Solvent effect on the optoelectronic properties of fluorine doped SnO2 thin films prepared by spray-pyrolysis

Muniramaiah, Reddivari; Reddy, Nandarapu Purushotham; Santhosh, Rompivalasa; Fernandes, Jean Maria; Padmanaban, Dilli Babu; Maharana, Gouranga; Kovendhan, M.; Veerappan, Ganapathy; Laxminarayana, Gangalakurti; Murali, Banavoth; Joseph, D. Paul

doi:10.1016/j.surfin.2022.102174

Cited by 9 publications

(10 citation statements)

References 81 publications

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“…The deposited FTO presented the main orientation in the plane (200) according to XRD results, this preferential orientation was observed by Muniramaiah et al [ 41 ] for FTO deposited by spay pyrolysis. The deposited FTO material on the synthesized glass substrate from photovoltaic glass and other industrial wastes presented improved parameters such as sheet resistance and crystallization, compared from that deposited on commercial soda-lime glass.…”

Section: Discussionsupporting

confidence: 68%

Photovoltaic Glass Waste Recycling in the Development of Glass Substrates for Photovoltaic Applications

et al. 2023

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Because of the increasing demand for photovoltaic energy and the generation of end-of-life photovoltaic waste forecast, the feasibility to produce glass substrates for photovoltaic application by recycling photovoltaic glass waste (PVWG) material was analyzed. PVWG was recovered from photovoltaic house roof panels for developing windows glass substrates; PVWG was used as the main material mixed with other industrial waste materials (wSG). The glass was casted by air quenching, annealed, and polished to obtain transparent substrates samples. Fluorine-doped tin oxide (FTO) was deposited as back contact on the glass substrates by spray pyrolysis. The chemical composition of the glass materials was evaluated by X-ray fluorescence (XRF), the thermal stability was measured by differential thermal analysis (DTA) and the transmittance was determined by UV-VIS spectroscopy. The surface of the glass substrates and the deposited FTO were observed by scanning electron microscopy (SEM), the amorphous or crystalline state of the specimens were determined by X-ray diffraction (XRD) and the sheet resistance was evaluated by the four-point probe method. The sheet resistance of the deposited FTO on the wSG substrate was 7.84 ± 3.11 Ω/□, lower than that deposited on commercial soda-lime glass (8.48 ± 3.67 Ω/□), meaning that this material could present improved conduction of the produced electrons by the photovoltaic effect. This process may represent an alternative to produce glass substrates from waste materials that could be destined for photovoltaic applications, especially the production of ecological photovoltaic windows.

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Section: Discussionsupporting

confidence: 68%

Photovoltaic Glass Waste Recycling in the Development of Glass Substrates for Photovoltaic Applications

et al. 2023

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“…These codoped samples are collectively referred to as NFTO thin films. In our previous work, [ 54 ] we have explored the deposition of only fluorine‐doped SnO 2 and the optimal deposition parameters of which are considered in the present work to stabilize and explore the effect of “Nb” codoping along with “F”.…”

Section: Methodsmentioning

confidence: 99%

“…The substrate temperature was maintained at 410 °C for all the thin films. [53,54] The concentration of fluorine (10 wt%) is kept constant and Nb is varied from 1 to 5 wt% (1, 2, 3, 4, and 5 wt%) as cationic codopant into the SnO 2 lattice and the codoped SnO 2 thin films will hereafter be referred to as NFTO1, NFTO2, NFTO3, NFTO4, and NFTO5, respectively. These codoped samples are collectively referred to as NFTO thin films.…”

Section: Deposition Of Thin Filmsmentioning

confidence: 99%

“…The defect density variation with Nb codoping concentration is shown in Figure 7b, where NFTO4 shows the highest defect density in the order of 10 21 (per cm 3 ), a similar range of defect density was reported significantly in the literature. [54,[82][83][84][85] The defect density increases up to Nb 4 wt% (NFTO4 film), and it decreases for further increase in concentration, leading to a quenching effect. Moreover, the increasing free carrier absorption leads to quenching in luminescence properties.…”

Section: Optical Propertiesmentioning

confidence: 99%

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Anionic Fluorine and Cationic Niobium Codoped Tin Oxide Thin Films as Transparent Conducting Electrodes for Optoelectronic Applications

Muniramaiah

Reddy

Santhosh

et al. 2023

Physica Status Solidi (a)

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Exploration of alternatives for supplementing indium tin oxide electrode is currently trending due to scarcity of indium, leading to a steep increase in the cost of related optoelectronic components. Codoping of niobium (Nb) and fluorine (F) into SnO2 lattice as cationic and anionic dopants, respectively, is explored by spray deposition technique. A fixed 10 wt% F and varying Nb concentration from 0 to 5 wt% is incorporated into the SnO2 lattice. X‐ray diffraction reveals substitution of Nb and F into the SnO2 lattice without altering the structure. Optical transmittance is found to increase with Nb content up to 4% of Nb (77.59%), and it decreases thereafter. Scanning electron microscope and optical profiler imply a relatively smooth surface with sharp‐tipped particles which vary with Nb concentration. Sheet resistance decreases up to 3 wt% of Nb doping and increases thereafter. Contact angle measurement indicates that upon doping with Nb, the films turn hydrophilic. Among the deposited films, 4 wt% of Nb‐doped film shows the highest figure of merit of 5.01 × 10−3 Ω−1. The surface work function of the 4 wt% Nb‐doped SnO2 film is 4,687.85 meV. The optimal films are tested as electrodes in dye‐sensitized solar cells and are discussed in detail.

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“…Among these methods, spray pyrolysis is known for its simple implementation, low cost and large-area production. Moreover, it allows obtaining crystallized thin films without any subsequent heat treatment [14,15].…”

Section: Introductionmentioning

confidence: 99%

Nanomechanical behavior, adhesion and wear resistance of tin oxide coatings for biomedical applications

Chayoukhi,

Gassoumi,

Dhifelaoui

et al. 2024

Materialwissenschaft Werkst

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This study investigates the properties of tin oxide coatings employed in biomedical applications. The films were deposited on a clean glass substrate, preheated at 450 °C, applying the spray pyrolysis technique as the latter produces crystallized thin films without the need for further heat treatment. X‐ray diffraction analysis showed that tin oxide films had a tetragonal structure characterized by a preferential orientation (111). The measurements of reflectance and transmittance revealed a wide optical band gap of 4.0 eV. Nanoindentation tests showed that the tin oxide coating, with a hardness of 5.9 GPa and a Young's modulus of 78 GPa, exhibited elastic‐plastic behavior. In addition, tribological tests indicated that tin oxide coating had a very low coefficient of friction (μ=0.06), high wear resistance (wear rate 2.10−5 mm3 N−1 m−1) and good adhesion to the substrate (critical adhesion load of 5.55 N). It was also noticed that tin oxide thin films had antibacterial activity due to their nanocrystalline impurities. These properties make tin oxide perfectly acceptable for biomedical applications.

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Solvent effect on the optoelectronic properties of fluorine doped SnO2 thin films prepared by spray-pyrolysis

Cited by 9 publications

References 81 publications

Photovoltaic Glass Waste Recycling in the Development of Glass Substrates for Photovoltaic Applications

Photovoltaic Glass Waste Recycling in the Development of Glass Substrates for Photovoltaic Applications

Anionic Fluorine and Cationic Niobium Codoped Tin Oxide Thin Films as Transparent Conducting Electrodes for Optoelectronic Applications

Nanomechanical behavior, adhesion and wear resistance of tin oxide coatings for biomedical applications

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