Photochemical performance of ZnO nanostructures in dye sensitized solar cells

Das, Partha Pratim; Mukhopadhyay, Soumita; Agarkar, Shruti; Jana, Arpita; Devi, P. Sujatha

doi:10.1016/j.solidstatesciences.2015.08.014

Cited by 20 publications

(12 citation statements)

References 45 publications

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“…Therefore, we have introduced ZnO-R as a scattering layer to overcome this issue. Thus, we have further fabricated cells employing nanoparticles as a blocking layer for better CdS sensitizing and nanorods as a scattering layer for pronounced light harvesting [ 31 – 32 41 – 42 ]. A significant enhancement in the photovoltaic performance has been noticed for the ZnO-P+R based cell exhibiting an efficiency of 1.06% ( Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The precipitate was further dried at 70 °C and calcined at 300 °C for 2 h. The resultant yellowish-orange powder was used for further studies. ZnO nanoparticles and nanorods were synthesized by a solution-growth process, the details of which are reported elsewhere [ 31 – 32 ].…”

Section: Methodsmentioning

confidence: 99%

“…The emission spectra of the same dispersion was recorded on a steady-state spectrofluorometer (QM-40, Photon Technology International) using a Xe lamp (150 W) as an excitation source with a bandpass of 5 nm at room temperature. The fluorescence quantum yield of the colloidal CdS solution was measured on the steady state fluorometer using an additional integrating sphere [ 32 ]. Zeta potential measurements were carried out on a Horiba Nanoparticle Analyzer-SZ100.…”

Section: Methodsmentioning

confidence: 99%

“…We evaluated their respective performance after sensitization with colloidal CdS. In addition, by using 1D ZnO nanorods as a scattering layer, improved photovoltaic activity of ZnO upon sensitization with colloidal CdS could be achieved [ 32 – 33 ].…”

Section: Introductionmentioning

confidence: 99%

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Performance of colloidal CdS sensitized solar cells with ZnO nanorods/nanoparticles

Roy

Das

Tathavadekar

et al. 2017

Beilstein J. Nanotechnol.

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As an alternative photosensitizer in dye-sensitized solar cells, bovine serum albumin (BSA) (a nonhazardous protein) was used in the synthesis of colloidal CdS nanoparticles (NPs). This system has been employed to replace the commonly used N719 dye molecule. Various nanostructured forms of ZnO, namely, nanorod and nanoparticle-based photoanodes, have been sensitized with colloidal CdS NPs to evaluate their effective performance towards quantum dot sensitized solar cells (QDSSCs). A polysulphide (Sx 2−)-based electrolyte and CuxS counter electrode were used for cell fabrication and testing. An interesting improvement in the performance of the device by imposing nanorods as a scattering layer on a particle layer has been observed. As a consequence, a maximum conversion efficiency of 1.06% with an open-circuit voltage (V OC) of 0.67 V was achieved for the ZnO nanorod/nanoparticle assembled structure. The introduction of ZnO nanorods over the nanoparticle led to a significant enhancement of the overall efficiency compared to the corresponding bare nanoparticles.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Performance of colloidal CdS sensitized solar cells with ZnO nanorods/nanoparticles

Roy

Das

Tathavadekar

et al. 2017

Beilstein J. Nanotechnol.

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“…Photoanodes used in PEC water splitting are n-type semiconductors that under illumination can photogenerate holes that oxidize water into O2. They mainly include various binary and ternary oxides [5], for instance, α-Fe2O3 [10,11], WO3 [12][13][14][15], ZnO [16,17], In2O3 [18], SnO2 [19], TiO2 [20][21], BiVO4 [22][23][24], CuWO4 [24,25], Bi2WO6 [25], and bismuth molybdates (Bi2O3•nMoO3) [26]. Among them, tungsten oxide (WO3) has been extensively studied as a photoanode for use in solar water splitting since its valence band maximum position can provide sufficient overpotential for…”

Section: Introductionmentioning

confidence: 99%

Improvement of sol-gel prepared tungsten trioxide photoanodes upon doping with ytterbium

