near infrared radiation as a rapid heating technique for tio2 films on glass mounted dye-sensitized solar cells
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ID: 239492
2014
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Abstract
Near infrared radiation (NIR) has been used to enable the sintering of TiO2 films
on fluorine-doped tin oxide (FTO) glass in 12.5 s. The 9 µm thick TiO2 films
were constructed into working electrodes for dye-sensitized solar cells (DSCs)
achieving similar photovoltaic performance to TiO2 films prepared by heating
for 30 min in a convection oven. The ability of the FTO glass to heat upon 12.5 s
exposure of NIR radiation was measured using an IR camera and demonstrated
a peak temperature of 680°C; glass without the 600 nm FTO layer reached
350°C under identical conditions. In a typical DSC heating step, a TiO2 based
paste is heated until the polymeric binder is removed leaving a mesoporous film.
The weight loss associated with this step, as measured using thermogravimetric
analysis, has been used to assess the efficacy of the FTO glass to heat sufficiently. Heat induced interparticle connectivity in the TiO2 film has also been
assessed using optoelectronic transient measurements that can identify electron
lifetime through the TiO2 film. An NIR treated device produced in 12.5 seconds
shows comparable binder removal, electron lifetime, and efficiency to a device
manufactured over 30 minutes in a conventional oven.
| Reference Key |
hooper2014internationalnear
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|---|---|
| Authors | ;Katherine Hooper;Matthew Carnie;Cecile Charbonneau;Trystan Watson |
| Journal | construction and building materials |
| Year | 2014 |
| DOI |
10.1155/2014/953623
|
| URL | |
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