Simple Metal-Free Dyes Derived from Triphenylamine for DSSC: A Comparative Study of Two Different Anchoring Group

Narayanaswamy, Krithika; Swetha, T.; Kapil, Gaurav; Pandey, Shyam S.; Singh, Surya Prakash

doi:10.1016/j.electacta.2015.04.071

Cited by 32 publications

(11 citation statements)

References 48 publications

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“…The determined IPs were only slightly varied, probably due to weak conjugation of the triphenylamine group with the other parts of the molecules, as shown by the theoretical calculations. Very close values have been reported for similar triphenylamine-based dyes [31][32][33][34][35]. It is noteworthy that the experimental values correlate very well with the theoretically calculated ones.…”

Section: Electrochemistrysupporting

confidence: 84%

2-Thiohydantoin Moiety as a Novel Acceptor/Anchoring Group of Photosensitizers for Dye-Sensitized Solar Cells

et al. 2020

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Very recently, we have reported the synthesis and evaluation of biological properties of new merocyanine dyes composed of triphenylamine moiety, π-aromatic spacer, and rhodanine/2-thiohydantoin-based moiety. Interestingly, 2-thiohydantoin has never been studied before as an electron-accepting/anchoring group for the dye-sensitized solar cells (DSSCs). In the presented study, we examined the applicability of 2-thiohydantoin, an analog of rhodanine, in DSSC technology. The research included theoretical calculations, electrochemical measurements, optical characterization, and tests of the solar cells. As a result, we proved that 2-thiohydantoin might be considered as an acceptor/anchoring group since all the compounds examined in this study were active. The most efficient device showed power conversion efficiency of 2.59%, which is a promising value for molecules of such a simple structure. It was found that the cells’ performances were mainly attributed to the dye loading and the ICT molecular absorption coefficients, both affected by the differences in the chemical structure of the dyes. Moreover, the effect of the aromatic spacer size and the introduction of carboxymethyl co-anchoring group on photovoltaic properties was observed and discussed.

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Section: Electrochemistrysupporting

confidence: 84%

2-Thiohydantoin Moiety as a Novel Acceptor/Anchoring Group of Photosensitizers for Dye-Sensitized Solar Cells

et al. 2020

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“…Energy of the conduction band or LUMO was estimated from the relation LUMO = HOMO + E g and calculated to be −3.69 and −3.08 eV, respectively, utilizing the respective E g obtained from the Tauc plot. This has helped us to construct the energy band diagram of the lanthanum complexes under investigation along with the well-known wide band gap semiconductor TiO 2 which has been shown in Figure 7(b) [74]. A perusal of this figure clearly indicates that lanthanum complexes such as La-PyH and La-PyH-dtc form energetic cascade and matching TiO 2 and can be used as a sensitizer for this.…”

Section: Opto-electronic Characterizationmentioning

confidence: 98%

Synthesis, characterizations and photo-physical properties of novel lanthanum(III) complexes

Ameen

Tripathi

Siddiqui

et al. 2018

Journal of Taibah University for Science

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A series of novel complexes of La(III) with substituted pyrazolines and mixed ligand complexes with these pyrazolines and thio-ligands have been synthesized and characterized by elemental analysis, molecular weight measurement, Fourier transform infra-red, 1 H and 13 C NMR spectroscopy. The particle/crystallite sizes were confirmed by powder X-ray diffraction, scanning electron microscopy and transmission electron microscopic techniques. Optical characterizations have been performed by electronic absorption and fluorescence emission spectroscopies in order to investigate their luminescence behaviour, which reveals fairly good quantum yield and fluorescence life time for some of the complexes. Thermal analyses such as thermogravimetric and differential thermal analysis indicate that these complexes are thermally stable at high temperature. Investigations pertaining to solid-state optical absorption spectra and photoelectron yield spectroscopy reveal that upon thermal annealing beyond 300°C, these compounds form dark-brown to black semiconducting materials with an optical band gap between 1.9 and 2.3 eV. Abbreviations: La-PyH : La-HPY = [La(C 15 H 12 N 2 OH) 2 (H 2 O)Cl]; La-PyH-dtc = [La(C 15 H 12 N 2 OH)(C 5 H 10 NS 2)(2H 2 O)Cl]; La-OCPy-xan: [La(C 15 H 12 N 2 OOCH 3)(C 2 H 5 OCS 2)(2H 2 O)Cl] ARTICLE HISTORY

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“…In 2017, Liu et al reported that the light‐harvesting ability could be greatly enhanced by samarium (Sm 3+ ) doping due to the down‐conversion luminescence effect of Sm 3+ ions. This article also reported that power conversion efficiency and photovoltaic performance were enhanced in Sm 3+ ‐doped TiO 2 photoanodes as compared to pristine TiO 2 photoanodes Liu et al studied the effect of RE, Sm 3+ , doping on TiO 2 photoanodes in DSSCs.…”

Section: Re‐doped Tio2 For Spectral Conversionmentioning

confidence: 89%

A review on spectral converting nanomaterials as a photoanode layer in dye‐sensitized solar cells with implementation in energy storage devices

et al. 2020

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The present review article aims at the application of rare-earth-based titanium dioxide nanocrystals as spectral converters in photovoltaic devices, with special focus on dye-sensitized solar cells (DSSCs). Additionally, the implementation of DSSCs in energy storage, more importantly, DSSCs and lithium-ion batteries (LIB) integrated devices are systematically described. The absorption in DSSCs is mainly confined to the visible solar spectrum, which is one of the main reasons behind its limited power conversion efficiency. This has led to shifting of research focus on broadening the light absorption range of DSSCs, which can further lead to enhancement in overall power conversion efficiency. TiO 2 , doped with rare-earth (RE) ions, is often used as an electron transport layer (ETL) in DSSCs to overcome this absorption-related issue. This article gives a detailed review of TiO 2 doped with different RE ions, as an electron transport layer in DSSCs. More importantly, we have summarized all the recent important findings with the application of DSSCs in LIB and photocapacitors. K E Y W O R D S DSSCs, efficiency, electron transport layer, energy storage, photovoltaics, rare-earth 1 | OBJECTIVES • The main objective of this review article is to provide an overview of TiO 2 -based photoanode layer used in dye-sensitized solar cells (DSSCs).

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Simple Metal-Free Dyes Derived from Triphenylamine for DSSC: A Comparative Study of Two Different Anchoring Group

Cited by 32 publications

References 48 publications

2-Thiohydantoin Moiety as a Novel Acceptor/Anchoring Group of Photosensitizers for Dye-Sensitized Solar Cells

2-Thiohydantoin Moiety as a Novel Acceptor/Anchoring Group of Photosensitizers for Dye-Sensitized Solar Cells

Synthesis, characterizations and photo-physical properties of novel lanthanum(III) complexes

A review on spectral converting nanomaterials as a photoanode layer in dye‐sensitized solar cells with implementation in energy storage devices

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