Plasmonic enhanced dye−sensitized solar cells with phthaloyl chitosan−based gel polymer electrolyte / Shahan Shah
In this work, light absorption improves with the use of plasmonic nanoparticles by photovoltaic (PV) devices. Silver (Ag, 100 nm size), gold (Au, 100 nm in size), copper (Cu, 60−70 nm in size) and platinum (Pt) nanoparticles (NP) added to the titanium dioxide (TiO2) active layer of dye sensitized...
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| Format: | Thesis |
| Published: |
2023
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| Online Access: | http://studentsrepo.um.edu.my/15800/2/Shahan_Shah.pdf http://studentsrepo.um.edu.my/15800/1/Shahan_Shah.pdf http://studentsrepo.um.edu.my/15800/ |
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| Summary: | In this work, light absorption improves with the use of plasmonic nanoparticles by
photovoltaic (PV) devices. Silver (Ag, 100 nm size), gold (Au, 100 nm in size), copper
(Cu, 60−70 nm in size) and platinum (Pt) nanoparticles (NP) added to the titanium dioxide
(TiO2) active layer of dye sensitized solar cells (DSSCs) have improved performance.
The phthaloyl−chitosan based gel polymer electrolytes (GPEs) containing
tetrapropylammonium iodide (TPAI) salt, 1−butyl−3−methylimidazolium iodide (BMII)
ionic liquid (IL), tert−butyl pyridine (TBP), guanidine thiocyanate (GuSCN) as additives
and ( ) redox couple were used as an ion conducting medium for the DSSCs
operation. The highest ionic conductivity 12.69×10−3 S cm−1 was exhibited by the GPE
containing 3 wt.% GuSCN. The photocurrent density−photovoltage (J−V) characteristics,
intensity modulated photocurrent spectroscopy (IMPS) and intensity modulated voltage
spectroscopy (IMVS) were determined. On illuminating with AM1.5 (1000 W m−2) light,
DSSCs fabricated with 0 wt.% of NP constructed photoanode has exhibited
comparatively low solar cell efficiency (η) of 4.59% with short−circuit current density
of 9.90 mA cm−2 and open−circuit voltage of 0.69 V. The same cell also exhibited
charge transport time of 17.13 ms and charge recombination time of 36.43 ms. On
illuminating with AM1.5 light, the cell with 2 wt.% Ag NP in the photoanode exhibits an
η of 6.99 %. The is 14.25 mA cm−2, is 0.71 V and fill factor (FF) is 70%. The
DSSC with photoanode containing 2 wt.% Ag NP also exhibits of 7.00 ms and of
87.22 ms. On illumination with AM1.5 light, the cell with 3 wt.% Au NP in the
photoanode exhibits an η of 8.54% with of 19.82 mA cm−2, of 0.72 V and FF of 60%. The same cell also exhibited of 7.32 ms and of 115.33 ms. Under the
illumination of AM1.5, the DSSC with photoanode containing 3 wt.% of Cu NP exhibits
higher η of 7.19% with
of 13.35 mA cm−2, of 0.76 V and FF of 71%. The same
cell also exhibited the lowest of 2.30 ms and of 143.19 ms. Under the illumination
of AM1.5, the DSSC with photoanode containing with 3 wt.% of Pt NP exhibits higher η
of 6.54% with of 19.60 mA cm−2, of 0.51 V and FF of 65%.
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