Desirable properties of photovoltaic dyes

Piechowski, A. P.; Bird, George R.; Morel, D.L.; Stogryn, E. L.

doi:10.1021/j150649a020

Cited by 105 publications

(40 citation statements)

References 4 publications

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“…0.02 %. [6,86] More recently Pagani and Marks extensively employed the hydrazone end capped squaraines 79 and 80 in the preparation of performing OPV devices [87] Scheme 25. The use of linear and branched alkyl chain substituents allows managing the solubility and at the same time offers a tool for the control of the solid state organization, a key feature in the BHJ-OPV technology.…”

Section: Photoconduction Related Squaraines Applicationsmentioning

confidence: 99%

“…Depending on the starting reagents it is possible to access a myriad of compounds with multivariate material functions, along with remarkable stability and wide substitution patterns imparting the required solubility. All of these favourable features promote their exploitation in a number of technologically relevant applications including photoconductivity [3] data storage, [4] light emitting field-effect transistors, [5] solar cells [6][7][8] and nonlinear optics. [9] Recently, it has been shown that squaraines can also behave as very efficient two-photon absorbers, [10] fluorescent histological probes, [11] highly stable fluorescent near-IR dyes, [12,13] active media for fluorescence patterning [14] and possibly as second-generation photosensitizers for photodynamic therapy (PDT).…”

Section: Introductionmentioning

confidence: 99%

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Squaraine Compounds: Tailored Design and Synthesis towards a Variety of Material Science Applications

2010

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The interest in squaraine compounds, a relatively old class of dyes, has been recently renewed due to their potential usefulness in a large number of technologically relevant fields such as two-photon absorbing materials, field-effect transistors, solar cells, NIR-emitting fluorescent probes and sensitizers for photodynamic therapy. Aim of the present review is to summarize the most convenient strategies for squaraines and polysquaraines syntheses and to discuss the design strategies enabling for the preparation of squaraines having properties relevant for a given material application. In particular, in the first section of the review we will describe the various synthetic approaches for the preparation of squaraine and polysquaraine derivatives. The second section will

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Section: Photoconduction Related Squaraines Applicationsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Squaraine Compounds: Tailored Design and Synthesis towards a Variety of Material Science Applications

2010

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“…[1][2][3][4][5][6][7] In molecular design of luminescent materials, it is important to better understand the luminescent mechanism of multicolor fluorescent spectra of polyatomic molecules. [8][9][10][11][12][13] For several decades, squaraine dyes have been found to be important applications in xerographic photoreceptors, 14 organic solar cells, 15 fluorescent probes, 16 chemical sensors, 17 molecular devices, 18 and photo-sensitizers. 19 As reviewed by Law,20 the wide practical applications of various squaraine dyes are attributed to their unique photophysical behaviors.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Study of Origin of Triple Fluorescences of a Squaraine Dye, Bis[4‐(N,N‐dimethylamino)phenyl]squaraine

Mang¹,

Zhou²,

Liu³

et al. 2009

Chin. J. Chem.

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A new scheme of photo-fluorescent emission origin, described as S 0 (relaxed state)→S n (Frank-Condon state)→ S m (relaxed state)→S 0 (Frank-Condon state), is presented to explain the multiple fluorescent emissions of squaraine dyes observed experimentally according to the configuration interaction singles calculations of relaxed excited states of a model compound, bis[4-(N,N-dimethylamino)phenyl]squaraine (SQ). It is exhibited that all triple fluorescent emissions of SQ have their significant origin in vertical electron transitions of different relaxed excited states. In addition, some important absorption peaks appearing in higher energy region are most likely to be responsible for the higher energy band observed in solid states of many squaraine dyes.

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“…Since this review was majorly designed under educational aspects, it appears very worthwhile to review this period in more detail. Results from other organic solar cells like dye-sensitised liquid electrolyte [5] or solid-state polymer electrolyte cells [6], pure dye cells [7,8] or small-molecule cells [9], mostly based on heterojunctions between phatolcyanines and fullerenes or perylenes [10] will not be discussed.…”

mentioning

confidence: 99%