Novel organic dye sensitizers containing fluorenyl and biphenyl moieties for solar cells

Xie, Yan; Li, Han; Ge, Chengsheng; Cui, Yanhong; Gao, Jianrong

doi:10.1016/j.cclet.2016.06.042

Cited by 15 publications

(9 citation statements)

References 33 publications

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“…All reagents were purchased from Sigma–Aldrich or Alfa aesar. The sensitizers, AFL2 , and AFL3, were synthesized as previously reported . The absorption spectra were determined by a Shimadzu UV spectrophotometer (model UV2550), and fluorescence spectra by Shimadzu RF‐5301PC spectrofluorometer.…”

Section: Methodsmentioning

confidence: 99%

“…The absorption spectra were determined by a Shimadzu UV spectrophotometer (model UV2550), and fluorescence spectra by Shimadzu RF‐5301PC spectrofluorometer. The photoanode was prepared as reported previously , where an FTO glass was first cleaned in an ultrasonic bath followed by modification of the surface by two different titanium monoxide pastes deposited by screen‐printing method to yield the photoelectrodes. TiO 2 electrodes (0.16 cm 2 surface area, 18µm thick) containing light‐scattering anatase particles were then prepared.…”

Section: Methodsmentioning

confidence: 99%

“…In addition, it should retard the recombination of the injected electrons in the TiO 2 film with

{normalI}_{3}^{-}

and other acceptor materials . Two novel triarylamine organic dyes ( AFL2 , AFL3 ) were recently reported by us . The synthesis and optical properties of these co‐sensitizers were previously studies and discussed , and the corresponding chemical structures are shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…Two novel triarylamine organic dyes ( AFL2 , AFL3 ) were recently reported by us . The synthesis and optical properties of these co‐sensitizers were previously studies and discussed , and the corresponding chemical structures are shown in Fig. .…”

Section: Introductionmentioning

confidence: 99%

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Co‐sensitization by triarylamine dyes for improved dye‐sensitized solar cells

Xie

et al. 2017

Physica Status Solidi (a)

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To improve the performance of solar cells, two previous triarylamine dyes with different planarities reported by us, AFL2 and AFL3, were combined with dye D1 as a cosensitizer and tested for the co-sensitization of dyesensitized solar cells (DSSCs) without using Al 2 O 3 -coated TiO 2 . The photophysical and photovoltaic performance as well as the electrochemical properties of the co-sensitized DSSCs were investigated. The results suggested an enhancement of the efficiency, which was in accordance with the increase in molar ratio of AFL2 and the decrease of AFL3. Other data revealed that lower molar ratios of AFL2/D1 did not only compensate for the peak-valley of IPCE near 400 nm but also delayed charge recombination, and that AFL3/D1 at lower molar ratios could lead to dye aggregation. The photovoltaic efficiencies of the resulting AFL2 and AFL3 increased from 4.83% and 5.81-5.87% (ratio of 1:1) and 6.44% (ratio of 4:1), corresponding to 20 and 11% improvement, respectively.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

“…In addition, it should retard the recombination of the injected electrons in the TiO 2 film with

{normalI}_{3}^{-}

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Co‐sensitization by triarylamine dyes for improved dye‐sensitized solar cells

Xie

et al. 2017

Physica Status Solidi (a)

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“…Moreover, like anthracene, biphenyls play important roles as π-conjugated bridges, providing the system with properties suitable for UV and electro related applications. [17][18][19] In this work, 4-thieno [3,2-b]thiophen-3-ylbenzonitrile (TT-CN), having electron withdrawing cyano moiety, was polymerized with anthracene and biphenyl through Suzuki coupling to obtain the polymers P1 and P2, respectively. As an electron accepting group, CN moiety on TT makes the polymers suitable for donor-acceptor (D-A) systems.…”

Section: Introductionmentioning

confidence: 99%

Copolymers of 4‐thieno[3,2‐b]thiophen‐3‐ylbenzonitrile with anthracene and biphenyl; synthesis, characterization, electronic, optical, and thermal properties

İşci

Güntürkün

Yalin

et al. 2020

Journal of Polymer Science

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Two novel copolymers of 4-thieno[3,2-b]thiophen-3-ylbenzonitrile (TT-CN), possessing electron withdrawing cyano moiety, with anthracene (P1) and biphenyl (P2) were prepared via Suzuki coupling. Optic, electronic, and thermal properties of the copolymers were investigated through UV-Vis spectroscopy, cyclic voltammetry, gel permeation chromatography, and thermal gravimetric analysis. The polymers with anthracene and biphenyl had electronic band gaps of 2.01 and 1.90 eV, respectively. Both polymers demonstrated excellent large Stokes shifts of 101 (anthracene) and 105 nm (biphenyl) as well as very good thermal properties. As they had good optical, electronic, and thermal properties, they are promising candidates for electronic applications.

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The improved performance of dye‐sensitized solar cells using co‐sensitization and polymer gel electrolyte

Selvakumar

2022

Intl J of Energy Research

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To investigate the photovoltaic capabilities as a sensitizer and co-sensitizer for dye-sensitized solar cells (DSSCs), a new metal-free organic dye (CDIB) was synthesized. In addition, different concentrations of 1-n-hexyl-3-methylimidazolium iodide ionic liquid (IL) doped poly(vinylidene fluoride-hexafluoropropylene) gel polymer electrolytes are prepared and the high conductive electrolyte is used to fabricate the devices. The device having CDIB sensitizer and IL-15% electrolyte showed an efficiency of 1.86%. Further, the effect of CDIB co-sensitization on Z907 is examined. Consequently, the power conversion efficiency of DSSC with co-sensitized dye is raised by 23.29%, from 4.55 to 5.61%, when compared to DSSCs with individual dyes. This improvement is mostly due to an increase in a short-circuit current density and open-circuit voltage. Highlights• Co-sensitization is being used to enhance the performance of DSSCs.• Poly(vinylidene fluoride-hexafluoropropylene)-based gel polymer electrolytes doped with different amounts of 1-n-hexyl-3-methylimidazolium iodide were prepared for improving the conductivity of electrolyte.• A co-sensitized DSSC has an efficiency of 5.61%.• With co-sensitization, both V OC and J SC increased significantly.

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Novel organic dye sensitizers containing fluorenyl and biphenyl moieties for solar cells

Cited by 15 publications

References 33 publications

Co‐sensitization by triarylamine dyes for improved dye‐sensitized solar cells

Co‐sensitization by triarylamine dyes for improved dye‐sensitized solar cells

Copolymers of 4‐thieno[3,2‐b]thiophen‐3‐ylbenzonitrile with anthracene and biphenyl; synthesis, characterization, electronic, optical, and thermal properties

The improved performance of dye‐sensitized solar cells using co‐sensitization and polymer gel electrolyte

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