Efficient dye-sensitized solar cells with triarylamine organic dyes featuring functionalized-truxene unit

Liang, Mao; Lu, Ming; Wang, Qilin; Chen, Weiyi; Han, Hong-Yu; Sun, Zhe; Xue, Song

doi:10.1016/j.jpowsour.2010.08.055

Cited by 48 publications

(19 citation statements)

References 53 publications

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“…Due to the good electron as well as transporting capability and its special propeller starburst molecular structure with a nonplanar configuration, the triarylamine group is widely applied as a HTM in various electronic devices. Triarylamine derivative distributes the π–π stacking and, thus, improves the cells performance by reducing the charge recombination, minimizing the dye aggregation and enhancing the molar extinction coefficient of the organic dye [ 202 , 217 , 238 ]. By the addition of alkyl chains or donating groups, the structural modification of the triarylamine derivatives could be performed [ 218 , 220 , 239 ].…”

Section: Previous and Further Improvements In Dsscsmentioning

confidence: 99%

Dye-Sensitized Solar Cells: Fundamentals and Current Status

Sharma

Sharma³

2018

Nanoscale Res Lett

823

426

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Dye-sensitized solar cells (DSSCs) belong to the group of thin-film solar cells which have been under extensive research for more than two decades due to their low cost, simple preparation methodology, low toxicity and ease of production. Still, there is lot of scope for the replacement of current DSSC materials due to their high cost, less abundance, and long-term stability. The efficiency of existing DSSCs reaches up to 12%, using Ru(II) dyes by optimizing material and structural properties which is still less than the efficiency offered by first- and second-generation solar cells, i.e., other thin-film solar cells and Si-based solar cells which offer ~ 20–30% efficiency. This article provides an in-depth review on DSSC construction, operating principle, key problems (low efficiency, low scalability, and low stability), prospective efficient materials, and finally a brief insight to commercialization.

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Section: Previous and Further Improvements In Dsscsmentioning

confidence: 99%

Dye-Sensitized Solar Cells: Fundamentals and Current Status

Sharma

Sharma³

2018

Nanoscale Res Lett

823

426

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“…Truxene is an aromatic species with C 3 geometry that has many applications [1] including in solar technology [2][3][4][5][6][7][8][9][10][11] and organic light emitting diodes (OLEDs). [12][13][14][15][16][17][18] Recently,t ruxeneh as also been investigated as ab ridging unit between energy donors and acceptors both by our group and others.…”

Section: Introductionmentioning

confidence: 99%

Excited State N−H Tautomer Selectivity in the Singlet Energy Transfer of a Zinc(II)‐Porphyrin–Truxene–Corrole Assembly

Langlois

Karsenti

et al. 2017

Chemistry A European J

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An original corrole-containing polyad for S energy transfer, in which one zinc(II)-porphyrin donor is linked to two free-base corrole acceptors by a truxene linker, is reported. This polyad exhibits a rapid zinc(II)-porphyrin*→free-base corrole transfer (4.83×10 s ; 298 K), even faster than the tautomerization in the excited state processes taking advantage of the good electronic communication provided by the truxene bridge. Importantly, the energy transfer process shows approximately 3-fold selectivity for one corrole N-H tautomer over the other even at low temperature (77 K). This selectivity is due to the difference in the J-integral being effective in both the Förster and Dexter mechanisms. The data are rationalized by DFT computations.

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“…7 The metal-free organic dyes have been applied as dye sensitizers in DSSCs widely, which usually have three important parts: (1) the electron donor decides the intense of spectral absorption and the effect of anti-aggregation on the TiO2 surface, and impresses the recombination of conduction band (CB) electrons with triiodide in the electrolyte, (2) the electron acceptor such as the cyanoacrylic acid which is helpful for dye sensitizers adsorbed on TiO2 film and excited electrons injecting from dye sensitizer to the CB of TiO2, (3) the linker units for the π conjugation could enhance the absorption region and increase the molar absorption coefficient. [8][9][10] Tetrathiafulvalene (TTF) is an electro-rich compound and has been extensively investigated as electron-donating unit in charge-transfer complexes. 11,12 Because of the strong reversible electron donating ability, TTF and its derivatives were designed to form donor-acceptor (D-A) systems [13][14][15] with special photophysical properties such as intramolecular electron transfer, infrared absorption, and so on.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Investigations of Tetrathiafulvalene Derivative as Electron Donor in Organic Dye for Dye-Sensitized Solar Cells

Chen

成都

Jia

et al. 2014

Acta Physico-Chimica Sinica

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To investigate the effect of a tetrathiafulvalene (TTF) unit on the photovoltaic properties of the corresponding dye sensitizer, a TTF-carbazole-based sensitizer, Dye 2, was designed; it was based on the framework of Dye 1. The geometries, electronic structures, and optical properties of Dye 1 and Dye 2 before and after binding to (TiO2)9 clusters were investigated using density functional theory (DFT) and timedependent DFT. The surface morphologies of the dyes on TiO2 (101) surfaces were simulated by periodic DFT calculations using the DMol 3 program. The calculated results showed that the introduction of TTF units into dyes could help to inhibit dye aggregation on the TiO2 surface; this is conducive to intramolecular charge-transfer transitions and significantly improves the light-harvesting ability. The calculated results demonstrate that the TTF unit is a very promising electron donor for improving the photovoltaic properties of organic dye sensitizers.

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Efficient dye-sensitized solar cells with triarylamine organic dyes featuring functionalized-truxene unit

Cited by 48 publications

References 53 publications

Dye-Sensitized Solar Cells: Fundamentals and Current Status

Dye-Sensitized Solar Cells: Fundamentals and Current Status

Excited State N−H Tautomer Selectivity in the Singlet Energy Transfer of a Zinc(II)‐Porphyrin–Truxene–Corrole Assembly

Theoretical Investigations of Tetrathiafulvalene Derivative as Electron Donor in Organic Dye for Dye-Sensitized Solar Cells

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