標題: The influence of electron injection and charge recombination kinetics on the performance of porphyrin-sensitized solar cells: effects of the 4-tert-butylpyridine additive
作者: Chang, Yu-Cheng
Wu, Hui-Ping
Reddy, Nagannagari Masi
Lee, Hsuan-Wei
Lu, Hsueh-Pei
Yeh, Chen-Yu
Diau, Eric Wei-Guang
應用化學系
應用化學系分子科學碩博班
Department of Applied Chemistry
Institute of Molecular science
公開日期: 2013
摘要: The effects of the 4-tert-butylpyridine (TBP) additive in the electrolyte on photovoltaic performance of two push-pull porphyrin sensitizers (YD12 and YD12CN) were examined. Addition of TBP significantly increased the open-circuit voltage (V-OC) for YD12 (from 550 to 729 mV) but it was to a lesser extent for YD12CN (from 544 to 636 mV); adding TBP also had the effect of reducing the short-circuit current density (J(SC)) slightly for YD12 (from 17.65 to 17.19 mA cm(-2)) but it led to a significant reduction for YD12CN (from 16.45 to 9.78 mA cm(-2)). The resulting power conversion efficiencies of the YD12 devices increase from 6.2% to 8.5% whereas those of the YD12CN devices decrease from 5.8% to 4.5%. Based on measurements of temporally resolved photoelectric transients of the devices and femtosecond fluorescence decays of thin-film samples, the poor performance of the YD12CN device in the presence of TBP can be understood as being due to the enhanced charge recombination, decreased electron injection, and a lesser extent of inhibition of the intermolecular energy transfer.
URI: http://hdl.handle.net/11536/21480
http://dx.doi.org/10.1039/c3cp44555k
ISSN: 1463-9076
DOI: 10.1039/c3cp44555k
期刊: PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume: 15
Issue: 13
起始頁: 4651
結束頁: 4655
顯示於類別:期刊論文


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  1. 000315649500024.pdf