Influence of polyaniline in polyaniline-tin oxide nanocomposite as counter electrode for dye sensitized solar cells

Aparna, S.; Elakhya, N.; Gopal, Gayatri; Rajesh, P.; Ramasamy, P.

doi:10.1016/j.ijleo.2017.11.101

Cited by 12 publications

(3 citation statements)

References 28 publications

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“…Following the above equation, the band gap decreases with the expanding the particle diameter and also discrete energy levels (with different quantum no) arise at the band edges of both the conduction band and valence band (shown in Figure 4b). The UV-absorption peaks of Cu-doped α-MnO 2 NPs that appeared around 300 nm is attributed to π−π* transition 46 between antibonding and bonding molecular orbital. As the molecules become larger with the temperature, the number of AOs (atomic orbitals) that are combined to form MOs (bonding and antibonding) increases, leading to an increasingly larger number of energy levels and decreasing the highest occupied molecular orbital−lowest unoccupied molecular orbital energy gap, 47 shown in schematic diagram (Figure 4b).…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Synthesis and Property of Copper-Impregnated α-MnO₂Semiconductor Quantum Dots

et al. 2018

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Because of the superior optical and electrical properties, copper-impregnated size tuneable high-temperature stable manganese dioxide semiconductor quantum dots (SQDs) have been successfully synthesized by a modified chemical synthesis technique. Their size-dependent dielectric properties, semiconducting properties, and current–voltage (I–V) characteristics have been investigated. X-ray diffraction pattern and Raman spectra confirmed that the required phase is present. Because of the different sintering temperature tuneable size of SQDs has been found and confirmed by high-resolution transmission electron microscopy. The band gap energy of the material is found to be 1.25–1.67 eV, measured from Tauc plot using UV–vis absorbance spectrum and their semiconducting properties have been confirmed by the non linear current–voltage (I–V) behavior. Most intense green emission peak of photoluminescence (PL) spectroscopy confirms the oxygen vacancy defect state. The stoke shifting of Raman spectra, UV absorption, and PL emission are the footprint of quantum confinement effect. Incorporation of a little amount of Cu in tetragonal hollandite structure of α-MnO2 generates strain within that structure. This leads to create sufficient crystal defect state as well as rise in dielectric constant accompanied with low dielectric loss and higher ac conductivity. All these highly desirable properties make the SQDs a potential candidate for developing multifunctional photo-electronic devices. Owing to the tuneable band gap and electronic transport of the SQDs, we realized that the controllable size paves the way for designing SQDs possessing unique properties for optical and electronic device applications. Using this material as a high dielectric separator, a high-performance supercapacitor has been successfully fabricated which can light up 15 light-emitting diodes for 47 min 23 s after charging them only for 30 s.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Synthesis and Property of Copper-Impregnated α-MnO₂Semiconductor Quantum Dots

et al. 2018

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“…The characteristic absorption bands for PANI are represented in the spectrum (fig. 4) at ~541 and 692 nm attributed to π-π*conjugated ring system, and π-π* polaron transitions, respectively [37]. The peak of PANI at around 554 nm is representing π-π* transition of the benzenoid ring [38].…”

Section: Uv-visible Spectral Studiesmentioning

confidence: 98%

Development and Physico-Chemical Characterization of Conducting Polymeric Zirconium Based Advanced Nanocomposite Ion-Exchangers for Environmental Remediation

Mispa¹,

Anusiya²,

Subramaniam³

et al. 2018

NHC

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Polyaniline-Zr(IV) tungstovanadate and Polyaniline-Zirconium oxide nanocomposite ion -exchangers were synthesized and physico-chemical characterization done by FT-IR-UV spectral studies, XRD, SEM and TGA. These composites are having high mechanical strength, good electrical conductivity and stability than their individual components. The organic polymeric component of the composites provides mechanical as well as chemical stability whereas the inorganic component supports the ion-exchange behavior and thermal stability. Both the inorganic and organic parts are jointly responsible for their improved electrical conductivity. They have more promising ion exchange capacity towards alkali metal halides and have selective adsorption towards Pb(II) ion and these can be used as powerful candidates for water softening

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“…Polyaniline (PANI) is one of the most versatile heterogeneous-conjugated polymers due to the capability to substitute metals and non-metal for TiO2 photocatalytic efficiency [25]. PANI also has potential applications in alcohol dehydration [26][27] adsorbents, supercapacitors [28], sensors [29], pervaporation applications [30][31] and multiwalled carbon nanotubes (MWCNTs) coating [32].…”

Section: Introductionmentioning

confidence: 99%

Preparation of Polyaniline/TiO2 Photovoltaic Solar Cell

Lukhman

Natar

Ghani

et al. 2021

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Polyaniline (PANI) and Kronos C doped Titanium dioxide (TiO2) was fabricated as PANI/TiO2 solar cell and reported on its simple photovoltaic performance detected by using voltameter and tested for stability for 12 months. The PANI and TiO2 were coated onto different indium tin oxide (ITO) glass plates by using a drop-casting method and sandwich attached for simple solar cell preparation. PT4 sample was the optimum solar cell with 0.2: 0.2 g of PANI: TiO2 ratio under 2 cm2 surface area based on the highest voltage produces from 100 mW cm-1 of light intensity metal highlight lamp. No voltage was detected for PT7 where the single layer TiO2 coated without PANI attached for solar cell system using same fabrication. It shows that PANI has a significant role in functionalizing the photovoltaic system. The C-N stretching of aromatic amine and C-N stretching for the benzenoid at peaks of 1222 and 1166 cm-1 respectively in FTIR spectra has confirmed the PANI structure supported by an XRD pattern. TP4 has the highest photovoltaic performance compared to other types of TiO2 based on the electron lifetime (τe) and the voltage produced was sustained up to 12 months.

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Influence of polyaniline in polyaniline-tin oxide nanocomposite as counter electrode for dye sensitized solar cells

Cited by 12 publications

References 28 publications

Synthesis and Property of Copper-Impregnated α-MnO₂Semiconductor Quantum Dots

Synthesis and Property of Copper-Impregnated α-MnO₂Semiconductor Quantum Dots

Development and Physico-Chemical Characterization of Conducting Polymeric Zirconium Based Advanced Nanocomposite Ion-Exchangers for Environmental Remediation

Preparation of Polyaniline/TiO2 Photovoltaic Solar Cell

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Influence of polyaniline in polyaniline-tin oxide nanocomposite as counter electrode for dye sensitized solar cells

Cited by 12 publications

References 28 publications

Synthesis and Property of Copper-Impregnated α-MnO2Semiconductor Quantum Dots

Synthesis and Property of Copper-Impregnated α-MnO2Semiconductor Quantum Dots

Development and Physico-Chemical Characterization of Conducting Polymeric Zirconium Based Advanced Nanocomposite Ion-Exchangers for Environmental Remediation

Preparation of Polyaniline/TiO2 Photovoltaic Solar Cell

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Product

Resources

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Synthesis and Property of Copper-Impregnated α-MnO₂Semiconductor Quantum Dots

Synthesis and Property of Copper-Impregnated α-MnO₂Semiconductor Quantum Dots