We have analysed and optimised a laser process for the sintering of the TiO2 layers in dye solar cells (DSCs). Through a thermographic characterisation of the process, we show that it is possible to scale and process large areas uniformly (16 cm2). We fabricated DSCs with nanocrystalline (nc)-TiO2 films sintered by using pulsed ultraviolet laser with an average output power P varying from 1W to 7W whilst mainting a constant power conversion efficiency . The highest efficiency reached for a laser sintered DSC was 7%. The time required to sinter 1m2 of nc-TiO2 film was found to decrease hyperbolically with P, which is important for determining process takt times. We quantified the embodied energy (EE) required to sinter 1m2 of the active TiO2 layer for a variety of different processes, and found that the EE for the laser sintering process with a systemwall plug efficiency of 3.5% to be competitive with the more conventional oven and belt furnace treatments. We outline the main features required from a laser system to carry out an efficient, energetically favourable and industrially applicable automated process with competitive throughput.

Mincuzzi, G., Schulz Ruhtenberg, M., Vesce, L., Reale, A., DI CARLO, A., Gillner, A., et al. (2012). Laser processing of TiO2 films for dye solar cells: a thermal, sintering, throughput and embodied energy investigation. PROGRESS IN PHOTOVOLTAICS, -- [10.1002/pip.2261].

Laser processing of TiO2 films for dye solar cells: a thermal, sintering, throughput and embodied energy investigation

Vesce, L;REALE, ANDREA;DI CARLO, ALDO;BROWN, THOMAS MEREDITH
2012

Abstract

We have analysed and optimised a laser process for the sintering of the TiO2 layers in dye solar cells (DSCs). Through a thermographic characterisation of the process, we show that it is possible to scale and process large areas uniformly (16 cm2). We fabricated DSCs with nanocrystalline (nc)-TiO2 films sintered by using pulsed ultraviolet laser with an average output power P varying from 1W to 7W whilst mainting a constant power conversion efficiency . The highest efficiency reached for a laser sintered DSC was 7%. The time required to sinter 1m2 of nc-TiO2 film was found to decrease hyperbolically with P, which is important for determining process takt times. We quantified the embodied energy (EE) required to sinter 1m2 of the active TiO2 layer for a variety of different processes, and found that the EE for the laser sintering process with a systemwall plug efficiency of 3.5% to be competitive with the more conventional oven and belt furnace treatments. We outline the main features required from a laser system to carry out an efficient, energetically favourable and industrially applicable automated process with competitive throughput.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-INF/01 - Elettronica
English
Con Impact Factor ISI
Mincuzzi, G., Schulz Ruhtenberg, M., Vesce, L., Reale, A., DI CARLO, A., Gillner, A., et al. (2012). Laser processing of TiO2 films for dye solar cells: a thermal, sintering, throughput and embodied energy investigation. PROGRESS IN PHOTOVOLTAICS, -- [10.1002/pip.2261].
Mincuzzi, G; Schulz Ruhtenberg, M; Vesce, L; Reale, A; DI CARLO, A; Gillner, A; Brown, Tm
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/140425
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