New modified sol–gel method for preparation SrTiO3 nanostructures and their application in dye-sensitized solar cells

Gholamrezaei, Sousan; Niasari, M Salavati; Dadkhah, Mahnaz; Sarkhosh, Bijan

doi:10.1007/s10854-015-3726-4

Cited by 34 publications

(11 citation statements)

References 36 publications

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“…One of the reported materials for photoelectrodes is ZnO [77][78][79]. There are several other semiconductor oxide materials which can be used as photo-electrodes such as In2O3 [80][81], SnO2 [79,80,82], SrTiO3 [79,83,84], NiO [75,79] and Nb2O5 [79,81,86,87]. Among them TiO2 is the best candidate.…”

Section: Materials For Dsscs (Dye-sensitized Solar Cells)mentioning

confidence: 99%

Introduction, Past and Present Scenario of Solar Cell Materials

Rizwan

2021

Materials Research Foundations

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Solar cells convert sunlight into electricity directly. It is a reliable, non-toxic and pollution free source of electricity. Since 19th century researchers have been trying to investigate different materials for solar cell devices. Commercially, Si based solar are predominate in this field, however, with passage of time different materials have been reported. Solar cell techniques are based on three different generations. 1st generation is based on Si and 2nd generation includes thin-films of CuInGaSe, GaAs, CdTe and GaInP etc. whereas 3rd generation is based on organic, hybrid perovskites, quantum dot (QD)-sensitizers & dye-sensitizers solar cells. Among all these, the 3rd generation solar cells are the most efficient and more cost effective than 1nd and 2nd generation solar cells. The 2nd generation is less costly but also less efficient compared to 1st generation. 3rd generation faces degradation of the photovoltaic materials which is a major problem. In this chapter different reported materials since 19th century for solar cells are mentioned. The past and present scenarios of solar cells are discussed comprehensively. It is observed that Si-based and multijunction solar cells dominate the market. Although, theoretically it is reported that hybrid perovskites and quantum dot materials for solar cell are the most efficient materials for photovoltaic PV devices. In spite of the high efficiency the stability of organic, hybrid perovskites, QD-sensitizers &dye-sensitizer materials is a big challenge.

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Section: Materials For Dsscs (Dye-sensitized Solar Cells)mentioning

confidence: 99%

Introduction, Past and Present Scenario of Solar Cell Materials

Rizwan

2021

Materials Research Foundations

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“…These wide bandgap metal oxides act as electron carriers as well as the surface for dye adsorption. Various metal oxides such as TiO 2, 20 ZnO, 21 SnO 2, 22 Nb 2 O 5, 23 WO 3, 24 In 2 O 3, 25 SrTiO 3, 26 Zn 2 SnO 4, 27 BaSnO 3 28 and CoTiO 3 29 have been investigated. The selection of this metal oxide depends on the energy levels of valence band and conduction band, in effect to achieve effective charge separation and reduced recombination.…”

Section: Revamping Of Photoanodementioning

confidence: 99%

“…These perovskite oxide materials enticed the public attention because of their exceptional optical and structural effects. In 2015, ternary oxide strontium titanate (SrTiO 3 ) which have most structural similarity with TiO 2 was used as photoanode by Gholamrezaei et al 26 The SrTiO 3 nanostructures were synthesized by a modified sol‐gel method in presence of different synthetic ligands and organic Eosin yellow (EY) dye has been used as a sensitizer to investigate its effect on the efficiency of the DSSCs. This work resulted a DSSC having an efficiency of 0.58% and its short circuit current (J sc ) improved by four times.…”

Section: Revamping Of Photoanodementioning

confidence: 99%

Efficient charge collection of photoanodes and light absorption of photosensitizers: A review

Pallikkara

Kala

2020

Int J Energy Res

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Summary During the recent period of time, dye sensitized solar cells (DSSCs) have become an exciting invention to meet our energy demands. Its reasonable cost of production and easy fabrication make it a powerful competent to the conventional solar cells. But non‐achievement of expected efficiency is the key challenge faced by the scientific society. To overcome this, boundless research is going on the revamping of DSSC. Among the four chief parts of DSSC, the photoanodes gain more attention due to its dual function. Scilicet, it act as a charge carrier and as a surface for dye adsorption as well. Hence photoanode modification plays a crucial role in enhancing the power conversion efficiencies of DSSCs. It comprises of wide bandgap semiconducting metal oxides, among which TiO2 stands out with higher efficiency. Likewise in the case of photosensitizers, metal complex based dyes (mainly ruthenium based) take the lead in augmented efficiency. This paper critically reviews the work on all the metal oxides used as photoanode materials, comparing their band gap with the best efficiencies reported for each and analyzing their advantages and disadvantages. An overview of the performance of DSSCs based on different metal atom doped metal oxide photoanode, incorporation of various carbonaceous materials and different passivating agents has been included. Also, the modification in the photosensitizer has been discussed, examining the reports on organometallics based dyes and metal free organic dyes.

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“…The absorption that occurred in 226 nm is due to the fundamental absorption within the band gap of this material. The others absorption bands have been attributed to the impurities or vacancies [19][20]. The optical band gap of Ag 2 CdI 4 has been evaluated using the optical density (OD) vs. energy (E) plot (Figure 10b).…”

Section: Optical Property: Drs Spectrummentioning

confidence: 99%

Ag2CdI4: Synthesis, characterization and investigation the strain lattice and grain size

Ghanbari

Gholamrezaei

Salavati‐Niasari

2016

Journal of Alloys and Compounds

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In this work the Ag 2 CdI 4 nanostructures have been synthesized via a solid state reaction from reaction of AgI and CdI 2 as precursors. The effect of the mole ratio of precursors, time and temperature of reaction have been optimized to achieve the best product on morphology and purity. Nanostructures have been characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Raman (FT-IR) techniques, X-ray energy dispersive spectroscopy (EDS) and Ultraviolet spectroscopy (UVvis). The XRD patterns of nanostructures have been used to estimate the grain sizes and strain lattice. Grain size of nanostructures are in range of 5 -17 nm and the strain of lattice are changed in range of 0.0024 -0.014.The band gap of this nanostructures has been estimated by DRS spectrum about 5.4 eV. Raman spectroscopy has been confirmed the XRD results and show that the Ag 2 CdI 4 nanostructures have been synthesized. SEM and TEM images have been used for investigation of morphology of product. Results show that the best morphology and purity have been achieved in 12 h and 200 ºC in 1:1 mole ratio of precursors.

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New modified sol–gel method for preparation SrTiO3 nanostructures and their application in dye-sensitized solar cells

Cited by 34 publications

References 36 publications

Introduction, Past and Present Scenario of Solar Cell Materials

Introduction, Past and Present Scenario of Solar Cell Materials

Efficient charge collection of photoanodes and light absorption of photosensitizers: A review

Ag2CdI4: Synthesis, characterization and investigation the strain lattice and grain size

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