Conjugated anthracene derivatives as donor materials for bulk heterojunction solar cells: olefinic versus acetylenic spacers

Marrocchi, Assunta; Silvestri, Fabio; Seri, Mirko; Facchetti, Antonio; Taticchi, A.; Marks, Tobin J.

doi:10.1039/b820829h

Cited by 100 publications

(85 citation statements)

References 26 publications

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“…In 2009, Marrocchi et al [84] reported a series of anthracene-based derivatives 26a-d. It was found that the replacement of the acetylenic for the olefinic as the π-bridge leads to a considerable increases in PV performance.…”

Section: π-Linkage With Alkynementioning

confidence: 99%

π-Linkage effect of push-pull-structure organic small molecules for photovoltaic application

Yin

2016

Sci. China Mater.

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Much attention has been paid to the push-pullstructure organic small molecule (OSM) materials for photovoltaic (PV) application in the past decade, due to their facile reduction of energy band gap (Eg) and effective control of PV properties. π-bridge plays an important role in the push-pull-structure OSMs since an appropriate π-linkage is crucial for improving the PV performance of organic solar cells (OSCs). In this review, various π-bridge groups (thiophene, alkene, alkyne, arene and heterocycle) and the pertinent π-linkage effect will be systematically summarized. These results suggest that the in-depth study of the π-linkage effect is essential to deeply understanding the relationship between the molecular structure and property, thus improving PV performance.

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Section: π-Linkage With Alkynementioning

confidence: 99%

π-Linkage effect of push-pull-structure organic small molecules for photovoltaic application

Yin

2016

Sci. China Mater.

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“…More recently, anthracene derivatives have been used as donor materials for bulk heterojunction solar cells. [29] Kamat reported the sensitization of anthracene-9-carboxylic acid (9-AC) to sensitize a diluted (0.05 to 2 mm) acetonitrile colloidal suspension of TiO 2 nanoparticles 30 nm in diameter, using the injected electron to reduce oxazine 725 (N,N,N',N'-tetraethyloxonine) in a stepwise electron transfer process ( Figures 5 and 6). [30] The negative oxidation potential of the excited singlet state of 9-AC (9-AC*(S 1 ) % À1.8 V vs. NHE) compared to the conduction band of the semiconductor provided favorable energetics for the sensitization, and the COOH group was used to anchor the molecule to the surface of the semiconductor.…”

Section: The Anchoring Groups and Linkersmentioning

confidence: 99%

Organic Polyaromatic Hydrocarbons as Sensitizing Model Dyes for Semiconductor Nanoparticles

Zhang

Galoppini

2010

ChemSusChem

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The study of interfacial charge-transfer processes (sensitization) of a dye bound to large-bandgap nanostructured metal oxide semiconductors, including TiO(2), ZnO, and SnO(2), is continuing to attract interest in various areas of renewable energy, especially for the development of dye-sensitized solar cells (DSSCs). The scope of this Review is to describe how selected model sensitizers prepared from organic polyaromatic hydrocarbons have been used over the past 15 years to elucidate, through a variety of techniques, fundamental aspects of heterogeneous charge transfer at the surface of a semiconductor. This Review does not focus on the most recent or efficient dyes, but rather on how model dyes prepared from aromatic hydrocarbons have been used, over time, in key fundamental studies of heterogeneous charge transfer. In particular, we describe model chromophores prepared from anthracene, pyrene, perylene, and azulene. As the level of complexity of the model dye-bridge-anchor group compounds has increased, the understanding of some aspects of very complex charge transfer events has improved. The knowledge acquired from the study of the described model dyes is of importance not only for DSSC development but also to other fields of science for which electronic processes at the molecule/semiconductor interface are relevant.

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“…Among rigid fused aromatic entities, anthracene has been widely used in opto-electronic materials such as organic thin film transistors [22][23][24], organic light-emiting diodes [25][26][27][28][29][30] and bulk heterojunction solar cells [31]. Recently, a few anthracene-based derivatives have been reported as sensitizers for DSSCs [32][33][34].…”

Section: Open Accessmentioning

confidence: 99%

Novel Organic Sensitizers Containing 2,6-Difunctionalized Anthracene Unit for Dye Sensitized Solar Cells

et al. 2012

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A series of new organic dyes comprising different amines as electron donors, 2-(6-substituted-anthracen-2-yl)-thiophene as the π-conjugated bridge, and cyanoacrylic acid group as an electron acceptor and anchoring group, have been synthesized. There exists charge transfer transition from arylamine and anthracene to the acceptor in these compounds, as evidenced from the photophysical measurements and the computational results. Under one sun (AM 1.5) illumination, dye-sensitized solar cells (DSSCs) using these dyes as the sensitizers exhibited efficiencies ranging from 1.62% to 2.88%, surpassing that using 9,10-difunctionalized anthracene-based sensitizer.

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Conjugated anthracene derivatives as donor materials for bulk heterojunction solar cells: olefinic versus acetylenic spacers

Abstract: Substituting olefinic for acetylenic pi-spacers in anthracene-based conjugated semiconductor donors leads to appreciable increases in the power conversion efficiencies of the resulting bulk heterojunction solar cells.

Cited by 100 publications

References 26 publications

π-Linkage effect of push-pull-structure organic small molecules for photovoltaic application

π-Linkage effect of push-pull-structure organic small molecules for photovoltaic application

Organic Polyaromatic Hydrocarbons as Sensitizing Model Dyes for Semiconductor Nanoparticles

Novel Organic Sensitizers Containing 2,6-Difunctionalized Anthracene Unit for Dye Sensitized Solar Cells

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