A photoactive layer in photochromic glazing
| Autor: | Shankar Bogati, Urša Opara Krašovec, Mateja Hočevar, Andreas Georg |
|---|---|
| Přispěvatelé: | Publica |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Thermische Anlagen und Gebäudetechnik
Materials science nanostructured TiO2 layer electrochromic layer Solarthermie TiCl4-THF treatment photochromic device 02 engineering and technology 010402 general chemistry Photochemistry 01 natural sciences Chloride law.invention Photochromism Photoactive layer law Solar cell medicine smart window Renewable Energy Sustainability and the Environment business.industry sol-gel chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Glazing Dye-sensitized solar cell Electrochromism Optoelectronics 0210 nano-technology business Materialforschung und Optik Layer (electronics) medicine.drug |
| Popis: | Different approaches have been studied to evaluate the efficiency of the photoactive layer in a photochromic (PC) device. The studied device combines materials typically used in dye-sensitized solar cell (DSSC) and an electrochromic (EC) layer of WO3. First, we examine if the dye could be attached directly to the EC layer forming an efficient photoactive layer to colour the PC device. Further, different TiO2 layers have been coated on the EC layer to enhance dye loading and two different sol-gel TiO2 layers and the post-treatment of the EC layer with a titanium(IV) chloride tetrahydrofuran complex have been studied. The dye loading of different photoactive layers and their efficiencies in DSSC have been evaluated and discussed with regard to the performance of the PC devices. The results confirmed that the dye could be attached to the WO3 layer, but that the voltage of the DSSC is too low to colour the device. To realize a functioning PC device, the addition of TiO2 is necessary. The best performance (deep and fast colouration) is obtained for a PC device with a TiO2 sol-gel layer; the solar transmittance of the PC device decreases from 57% to 7.5% in under three minutes. According to our knowledge, this is the first study of the impact of the photoactive layer on the photochromic glazing's response. |
| Databáze: | OpenAIRE |
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