DSSC

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DSSC - Dye Sensitized Solar Cells

2013 This year Juice from Juice at Wildwood has been testing the amount of time needed for a plate to soak in the dye (anthocyanin) and what time gets the highest results.

Here are our measurements of the average efficiency based on time.



Here is one of our group members digital RR books that record our progress overtime.

[|RR]

Here is our first graph measuring different dyes efficiencies [|First Graph]

Here is our second graph, measuring the soakage time needed for the most efficient plate using our strongest dye so far (anthocyanin) [|Second Graph]

2012 Current data from Wildwood on different cell types and their efficiencies: [|DATA] Analyzed data: 2012 Conference posters:

Pigments tested:


 * Pigment spectrum || Photo ||
 * [|Chlorophyll a] || [[image:Chlorophyll.jpg width="400" height="300"]] ||
 * [|Chlorophyll b] || [[image:Chlorophyll.jpg width="400" height="300"]] ||
 * [|Xanthophyll] || [[image:IMAG0086.jpg width="240" height="399"]] ||
 * [|Anthocyanin] || [[image:http://img.21food.com/20110609/product/1307109248614.jpg width="233" height="171"]] ||
 * [|Beta-carotene] || [[image:IMAG0085.jpg width="240" height="399"]] ||

Our attempt at a giant Xanthophyll DSSC (Roughly 100 square centimeters):



There does seem to be a slight positive correlation between peak absorption wavelength and efficiency, as well as a negative relationship between molar absorption coefficient and efficiency. However, as the layers of TiO2 increases, the relationship starts to fall apart and the peak absorption spectrum and the molar absorption coefficient becomes less important.

=References= Beta-carotene: absortion spectrum and molar coefitent http://omlc.ogi.edu/spectra/PhotochemCAD/html/041.html chlorophyll a: absortion spectrum and molar coefitent http://omlc.ogi.edu/spectra/PhotochemCAD/html/123.html chlorophyll b: absortion spectrum and molar coefitent http://omlc.ogi.edu/spectra/PhotochemCAD/html/125.html anthocyanin: molar coefitent http://employees.csbsju.edu/SSAUPE/biol327/Lab/photosyn/chlorophyll_quant.htm anthocyanin: absortion spectrum http://cellbiologyolm.stevegallik.org/anthocyanin/page17 xanthophyll: absortion spectrum and molar coefitent http://www.ocemwo.strony.univ.gda.pl/literatura/Xanthophylls%20Phytoplankton%20pigments.pdf