Diau, Yeh et al. studied the effects of the 4-tert-butylpyridine (TBP) additive in the electrolyte on the performance of two different porphyrin sensitizers from both photoelectric and photophysical points of views.
The scientists from Taiwan carried out time-resolved investigations of thin-film samples using femtosecond fluorescence up-conversion spectroscopy, charge extraction and transient photoelectric measurements of the corresponding devices. The two push-pull porphyrin sensitizers, which had different anchoring groups, showed similar device performance without TBP. Upon addition of TBP, the power conversion efficiency of the device containing one dye increased, and the device containing the other decreased.
Read more in this HOT PCCP article today:
The influence of electron injection and charge recombination kinetics on the performance of porphyrin-sensitized solar cells: effects of the 4-tert-butylpyridine additive
Yu-Cheng Chang, Hui-Ping Wu, Nagannagari Masi Reddy, Hsuan-Wei Lee, Hsueh-Pei Lu, Chen-Yu Yeh and Eric Wei-Guang Diau
DOI: 10.1039/C3CP44555K