Díaz-García

Gómez

2018

Journal of Photochemistry and Photobiology A: Chemistry

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Please cite this article as: Ana Korina Díaz-García, Roberto Gómez, Improvement of sol-gel prepared tungsten trioxide photoanodes upon doping with ytterbium, Journal of Photochemistry and Photobiology A: Chemistry https://doi. HIGHLIGHTS A sol-gel method for the preparation of Yb-doped WO3 photoanodes is presented. Ytterbium modification induces an increase in the photoresponse of WO3 electrodes. Yb changes WO3 morphology and surface charge without increasing carrier density. AbstractThe development of efficient and stable photoelectrodes keeps on being critical in the development of practical water splitting devices. Sol-gel synthesized tungsten trioxide thin film electrodes modified with ytterbium have been prepared on conducting glass substrates. All the obtained electrodes were found to be composed of monoclinic WO3, which is the photoactive crystal phase of WO3 for water oxidation. The photoelectrochemical behavior of both WO3 and WO3:Yb nanostructured electrodes in 0.1 M HClO4 is apparently characterized by a low degree of recombination. Ytterbium addition to tungsten trioxide improves its photoelectrochemical response as larger photocurrents are obtained without a significant change of the onset potential. This behavior is attributed primarily to a surface effect rather than on bulk doping. The addition of H2O2 to the aqueous electrolyte gives rise to both an increment in photocurrent and a shift of the photocurrent onset potential toward less positive values, which can be linked to the fact that hydrogen peroxide acts as an efficient hole scavenger. The implications of these findings in the mechanism of water photooxidation on WO3 are discussed.

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Self‐Assembled Au/TiO₂ Composite Photo‐Anode Film for Highly Efficient Dye‐Sensitized Solar Cells

Gong

et al. 2021

ChemistrySelect

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We introduce a simple method of preparing high-performance composite photo-anode by in situ self-assembly gold nanoparticle (Au NP) on Titanium dioxide (TiO 2 ) electron transport layer for dye-sensitized solar cells (DSSCs). By transmission electron microscope (TEM) test, the size of Au NP is about 5 nm. Energy disperse spectroscopy (EDS) shows that selfassembly metal nanoparticles are evenly dispersed in the photo-anode. Due to the localized surface plasmon resonance of Au NPs, the absorption of the composite photo-anode in the visible light is enhanced. And the result of electrochemical impedance spectroscopy (EIS) showed that the impedance of electron transmission is reduced and the electron life of solar cell is increased. As a result, the overall power conversion efficiencies (PCEs) of Au/TiO 2 -DSSCs significantly improved from 5.74 % to 7.05 % under optimal condition. What's more, the improvement in PCE does not affect its stability. We think that this work can improve the efficiency of solar cells by constructing Au/TiO 2 composite photo-anode, which is beneficial to its commercial application.

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Photochemical performance of ZnO nanostructures in dye sensitized solar cells

Cited by 20 publications

References 45 publications

Performance of colloidal CdS sensitized solar cells with ZnO nanorods/nanoparticles

Performance of colloidal CdS sensitized solar cells with ZnO nanorods/nanoparticles

Improvement of sol-gel prepared tungsten trioxide photoanodes upon doping with ytterbium

Self‐Assembled Au/TiO₂ Composite Photo‐Anode Film for Highly Efficient Dye‐Sensitized Solar Cells

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Photochemical performance of ZnO nanostructures in dye sensitized solar cells

Cited by 20 publications

References 45 publications

Performance of colloidal CdS sensitized solar cells with ZnO nanorods/nanoparticles

Performance of colloidal CdS sensitized solar cells with ZnO nanorods/nanoparticles

Improvement of sol-gel prepared tungsten trioxide photoanodes upon doping with ytterbium

Self‐Assembled Au/TiO2 Composite Photo‐Anode Film for Highly Efficient Dye‐Sensitized Solar Cells

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Product

Resources

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Self‐Assembled Au/TiO₂ Composite Photo‐Anode Film for Highly Efficient Dye‐Sensitized Solar Cells