Production and development of flexible dye sensitized solar cells /

Download

index.pdf

Date

2014

Author

Kocaoğlu, Bahadır Can

Metadata

Show full item record

Item Usage Stats

204
views

94
downloads

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

Suggestions

OpenMETU
Core

Production of flexible polymeric photoanodes using binder-free electrophoretic deposition and compression for dye-sensitized solar cells Kocaoglu, Bahadir Can; Özenbaş, Ahmet Macit (2015-04-29) Electrophoretic deposition (EPD) of titania nanoparticles have been utilized in order to form the nanoporous photoanodes of dye-sensitized solar cells (DSSCs) on flexible polymeric (PEN/PET) substrates. Highly uniform, adherent nanoporous thick films were produced by uniformly dispersing the titania nanoparticles in alcoholic suspensions without any binders. Suspension performances of each type of isopropanol based mixtures have been examined. Additionally, the effect of acetylacetone addition in suspension...
Optimization of Selective Electrophoretic Deposition and Isostatic Compression of Titania Nanoparticles for Flexible Dye-Sensitized Solar Cells Kocaoglu, Bahadir Can; Icli, Kerem Cagatay; Özenbaş, Ahmet Macit (2016-04-01) Flexible photoanodes on PEN/PET based substrates for dye-sensitized solar cells (DSSC) by using electrophoretic deposition (EPD) method for the formation of titania nanoporous layer with titania nanoparticles (P-25) were produced. Considering commercially available titania nanoparticles containing both anatase and rutile phases, the undesired rutile nanoparticles, for DSSC applications, were almost eliminated from the coatings by selective pH adjustment of the EPD solutions without any binders. The coating ...
Design of high-efficiency dye-sensitized nanocrystalline solar cells Yavuz, Halil İbrahim; Özenbaş, Ahmet Macit; Erçelebi, Ayşe Çiğdem; Department of Metallurgical and Materials Engineering (2014) Nanocrystalline dye sensitized solar cells (DSSC) technology continues to develop as a better alternative to the silicon based solar cells, which are commercialized. This study aims at finding low cost and highly efficient DSSC design and production methods via examination of effects of both photoanode structure and photon-electron generation mechanism on photoanode layers. This will contribute to the commercialization of DSSC technology. Photoanode structure is examined in four groups; transparent conducti...
Development of hole transport transparent conductive electrodes for n-type crystalline silicon solar cells Akdemir, Ozan; Bek, Alpan; İmer, Muhsine Bilge; Department of Micro and Nanotechnology (2018) Conventional transparent conductive electrodes (TCEs) used in crystal silicon (c-Si) solar cells are commonly made of indium tin oxide (ITO) which provides low sheet resistance and high transparency. However, due to indium scarcity, ITO layers increase the fabrication cost; thus, alternative TCEs, such as fluorine-doped tin oxide (FTO), zinc oxide (ZnO), metal nanowires and Oxide/Metal/Oxide (OMO) multilayers, are being investigated. Conventional solar cells also make use of doped layers, to create the junc...
Surface modification of multi-crystalline silicon in photovoltaic cell by laser texturing Radfar, Behrad; Turan, Raşit; Yerci, Selçuk; Department of Micro and Nanotechnology (2019) Surface of crystalline silicon solar cell plays an important role in its performance. It affects the optical properties which can be determined by surface’ reflectance. To minimize the reflection from the flat surface, thus, improve light trapping, the crystalline silicon wafers must be textured. Through the texturing process, roughness is introduced at the surface, so the incident light has a larger probability of being absorbed into the solar cell. Monocrystalline silicon solar cells can typically be text...

Citation Formats

B. C. Kocaoğlu, “Production and development of flexible dye sensitized solar cells /,” M.S. - Master of Science, Middle East Technical University, 2014.