期刊
NEW JOURNAL OF CHEMISTRY
卷 38, 期 4, 页码 1565-1572出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3nj01643a
关键词
-
资金
- Council on Faculty Research Grant, Eastern Illinois University
- National Science Foundation/EPSCoR [0903804]
- Division of Chemical Sciences, Geosciences, and Biosciences, Office of Basic Energy Sciences, U.S. Department of Energy [DE-AC36-08GO28308]
- EPSCoR
- Office Of The Director [0903804] Funding Source: National Science Foundation
Three porphyrin dyes, DPZn-HOQ, PZn-HOQ and DPZn-COOH, were synthesized and characterized for dyesensitized solar cells. Both DPZn-HOQ and DPZn-COOH exhibited a donor-p-acceptor configuration with N,N-dimethylaniline as a donor and 8-hydroxylquinoline (HOQ) and para-benzoic acid (BZA) as acceptors, respectively. PZn-HOQ is an analogue of DPZn-HOQ without a donor. It was found that DPZn-HOQ exhibited broader and stronger light absorption capability in the red region than DPZn-COOH. Theoretical calculations showed that the electrons were delocalized to the 8-hydroxylquinoline ring in DPZN-HOQ. The DPZn-HOQ-sensitized solar cells exhibited higher energy conversion efficiency (3.09%) than DPZn-COOH-sensitized solar cells (1.76%) under the same conditions. The results were consistent with the incident photon to current conversion efficiency (IPCE) spectra. The electrochemical impedance spectroscopy studies revealed that HOQ-conjugated porphyrin exhibited high electron recombination resistance and a long electron lifetime, which was attributed to the effective shielding of DPZn-HOQ from the electrolyte due to its tilted orientation on the surface of TiO2 nanoparticles. The efficiency of DPZn-HOQ-sensitized solar cells was further increased to 3.41% when a complementary dye BET was used.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据