Constructing a Dye Sensitized Solar Cell

This video provides a step-by-step set of instructions for making a dye-sensitized solar cell using fruit juice, followed by testing.

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  1. #1 by jibbs001 at October 9th, 2009

    wow this video is so good, thanks guys, but as i did with the other video you had uploaded before , i have the same question here too, please ,the titaniun doixide layer won’t stick to the glas when i heat it up , can you help me please, it is a heatproblem or do i have a too think layer?

  2. #2 by nabrams1 at October 13th, 2009

    If the TiO2 is not sticking when heated, it is most likely due to the paste being too thick. If it flakes BEFORE being heated (but after drying) it is due to the paste being too thin.

  3. #3 by jibbs001 at October 14th, 2009

    thanks for anwering my question, but what’s the temp. i have to heat with so that it sticks ? is it about 500 celcius

  4. #4 by nabrams1 at October 14th, 2009

    Generally, annealing at 400-450 degrees C will suffice.

  5. #5 by jibbs001 at October 14th, 2009

    okej thanks for helping

  6. #6 by 04aurora04 at October 14th, 2009

    What would you estimate the $ / Watt to be with this type of cell? Also, will this same method / procedure work with larger pieces of conductive glass (1-2 feet square vs 1 inch square)?

  7. #7 by nabrams1 at November 3rd, 2009

    I do not see any errors with this portion. Please elaborate.

  8. #8 by nabrams1 at November 11th, 2009

    The resistance on the wrong side should be infinite meaning there is an infinitely high resistance to electron flow. If the ITO glass is high quality, there is no contact resistance, or the multimeter is not very precise, than you will observe 0 Ohms rather than 20-30.

  9. #9 by SuperMosquitoz at January 5th, 2010

    Excuse me, but I tempt to reproduce this experience, but which acide is use to prepare the TiO2?
    (at 0:55 to 1:30)
    Thanks 🙂

  10. #10 by UCISustainableEnergy at January 6th, 2010

    I was able to build one of these but the cell dried out and turned white over time. Any suggestion as to how I could fix this? Thanks.

  11. #11 by nabrams1 at January 6th, 2010

    I would not expect the cell to dry out since the redox electrolyte is made using ethylene glycol. Instead, I would think the anthocyanin dyes oxidized, turning the cell a brownish color. If it turned completely white, either the redox electrolyte was not correct or the cell was exposed to a large amount of heat and UV light.

  12. #12 by trythedonuts at January 16th, 2010

    Would there be any difference in the TiO2 deposition step if conducting PET (ITO-doped) were used instead of a conducting glass slide?

  13. #13 by nabrams1 at January 19th, 2010

    The same TiO2 film application would not work since the TiO2 needs to be annealed at 400C. The PET would not survive.

  14. #14 by nabrams1 at January 20th, 2010

    Dilute nitric or acetic. pH 3-4 should be adequate.

  15. #15 by smusmani at February 24th, 2010

    Thanks for the video Prof. Abrams. Do you know the recipe to make the iodide solution? Also where should I buy the Titania powder? Thanks.

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