron acceptor with suitable alkyl chain.
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