Selective positioning of organic dyes in a mesoporous inorganic oxide film

Title
Selective positioning of organic dyes in a mesoporous inorganic oxide film
Authors
이경태박세웅고민재김경곤박남규
Issue Date
2009-08
Publisher
Nature materials
Citation
VOL 8, NO 8, 665-671
Abstract
Although sequential adsorption of dyes in a single TiO2 electrode is ideal to extend the range of light absorption in dye-sensitized solar cells, high-temperature processing has so far limited its application. We report a method for selective positioning of organic dye molecules with different absorption ranges in a mesoporous TiO2 film by mimicking the concept of the stationary phase and the mobile phase in column chromatography, where polystyrene-filled mesoporous TiO2 film is explored for use as a stationary phase and a Brønsted-base-containing polymer solution is developed for use as a mobile phase for selective desorption of the adsorbed dye. By controlling the desorption and adsorption depth, yellow, red and green dyes were vertically aligned within a TiO2 film, which is confirmed by an electron probe micro-analyser. The external quantum efficiency (EQE) spectrum from a solar cell with three selectively positioned dyes reveals the EQE characteristics of each single-dye cell.
URI
http://pubs.kist.re.kr/handle/201004/35700
ISSN
1476-1122
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE