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  1. Yangon University of Education
  2. Department of Physics

Fabrication of Tco-Less Dye-Sensitized Solar Cells

http://hdl.handle.net/20.500.12678/0000005248
02936588-5c91-4aac-ab88-692daee91ed9
eed933ec-9de1-4e0f-b5f1-fcc57804323b
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FABRICATION FABRICATION OF TCO-LESS.pdf (3.5 Mb)
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Publication type Dissertation
Upload type Publication
Title
Fabrication of Tco-Less Dye-Sensitized Solar Cells
en
Publication date 2014-05-06
Authors
Ohnmar Soe
Description
The technology of the dye-sensitized solar cells (DSSCs) was studied
theoretically. It was found that using two transparent conductive oxide layer
(TCO) in both electrodes of DSSCs takes more costs. The nanoporous fluorine
doped tin oxide, F: SnO2 powder has been prepared for the fabrication of low
cost DSSCs. In this research, all DSSCs have been fabricated without
commercial TCO glasses. The carbon enrich counter electrodes have been used
for donation and acceptance of electrons for oxidized dye molecules and
reduced electrolyte ions. To enhance the current collection, FTO electrodes
have been made and applied in DSSCs‘ fabrication. X-ray diffraction analysis
confirmed the prepared (F: SnO2) nanocrystallite powder has single phase of
tetragonal rutile structure. Scanning electron microscopy (SEM) shows porous
structure of (F: SnO2) powder for dye adsorption. The sol–gel combustion
method offers a simple and effective route for the synthesis of nanoporous
F:SnO2 materials. The working electrodes of DSSCs have been prepared by
fluorine doped tin oxide powder. The various counter electrodes have been used
to study the working principles and to measure current-voltage characteristic of
TCO-less DSSCs. The fill factor (FF) and efficiency (η) of these cells have also
been calculated from I-V characteristic curve of fabricated DSSCs. F :SnO2
based TCO-less DSSCs sample without metal mesh has η of about 0.03% with
FF of 0.44, open circuit voltage (Voc) of 0.56 V and short circuit current (Isc) of
0.11 mA and that of with metal mesh has η of 0.1092% ,FF of 0.48, Voc of
0.56 V and Isc of 0.38 mA.
Thesis/dissertations
University of Yangon
Pho Kaung
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