1. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
(a) Saraca asoca flowers, (b) dried Saraca asoca flowers, and (c) crushed powder

2. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
Chemical structures of gallic acid and quercetin present in Saraca asoca flowers

3. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
Sketch showing functioning of DSSC

4. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
UV–Vis absorption spectrum of (a) TiO2 photoanode, (b) the dye solution obtained from flowers of Saraca asoca, and (c) dye after adsorption onto the TiO2 surface. Inset shows the images of dye solution obtained from flowers of Saraca asoca and dye-anchored TiO2 film.

5. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
Basic molecular structure of anthocyanin and the binding between anthocyanin with TiO2

6. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
Infrared spectra of extracts obtained from Saraca asoca flowers

7. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
Cyclic voltammogram of natural dye extracted from Saraca asoca flowers at platinum electrode in acetonitrile solution containing 0.1 M TBAP supporting electrolyte, figures on the curves being the scan rates (mV s−1)

8. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
Schematic energy-level diagram showing electron injection from excited dye molecule to the conduction band of TiO2 and subsequent regeneration of the dye molecule

9. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
Photocurrent–voltage (J–V) curve for the DSSC sensitized by natural dye Saraca asoca under visible light illumination of intensity 100 mW/cm2 (electrolyte composition: 0.2 M LiI; 0.02 M I2 in acetonitrile)

10. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
Transient current–time (Jphoto–t) profile for the DSSC sensitized by Saraca asoca obtained under visible light illumination. Electrolyte composition and intensity are the same as in Fig. 9.

11. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
Power versus voltage curve of the DSSC using the natural dyes extracted from the Saraca asoca flowers

12. Date of download: 9/19/2016
Copyright © ASME. All rights reserved.
Natural Dye Extracted From Saraca asoca Flowers as Sensitizer for TiO2-Based Dye-Sensitized Solar Cell
J. Sol. Energy Eng. 2016;138(5): doi: /
Figure Legend:
IPCE of Saraca asoca natural dye extracts used as sensitizer for TiO2-based DSSC. The inset image shows the absorption spectra of (a) bare TiO2 film and (b) dye solution obtained from flowers of Saraca asoca.