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Frontiers of Optoelectronics

ISSN 2095-2759

ISSN 2095-2767(Online)

CN 10-1029/TN

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Front Optoelec Chin    2011, Vol. 4 Issue (1) : 87-92    https://doi.org/10.1007/s12200-011-0210-5
RESEARCH ARTICLE
Synthesis and photovoltaic property of pyrrole-based conjugated oligomer as organic dye for dye-sensitized solar cells
Qianqian LI1, Wenjun WU2, Aoshu ZHONG1, Jianli HUA2, Ming PENG1, Jing HUANG1, Jie SHI1, He TIAN2, Jingui QIN1, Zhen LI1()
1. Department of Chemistry, Wuhan University, Wuhan 430072, China; 2. Key Laboratory for Advanced Materials and Institute of Fine Chemicals, East China University of Science & Technology, Shanghai 200237, China
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Abstract

A new pyrrole-based conjugated oligomer (P1) was obtained with phenyl-linked triphenylamine moieties as an isolation group. Little aggregations were observed whether oligomer P1 was absorbed on titanium dioxide (TiO2) surface or in solid state. Since the pyrrole-based moieties in donor-π-acceptor type was the core component of oligomer P1 for light absorption, the corresponding dye-sensitized solar cell (DSSC) demonstrated the efficiency of light-to-electrical conversion by 0.48%. Higher conversion efficiency could be achieved by tuning the size of the isolation groups and the structure of the donor-π-acceptor type dyes.
Keywords pyrrole      synthesis      dye sensitizer      oligomer     
Corresponding Author(s): LI Zhen,Email:lizhen@whu.edu.cn   
Issue Date: 05 March 2011
 Cite this article:   
Qianqian LI,Jianli HUA,Ming PENG, et al. Synthesis and photovoltaic property of pyrrole-based conjugated oligomer as organic dye for dye-sensitized solar cells[J]. Front Optoelec Chin, 2011, 4(1): 87-92.
 URL:  
https://academic.hep.com.cn/foe/EN/10.1007/s12200-011-0210-5
https://academic.hep.com.cn/foe/EN/Y2011/V4/I1/87
Fig.1  
Fig.1  
Fig.2  IR spectra of monomer 1, oligomer P0 and P1
Fig.2  IR spectra of monomer 1, oligomer P0 and P1
Fig.3  UV-vis spectra of oligomer P1
Fig.3  UV-vis spectra of oligomer P1
dyeMwa)Mw/Mna)λmax/nmb)? at λmax/(M-1·cm-1)b)λmax/nmc)E0-0/eVd)Eox/Ve)vs NHEEred/Ve)vs NHEEgap/Vf)
LI-134001.5462218004652.160.89-1.270.77
Tab.1  Some characterization data of P1
Fig.4  Cyclic voltammograms of P1 films on platinum electrode in 0.1 mol/L BuNPF, CHCN solution with a scan rate of 100 mV/s
Fig.4  Cyclic voltammograms of P1 films on platinum electrode in 0.1 mol/L BuNPF, CHCN solution with a scan rate of 100 mV/s
Fig.5  Schematic representation of the band positions in DSSCs based on oligomer P1. Energy scale is indicated in electron volts using the normal hydrogen electrode (NHE)
Fig.5  Schematic representation of the band positions in DSSCs based on oligomer P1. Energy scale is indicated in electron volts using the normal hydrogen electrode (NHE)
Fig.6  Current density-voltage characteristics obtained with a nanocrystalline TiO film supported on FTO conducting glass and derivatized with monolayer of the oligomer P1
Fig.6  Current density-voltage characteristics obtained with a nanocrystalline TiO film supported on FTO conducting glass and derivatized with monolayer of the oligomer P1
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