Flexible Dye-sensitized Solar Cell Using Titanium Gel at Low Temperature

hwan, Ji seung; Park, Hyunsu; Kim, Doyeon; Hyung, Han Do; YunHyeWon,; Kim, Woo Byoung

doi:10.3740/mrsk.2019.29.3.183

Cited by 5 publications

(1 citation statement)

References 23 publications

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“…Ji et al, e.g., report on adding a TiO 2 gel to a TiO 2 nanoparticle paste, only enabling sintering at 150 • C and resulting in an increase from 0.02% for the pure TiO 2 nanoparticle paste to 2.76% with additional TiO 2 gel [11]. Holliman et al used colloidal TiO 2 films to reduce the sintering temperature to 120 • C [12].…”

Section: Introductionmentioning

confidence: 99%

Electrospun Nanofiber Mats with Embedded Non-Sintered TiO2 for Dye-Sensitized Solar Cells (DSSCs)

Mamun

Trabelsi

Klöcker

et al. 2019

Fibers

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TiO2 is a semiconductor that is commonly used in dye-sensitized solar cells (DSSCs). However, the necessity of sintering the TiO2 layer is usually problematic due to the desired temperatures of typically 500 °C in cells that are prepared on polymeric or textile electrodes. This is why textile-based DSSCs often use metal fibers or metallic woven fabrics as front electrodes on which the TiO2 is coated. Alternatively, several research groups investigate the possibilities to reduce the necessary sintering temperatures by chemical or other pre-treatments of the TiO2. Here, we report on a simple method to avoid the sintering step by using a nanofiber mat as a matrix embedding TiO2 nanoparticles. The TiO2 layer can be dyed with natural dyes, resulting in a similar bathochromic shift of the UV/Vis spectrum, as it is known from sintered TiO2 on glass substrates, which indicates an equivalent chemical bonding. Our results indicate a new possibility for producing textile-based DSSCs with TiO2, even on textile fabrics that are not high-temperature resistant.

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Section: Introductionmentioning

confidence: 99%