Impact of photocatalysis on carotenoic acid dye-sensitized solar cells

Jöhr, Res; Zając, Łukasz; Günzburger, Gino; Hug, Hubert; Such, Bartosz; Szymoński, Marek; Meyer, Ernst; Glatzel, Thilo

doi:10.1515/hyma-2015-0003

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…Both are crucial for molecular electronics, catalysis, and photovoltaics. [4][5][6][7][8][9] The properties of the molecule and their interaction with the surface can be tuned with functional chemical groups. Especially important are the so-called anchoring groups that show a strong adsorption to the substrate and are used for the immobilization of molecules on surfaces, which is essential for stable interfaces.…”

Section: Introductionmentioning

confidence: 99%

Thermally induced anchoring of a zinc-carboxyphenylporphyrin on rutile TiO2 (110)

Jöhr

Hinaut

Pawlak

et al. 2017

The Journal of Chemical Physics

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Functionalization of surfaces has become of high interest for a wealth of applications such as sensors, hybrid photovoltaics, catalysis, and molecular electronics. Thereby molecule-surface interactions are of crucial importance for the understanding of interface properties. An especially relevant point is the anchoring of molecules to surfaces. In this work, we analyze this process for a zinc-porphyrin equipped with carboxylic acid anchoring groups on rutile TiO2 (110) using scanning probe microscopy. After evaporation, the porphyrins are not covalently bound to the surface. Upon annealing, the carboxylic acid anchors undergo deprotonation and bind to surface titanium atoms. The formation of covalent bonds is evident from the changed stability of the molecule on the surface as well as the adsorption configuration. Annealed porphyrins are rotated by 45° and adopt another adsorption site. The influence of binding on electronic coupling with the surface is investigated using photoelectron spectroscopy. The observed shifts of Zn 2p and N 1s levels to higher binding energies indicate charging of the porphyrin core, which is accompanied by a deformation of the macrocycle due to a strong interaction with the surface.

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Section: Introductionmentioning

confidence: 99%

Thermally induced anchoring of a zinc-carboxyphenylporphyrin on rutile TiO2 (110)

Jöhr

Hinaut

Pawlak

et al. 2017

The Journal of Chemical Physics

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“…However, among them, titanium dioxide seems to be favoured. Indeed, since O’Regan and Grätzel published their seminal paper [2], the interest surrounding dye-sensitized solar cells (DSSC) utilizing titania as a semiconducting electrode has consistently increased [3–12]. In the following paper, we review some of the recent research of molecular assemblies on rutile titania surfaces as it pertains to dye-sensitized solar cell applications.…”

Section: Introductionmentioning

confidence: 99%

Scanning probe microscopy studies on the adsorption of selected molecular dyes on titania

Prauzner‐Bechcicki¹,

Zając²,

Olszowski³

et al. 2016

Beilstein J. Nanotechnol.

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Titanium dioxide, or titania, sensitized with organic dyes is a very attractive platform for photovoltaic applications. In this context, the knowledge of properties of the titania–sensitizer junction is essential for designing efficient devices. Consequently, studies on the adsorption of organic dyes on titania surfaces and on the influence of the adsorption geometry on the energy level alignment between the substrate and an organic adsorbate are necessary. The method of choice for investigating the local environment of a single dye molecule is high-resolution scanning probe microscopy. Microscopic results combined with the outcome of common spectroscopic methods provide a better understanding of the mechanism taking place at the titania–sensitizer interface. In the following paper, we review the recent scanning probe microscopic research of a certain group of molecular assemblies on rutile titania surfaces as it pertains to dye-sensitized solar cell applications. We focus on experiments on adsorption of three types of prototypical dye molecules, i.e., perylene-3,4,9,10-tetracarboxylic dianhydride (PTCDA), phtalocyanines and porphyrins. Two interesting heteromolecular systems comprising molecules that are aligned with the given review are discussed as well.

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Impact of photocatalysis on carotenoic acid dye-sensitized solar cells

Cited by 2 publications

References 23 publications

Thermally induced anchoring of a zinc-carboxyphenylporphyrin on rutile TiO2 (110)

Thermally induced anchoring of a zinc-carboxyphenylporphyrin on rutile TiO2 (110)

Scanning probe microscopy studies on the adsorption of selected molecular dyes on titania

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