Plasmonic Dye Sensitized Solar Cells Incorporated with TiO2-Ag Nanostructures

Danladi, Eli; Ahmad, Muhammad Sani; Bikimi, Ayiya; Babatunde, O. A.

doi:10.9734/irjpac/2016/25042

Cited by 9 publications

(8 citation statements)

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“…8, the open-circuit voltage (Voc) of plasmonenhanced DSSCs and TiO 2 -only DSSC are almost the same, while the short-circuit current density (Jsc) significantly increased by introducing Ag@SiO 2 NPs. The improvement of Jsc in the plasmon enhanced DSSCs was mainly caused by the increase of photocurrent due to the enhanced light absorption of dye with the help of localized surface plasmons (LSPs) [23][24][25][29][30][31].…”

Section: Photoelectrochemical Properties Of Dsscsmentioning

confidence: 99%

“…Introduction of metallic nanoparticles (NPs) in suitable places to trap or confine light inside the active layer and enhance the absorption in the organic semiconductor film could provide superior performances [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30]. One of the important issues in plasmonic DSSCs is the stability of the NPs [31].…”

Section: Introductionmentioning

confidence: 99%

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Silver Nanoparticles as Artificial Antennas for Enhanced Light-Harvesting and Charge Transfer in Dye-Sensitized Solar Cells

Danladi¹,

Gyuk²,

Ahmad³

et al. 2016

IJMSA

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Abstract:We present an investigation on introducing core-shell Ag@SiO 2 nanoparticles (NPs) into dye-sensitized solar cells. Ag@SiO 2 present the chemical stability to iodide/triiodide electrolyte, and help to localize most of dye molecules around plasmonic silver nanoparticles (AgNPs), hence increasing the optical absorption consequently the overall conversion efficiency of the device. Deployment of the silver-modified assembly as a photo anode in dye-sensitized solar cells leads to solar-toelectrical energy conversion with an overall efficiency of 0.0088% for Ag-TiO 2 photo anode and 0.0176% for Ag@SiO 2 -TiO 2 photo anode. This represents a 100.7% improvement over the performance of otherwise identical solar cell lacking corrosionprotected silver nanoparticles. The improvement is manifested chiefly as an increase in photocurrent density due to enhanced light harvesting by the AgNPs. The results revealed that, the performance of DSSCs could be well improved through enhancing the light absorption by local surface plasmon (LSP) effect from Ag@SiO 2 NPs by electronically and chemically protecting the metal from recombination and corrosion. The mechanism of getting the best utilization efficiency of LSP enhanced optical field is also investigated.

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Section: Photoelectrochemical Properties Of Dsscsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Silver Nanoparticles as Artificial Antennas for Enhanced Light-Harvesting and Charge Transfer in Dye-Sensitized Solar Cells

Danladi¹,

Gyuk²,

Ahmad³

et al. 2016

IJMSA

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“…Experiments suggest that near-field enhancement plays an important role in enhancing DSSCs and photovoltaics. ,, The degree of the plasmonic enhancement can be varied by varying the distance between the photocarrier generator or the photosensitizer (a molecular chromophore or a quantum dot) and the MNP, as this varies the magnitude of the dipole–dipole coupling. To date, however, reported plasmonic enhancement of the conversion efficiency of solar cells have been small: a fraction of a percent up to 2–3%. − …”

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confidence: 99%

Plasmon-Mediated Absorption and Photocurrent Spectra in Sensitized Solar Cells

2017

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Plasmon resonances in metal nanoparticles (MNPs) can be used to enhance the efficiency of photoinduced electron transfer from a sensitizer (a molecule or a quantum dot (QD)) to a semiconductor electrode. Here we use a model Hamiltonian approach to study the optical response and the steady state electron injection rate (SSIR) of a hybrid system, consisting of a sensitizer that is coupled to a metal nanoparticle via dipole coupling and to a semiconductor electrode via electronic coupling. Counterintuitively, the total absorption cross section for the coupled system and the SSIR are correlated only for small coupling; in the relevant domain of large enhancement we observe anticorrelation. A maximum SSIR as a function of the dipole coupling strength is predicted analytically, and shown to result from the competition between the plasmonic field enhancement and the Purcell effect. In the case of pulsed excitation, the appearance of a Fano resonance and its reversal is illustrated as the dipole coupling strength grows, and for strong couplings Rabi splitting is observed. Interestingly, in the case of continuous wave (CW) excitation, we find plasmon-induced resonance energy transfer, leading to strong SSIR at incident light frequencies that are far detuned from the sensitizer transition frequency and are fully controllable.

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“…Plasmonic introduction in photoactive layers of DSSC, to trap or confine light inside the active layer and enhance the absorption in the semiconductor film could provide superior performances [11][12][13][14][15][16][17][18][19][20][21][22] presumably due to their unique electronic, optical and magnetic properties [10,11].…”

Section: Introductionmentioning

confidence: 99%

Plasmon-Enhanced Efficiency in Dye Sensitized Solar Cells Decorated with Size-Controlled Silver Nanoparticles Based on Anthocyanins as Light Harvesting Pigment

Danladi¹,

Owolabi²,

Olowomofe³

et al. 2016

JPMT

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Abstract:The enhancement in efficiency of dye sensitized solar cells decorated with size-controlled silver nanoparticles based on anthocyanins as light harvesting pigment through successive ionic layer adsorption and reaction (SILAR) was demonstrated. Studies indicate that, the short-circuit current density (J SC ) and open-circuit voltage (V OC ), of DSSCs containing AgNPs were significantly improved. The photovoltaic (PV) performance decreased with increasing size of AgNPs from one SILAR cycle to two SILAR cycles, the best performance was achieved using the anode prepared with one SILAR cycle. An enhancement of 35.8 % was achieved when the thickness was around 16 nm (one SILAR) over the bare FTO device. When the size of AgNPs was around 32 nm (two SILAR), an enhancement of 10.4% was recorded over the reference device. This selective enhancement in efficiency in the Ag plasmonic absorption regions is indicative of the fact that the incorporation of metal nanoparticles is beneficial for enhanced absorption and charge separation.

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Plasmonic Dye Sensitized Solar Cells Incorporated with TiO2-Ag Nanostructures

Cited by 9 publications

References 0 publications

Silver Nanoparticles as Artificial Antennas for Enhanced Light-Harvesting and Charge Transfer in Dye-Sensitized Solar Cells

Silver Nanoparticles as Artificial Antennas for Enhanced Light-Harvesting and Charge Transfer in Dye-Sensitized Solar Cells

Plasmon-Mediated Absorption and Photocurrent Spectra in Sensitized Solar Cells

Plasmon-Enhanced Efficiency in Dye Sensitized Solar Cells Decorated with Size-Controlled Silver Nanoparticles Based on Anthocyanins as Light Harvesting Pigment

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