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Dye-sensitized solar cells using phthaloylchitosan based gel polymer electrolyte containing I¯/I3¯ redox species / Shahan Shah

Gel polymer electrolytes (GPE) consisting of phthaloylchitosan (PhCh), polyethylene oxide (PEO), dimethylformamide (DMF), ethylene carbonate (EC),tetrapropyl ammonium iodide (TPAI) and iodine (I2) have been prepared and characterized using electrochemical impedance spectroscopy (EIS). The highest co...

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Main Author: Shahan , Shah
Format: Thesis
Published: 2016
Subjects:
Q Science (General)
Online Access:http://studentsrepo.um.edu.my/9686/1/Shahan_Shah.pdf
http://studentsrepo.um.edu.my/9686/2/Shahan_Shah_%2D_Dissertation.pdf
http://studentsrepo.um.edu.my/9686/
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spelling my.um.stud.96862019-02-19T00:44:48Z Dye-sensitized solar cells using phthaloylchitosan based gel polymer electrolyte containing I¯/I3¯ redox species / Shahan Shah Shahan , Shah Q Science (General) Gel polymer electrolytes (GPE) consisting of phthaloylchitosan (PhCh), polyethylene oxide (PEO), dimethylformamide (DMF), ethylene carbonate (EC),tetrapropyl ammonium iodide (TPAI) and iodine (I2) have been prepared and characterized using electrochemical impedance spectroscopy (EIS). The highest conductivity of 11.1 mS cm-1 was obtained for 5.04 wt.% PhCh-1.26 wt.% PEO-31.51 wt.% DMF-37.81wt.% EC-22.68wt.% TPAI-1.7 wt. % I2 GPE. Dye-sensitized solar cell (DSSCs) have been fabricated by sandwiching GPE between FTO/TiO2-dye photoanode and platinum/FTO counter electrode. The photocurrent density-voltage (J-V) characteristics of the DSSCs have been measured under white light illumination of 100 W m-2 with active area of 0.20 cm2. The optimized GPE exhibits the efficiency of 7.1 % using N3 dye as sensitizer and 0.81 % with mixed natural dyes. The natural dyes used were anthocyanin (An) and chlorophyll (Chl) which have been extracted from black rice and fragrant screwpine (Pandanus amaryllifolius) leave, respectively using methanol as solvent. The anthocyanin and chlorophyll dyes were characterized using UV-Vis absorption spectroscopy. While the anthocyanin dye has a broader absorption peak at 541 nm, the chlorophyll dye has two prominent absorption peaks at 410 nm and 663 nm. The anthocyanin and chlorophyll dyes were deposited sequentially on the TiO2 electrode. The optimized GPE has been added with tert-butyl-pyridine (TBP) at different concentration as additives and have been tested in DSSC. With the addition of 8 wt. % of TBP, the conductivity of GPE decreased to 10.28 mS cm-1. However,the open circuit voltage, (Voc) and the efficiency of DSSC using 8 wt. % TBP increased to 0.73 V and 8.84 %, respectively. 2016-11 Thesis NonPeerReviewed application/pdf http://studentsrepo.um.edu.my/9686/1/Shahan_Shah.pdf application/pdf http://studentsrepo.um.edu.my/9686/2/Shahan_Shah_%2D_Dissertation.pdf Shahan , Shah (2016) Dye-sensitized solar cells using phthaloylchitosan based gel polymer electrolyte containing I¯/I3¯ redox species / Shahan Shah. Masters thesis, University of Malaya. http://studentsrepo.um.edu.my/9686/
institution Universiti Malaya
building UM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Malaya
content_source UM Student Repository
url_provider http://studentsrepo.um.edu.my/
topic Q Science (General)
spellingShingle Q Science (General)
Shahan , Shah
Dye-sensitized solar cells using phthaloylchitosan based gel polymer electrolyte containing I¯/I3¯ redox species / Shahan Shah
description Gel polymer electrolytes (GPE) consisting of phthaloylchitosan (PhCh), polyethylene oxide (PEO), dimethylformamide (DMF), ethylene carbonate (EC),tetrapropyl ammonium iodide (TPAI) and iodine (I2) have been prepared and characterized using electrochemical impedance spectroscopy (EIS). The highest conductivity of 11.1 mS cm-1 was obtained for 5.04 wt.% PhCh-1.26 wt.% PEO-31.51 wt.% DMF-37.81wt.% EC-22.68wt.% TPAI-1.7 wt. % I2 GPE. Dye-sensitized solar cell (DSSCs) have been fabricated by sandwiching GPE between FTO/TiO2-dye photoanode and platinum/FTO counter electrode. The photocurrent density-voltage (J-V) characteristics of the DSSCs have been measured under white light illumination of 100 W m-2 with active area of 0.20 cm2. The optimized GPE exhibits the efficiency of 7.1 % using N3 dye as sensitizer and 0.81 % with mixed natural dyes. The natural dyes used were anthocyanin (An) and chlorophyll (Chl) which have been extracted from black rice and fragrant screwpine (Pandanus amaryllifolius) leave, respectively using methanol as solvent. The anthocyanin and chlorophyll dyes were characterized using UV-Vis absorption spectroscopy. While the anthocyanin dye has a broader absorption peak at 541 nm, the chlorophyll dye has two prominent absorption peaks at 410 nm and 663 nm. The anthocyanin and chlorophyll dyes were deposited sequentially on the TiO2 electrode. The optimized GPE has been added with tert-butyl-pyridine (TBP) at different concentration as additives and have been tested in DSSC. With the addition of 8 wt. % of TBP, the conductivity of GPE decreased to 10.28 mS cm-1. However,the open circuit voltage, (Voc) and the efficiency of DSSC using 8 wt. % TBP increased to 0.73 V and 8.84 %, respectively.
format Thesis
author Shahan , Shah
author_facet Shahan , Shah
author_sort Shahan , Shah
title Dye-sensitized solar cells using phthaloylchitosan based gel polymer electrolyte containing I¯/I3¯ redox species / Shahan Shah
title_short Dye-sensitized solar cells using phthaloylchitosan based gel polymer electrolyte containing I¯/I3¯ redox species / Shahan Shah
title_full Dye-sensitized solar cells using phthaloylchitosan based gel polymer electrolyte containing I¯/I3¯ redox species / Shahan Shah
title_fullStr Dye-sensitized solar cells using phthaloylchitosan based gel polymer electrolyte containing I¯/I3¯ redox species / Shahan Shah
title_full_unstemmed Dye-sensitized solar cells using phthaloylchitosan based gel polymer electrolyte containing I¯/I3¯ redox species / Shahan Shah
title_sort dye-sensitized solar cells using phthaloylchitosan based gel polymer electrolyte containing i¯/i3¯ redox species / shahan shah
publishDate 2016
url http://studentsrepo.um.edu.my/9686/1/Shahan_Shah.pdf
http://studentsrepo.um.edu.my/9686/2/Shahan_Shah_%2D_Dissertation.pdf
http://studentsrepo.um.edu.my/9686/
_version_ 1738506290303336448
score 13.211869

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