Production and development of flexible dye sensitized solar cells /

Date

2014

Author

Kocaoğlu, Bahadır Can

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Electrophoretic Deposition (EPD) of titania nanoparticles (P-25 Degusa) have been utilized in order to form the nanoporous photoanodes of dye-sensitized solar cells (DSSCs) on flexible polymeric (PEN) substrates. Highly uniform, adherent nanoporous thick films were produced by uniformly dispersing the titania nanoparticles in alcohol based solutions without any binders. Solution performances of each type of alcohols and mixtures of which have been examined considering their coating thickness, morphology and selective anatase deposition yield. Additionally, the effects of acetylacetone addition in solutions on zeta potential and effective particle size of the colloids were investigated. EPD process has been conducted in a single step while the uniformity of the morphology and the thickness of the films were maintained preventing the damage on ITO (Indium Tin Oxide) layer due to excessive voltage exposure. Subsequently, the mechanical compression is applied via cold isostatic pressing (CIP) with a clamping-effect pressure profile in order to obtain 14 - 15 µm film thickness and photon to current conversion efficiency of 4.22 % under AM 1.5 conditions.

Subject Keywords

Solar cells., Dye-sensitized solar cells., Electrophoretic deposition., Nanoparticles.

URI

http://etd.lib.metu.edu.tr/upload/12617666/index.pdf
https://hdl.handle.net/11511/23834

Collections

Graduate School of Natural and Applied Sciences, Thesis