Efficiency Enhancement of Dye-Sensitized Solar Cells Based on Gracilaria/Ulva Using Graphene Quantum Dot
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作者:
Saedi, Afsoon
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Islamic Azad Univ IAU, Fac Nat Resources & Environm, Sci & Res Branch, Tehran, IranIslamic Azad Univ IAU, Fac Nat Resources & Environm, Sci & Res Branch, Tehran, Iran
Saedi, Afsoon
[1
]
Moradi, Ali Mashinchian
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Islamic Azad Univ IAU, Fac Nat Resources & Environm, Sci & Res Branch, Tehran, IranIslamic Azad Univ IAU, Fac Nat Resources & Environm, Sci & Res Branch, Tehran, Iran
Moradi, Ali Mashinchian
[1
]
Kimiagar, Salimeh
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Islamic Azad Univ IAU, Phys Dept, Cent Tehran Branch, Nano Res Lab NRL, Tehran, IranIslamic Azad Univ IAU, Fac Nat Resources & Environm, Sci & Res Branch, Tehran, Iran
Kimiagar, Salimeh
[2
]
Panahi, Homayon Ahmad
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Islamic Azad Univ IAU, Chem Dept, Cent Tehran Branch, Tehran, IranIslamic Azad Univ IAU, Fac Nat Resources & Environm, Sci & Res Branch, Tehran, Iran
Panahi, Homayon Ahmad
[3
]
机构:
[1] Islamic Azad Univ IAU, Fac Nat Resources & Environm, Sci & Res Branch, Tehran, Iran
[2] Islamic Azad Univ IAU, Phys Dept, Cent Tehran Branch, Nano Res Lab NRL, Tehran, Iran
[3] Islamic Azad Univ IAU, Chem Dept, Cent Tehran Branch, Tehran, Iran
Dye-sensitized solar cells (DSSC) have been assembled using natural dyes extracted from the red (Gracilaria) and green (Ulva) algae as photosensitizers and the effect of adding Graphene quantum dot (GQD) has been investigated. The open-circuit voltage (V-OC) values of natural dyes of Gracilaria, Gracilaria + GQD, Ulva, and Ulva + GQD are 0.64, 0.73, 0.70, and 0.75, respectively. The short circuit current density (J(SC)) values are varied from 0.96 to 2.26 mA cm(-2), and the fill factor (FF) from 52 to 56% for the mentioned samples. The best-energy conversion efficiency of approximately 0.94% has been achieved for DSSC with Gracilaria + GQD with J(SC) equal 2.26 mA cm(-2), V-OC is 0.73 V, and FF is 56%.