Influence of donor and bridge structure in D–A–π–A indoline dyes on the photovoltaic properties of dye-sensitized solar cells employing iodine/cobalt electrolyte

Wang, Lina; Liang, Mao; Zhang, Yue; Cheng, Fangyi; Wang, Xuda; Sun, Zhe; Xue, Song

doi:10.1016/j.dyepig.2013.10.016

Cited by 28 publications

(6 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, for the cells made with indoline dyes, with a planar geometry and a high molar absorption coefficient adsorbed on the thin film of titanium dioxide, high power conversion efficiency values (up to 9.1%) were obtained depending on the alkyl chain length . The cells with indoline dyes and Co(II/III)tris(1,10-phenanthroline)-based electrolyte (Co-phen) were studied with D–A−π–A indoline dyes (Ddonor, Aacceptor part) . In that work, the basic photovoltaic parameters for the cobalt-based cells were lower than for the iodide-based ones.…”

Section: Introductionmentioning

confidence: 99%

Testing New Concepts in Solar Cells Sensitized with Indoline Dyes—Alkoxysilyl Anchoring Group, Molecular Capping, and Cobalt-Based Electrolyte

et al. 2018

View full text Add to dashboard Cite

Basic photovoltaic parameters of the cells sensitized with a popular indoline D149 dye, containing the carboxyl anchoring group, were compared with those of the cells sensitized with the dye modified by the addition of the alkoxysilyl anchoring moiety. Desorption measurements of both compounds showed that the time constant of this process was longer for the modified dye. Two types of electrolytes were used, and the long-time stability and open-circuit voltage were significantly improved when the iodide electrolyte was replaced by the cobalt−bipyridine one. The dynamics of electron injection and titania−electrolyte recombination processes that occur in different time scales, from femtoseconds to seconds, were monitored by femtosecond transient absorption and electrochemical impedance spectroscopy. Additionally, the effect of molecular passivation by post-sensitization capping was checked. The cells after molecular capping showed better relative photocurrent and longer lifetime of the excited state, which was explained as resulting from the suppressed self-quenching of the dyes.

show abstract

Section: Introductionmentioning

confidence: 99%

Testing New Concepts in Solar Cells Sensitized with Indoline Dyes—Alkoxysilyl Anchoring Group, Molecular Capping, and Cobalt-Based Electrolyte

et al. 2018

View full text Add to dashboard Cite

show abstract

“…More and more efforts have been dedicated to the development of metal-free organic dyes which exhibit not only higher molar extinction coefficients, but also simple preparation and purification procedures at lower cost. A large number of organic dyes containing nitrogenous electron donors such as merocyanine [6], indoline [7,8], triphenylamine [9,10], carbazole [11,12] and phenothiazine [13,14] have been used with great success in DSSCs.…”

Section: Introductionmentioning

confidence: 99%

Comparative study on photovoltaic properties of imidazole-based dyes containing varying electron acceptors in dye-sensitized solar cells

et al. 2014

View full text Add to dashboard Cite

“…4-(p-Tolyl)-1,2,3,3a,4,8b-hexahydrocyclopenta[b]indole donor has been shown to be one of the most effective donors [20,22]. A few attempts to modify this moiety with a change of p-tolyl to other aryl groups have been made [31][32][33][34][35][36][37][38][39], but they have not achieved significant success.…”

Section: Introductionmentioning

confidence: 99%

9-(p-Tolyl)-2,3,4,4a,9,9a-hexahydro-1H-carbazole—A new donor building-block in the design of sensitizers for dye-sensitized solar cells

Mikhailov

Gudim

Knyazeva

et al. 2020

Journal of Photochemistry and Photobiology A: Chemistry

View full text Add to dashboard Cite

The novel donor building-block-9-(p-tolyl)-2,3,4,4a,9,9a-hexahydro-1H-carbazole was designed and employed in the synthesis of dye-sensitized solar cell (DSSCs). An effective, high-yielding synthesis of 4,6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-9-(p-tolyl)-1,2,3,4,4a,9a-hexahydrocarbazole from 1,2,3,4,4a,9a-hexahydrocarbazole was realized. Three new metal-free organic sensitizers, containing the new donor building block were prepared by a stepwise approach from 4,7-dibromobenzo[c][1,2,5]chacogenadiazoles. A 2,1,3-Benzothiadiazole dye containing hexahydrocarbazole donor, thiophene as π-spacer and cyanoacrylate as anchoring electron acceptor showed photovoltaic properties higher than the well-known WS-2 sensitizer with PCE = 5.86%. Although benzoxa-and-selenadiazole dyes have a bathochromic shift (24-30 nm) in the UV-vis spectra, and smaller energy gap Eg (about 0.1 eV), they have lower photovoltaic parameters, including PCE of 1.5-2.3%. Introducing a new donor 9-(p-tolyl)-2,3,4,4a,9,9a-hexahydro-1H-carbazole into the construction of the DSSCs has broadened possibilities for the optimization of their photovoltaic properties.

show abstract

Influence of donor and bridge structure in D–A–π–A indoline dyes on the photovoltaic properties of dye-sensitized solar cells employing iodine/cobalt electrolyte

Cited by 28 publications

References 48 publications

Testing New Concepts in Solar Cells Sensitized with Indoline Dyes—Alkoxysilyl Anchoring Group, Molecular Capping, and Cobalt-Based Electrolyte

Testing New Concepts in Solar Cells Sensitized with Indoline Dyes—Alkoxysilyl Anchoring Group, Molecular Capping, and Cobalt-Based Electrolyte

Comparative study on photovoltaic properties of imidazole-based dyes containing varying electron acceptors in dye-sensitized solar cells

9-(p-Tolyl)-2,3,4,4a,9,9a-hexahydro-1H-carbazole—A new donor building-block in the design of sensitizers for dye-sensitized solar cells

Contact Info

Product

Resources

About