Fabrication of macroporous photoelectrodes by colloidal templating methods

Title
Fabrication of macroporous photoelectrodes by colloidal templating methods
Authors
이현정김민아
Issue Date
2009-08
Publisher
한일 태양전지 심포지움
Abstract
Dye-sensitized solar cells based on highly porous nanocrystalline TiO2 films have drawn much attention due to their high conversion efficiency and low production cost. TiO2 nanocrystalline particles have been investigated extensively as a key material. In this study, we present a new strategy to fabricate macroporous photoelectrodes using polystyrene(PS) colloidal templating methods both at high temperature (>400oC) and at low temperature (150oC>). Polymeric colloidal structures could be removed by thermal sintering or chemical treatment. This mesoporous structure provides the large empty space leading to the easy infiltration of quasi-solid state electrolytes and has additional light harvesting effect. A major advantage of this colloidal array template method is that the pore size and its distribution within TiO2 photoelectrodes are determined by those of latex beads, which can be controlled easily. These materials may have promising potentials for future applications of membrane, sensor and so on as well as solar cells.
URI
http://pubs.kist.re.kr/handle/201004/35766
Appears in Collections:
KIST Publication > Conference Paper
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