Calculation of the photocurrent-potential characteristic for regenerative, sensitized semiconductor electrodes

Matthews, Dennis B.; Infelta, Pierre P.; Grätzel, Michaël

doi:10.1016/0927-0248(96)00036-0

Cited by 122 publications

(97 citation statements)

References 19 publications

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“…The free energy change for the electron injection of TH305 onto a titanium dioxide surface is larger than that of TH301. According to the Marcus theory for electron transfer, the electron injection rate in DSSCs may be faster for TH305 than for TH301 [19]. Thus, if the energy absorbed at approximately 381 nm is effectively used in the corresponding DSSCs, the electron in the LUMO + 1 will transfer into the LUMO and then be injected onto the semiconductor surface.…”

Section: Resultsmentioning

confidence: 99%

Photo-induced intramolecular charge transfer from antenna to anchor groups in phenoxazine dyes

Yang

Liu

Zhou

et al. 2011

Chemical Physics Letters

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Section: Resultsmentioning

confidence: 99%

Photo-induced intramolecular charge transfer from antenna to anchor groups in phenoxazine dyes

Yang

Liu

Zhou

et al. 2011

Chemical Physics Letters

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“…For an activationless process, the injection rate constant can be derived from the Marcus theory for electron transfer [Eq. (4)]: [37,54] …”

Section: Electron Injectionmentioning

confidence: 99%

“…Equation (4) is validated if one assumes that the electron injection is restricted to energy levels close to the semiconductor conduction band edge and that the density of acceptor states in this energy range remains constant. [54] DG inject determines the electron injection rate and therefore the photocurrent in DSSCs and it can be viewed as the electron injection driving force. A larger driving force is desirable for more rapid electron injection rate and then higher overall efficiency of DSSCs.…”

Section: Electron Injectionmentioning

confidence: 99%

Acene‐Modified Triphenylamine Dyes for Dye‐Sensitized Solar Cells: A Computational Study

2012

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A series of metal‐free acene‐modified triphenylamine dyes (benzene to pentacene, denoted as TPA‐AC1 to TPA‐AC5) are investigated as organic sensitizers for application in dye‐sensitized solar cells (DSSCs). A combination of density functional theory (DFT), density functional tight‐binding (DFTB), and time‐dependent DFT (TDDFT) approaches is employed. The effects of acene units on the spectra and electrochemical properties of the acene‐modified TPA organic dyes are demonstrated. The dye/(TiO2)46 anatase nanoparticle systems are also simulated to show the electronic structures at the interface. The results show that from TPA‐AC1 to TPA‐AC5 with increasing sizes of the acenes, the absorption and fluorescence spectra are systematically broadened and red‐shifted, but the oscillator strength and electron injection properties are reduced. The molecular orbital contributions show increasing localization on the bridging acene units from TPA‐AC1 to TPA‐AC5. From the theoretical examination of some key parameters including free enthalpy related to the electron injection, light‐harvesting efficiency, and the shift of semiconductor conduction band, TPA‐AC3 with an anthracene moiety demonstrates a balance of the above crucial factors. TPA‐AC3 is expected to be a promising dye with desirable energetic and spectroscopic parameters in the DSSC field, which is consistent with recent experimental work. This study is expected to deepen our understanding of TPA‐based organic dyes and assist the molecular design of new metal‐free dyes for the further optimization of DSSCs.

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“…Hence, the DSSCs efficiency sensitized by Ru compound, adsorbed on the semiconductor nano-crystalline TiO 2 has reached 11-12% [17,18]. The operation cycle is summarized in chemical reaction as [19]:…”

Section: Operation Of Dsscsmentioning

confidence: 99%

Review on Natural Dye-Sensitized Solar Cells (DSSCs)

Adedokun¹,

Titilope²,

Awodugba³

2016

IJET

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Abstract-In a conversion system of pure and non-convectional solar energy to electricity, dye sensitized solar cells (DSSCs) encourage the fabrication of photovoltaic devices providing high conversion efficiency at low cost. The dye as a sensitizer plays a vital role in performance evaluation of DSSCs. Natural dyes (organic dyes) has come to be a worth-while substitute to the rare and expensive inorganic sensitizers because of its cost effective, extreme availability and biodegradable. Different parts of a plant like fruits, leaves, flowers petals and bark have been tested over the years as sensitizers. The properties, together with some other parameters of these pigments give rise to improve in the operation standard of DSSCs. This review hash-out the history of DSSC with a focus on the recent developments of the natural dyes applications in this specific area with their overall appearance, the various components and the working principle of DSSCs as well as the work done over the years on natural dye based DSSCs.

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Calculation of the photocurrent-potential characteristic for regenerative, sensitized semiconductor electrodes

Cited by 122 publications

References 19 publications

Photo-induced intramolecular charge transfer from antenna to anchor groups in phenoxazine dyes

Photo-induced intramolecular charge transfer from antenna to anchor groups in phenoxazine dyes

Acene‐Modified Triphenylamine Dyes for Dye‐Sensitized Solar Cells: A Computational Study

Review on Natural Dye-Sensitized Solar Cells (DSSCs)

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