Performance Investigation of Mott-Insulator LaVO3 as a Photovoltaic Absorber Material

Dixit, Himanshu; Punetha, Deepak; Pandey, Saurabh Kumar

doi:10.1007/s11664-019-07581-0

Cited by 18 publications

(7 citation statements)

References 47 publications

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“…The average lattice strain showed ε = 0.202. The dislocation density δ is formulated by the equation [58][59][60] : Consequently, the dislocation density was 1.76 × 10 9 cm -2 . The determined dislocation density agrees with previously reported data in the literature [61][62][63] .…”

Section: Resultsmentioning

confidence: 99%

Optical investigation and computational modelling of BaTiO3 for optoelectronic devices applications

Elmahgary

Mahran

Ganoub

et al. 2023

Sci Rep

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ABX3 perovskite-based materials have attracted research attention in various electronic and optoelectronic applications. The ability to tune the energy band gap through various dopants makes perovskites a potential candidate in many implementations. Among various perovskite materials, BaTiO3 has shown great applicability as a robust UV absorber with an energy band gap of around 3.2 eV. Herein, we provide a new sonochemical-assisted solid-phase method for preparing BaTiO3 thin films that optoelectronic devices can typically be used. BaTiO3 nano-powder and the thin film deposited on a glass substrate were characterized using physicochemical and optical techniques. In addition, the work demonstrated a computational attempt to optically model the BaTiO3 from the atomistic level using density functional theory to the thin film level using finite difference time domain Maxwell's equation solver. Seeking repeatability, the dispersion and the extinction behavior of the BaTiO3 thin film have been modeled using Lorentz-Dude (LD) coefficients, where all fitting parameters are listed. A numerical model has been experimentally verified using the experimental UV–Vis spectrometer measurements, recording an average root-mean-square error of 1.44%.

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Section: Resultsmentioning

confidence: 99%

Optical investigation and computational modelling of BaTiO3 for optoelectronic devices applications

Elmahgary

Mahran

Ganoub

et al. 2023

Sci Rep

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“…Perovskite oxides such as LaVO 3 films are well known as ideal materials for optoelectronic devices due to their high absorption in the visible region. [19][20][21][22]. Although these properties have been demonstrated in prior research on LaVO 3 -based optoelectronic devices [19][20][21][22], most of these properties were achieved on opaque substrates.…”

Section: Introductionmentioning

confidence: 96%

Highly stable semitransparent multilayer graphene/LaVO₃ vertical-heterostructure photodetectors

Lee¹,

Jung²,

Shin³

et al. 2022

Nanotechnology

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A heterostructure composed of combination of semi-metallic graphene (Gr) and high-absorption LaVO3 is ideal for high-performance translucent photodetector applications. Here, we present multilayer Gr/LaVO3 vertical-heterostructure semitransparent photodetectors (PDs) with various layer number (Ln). At Ln = 2, the PD shows the best performance of responsivity (R) 0.094 AW-1 and a specific detectivity (D*) of 7.385  107 cm Hz1/2W−1 at 532 nm. Additionally, the average visible transmittance of PD is 63%, that it is semitransparent. We increased R by approximately 13%, from 0.564 to 0.635 μA cm-2 by an Al reflector on the semitransparent PD. The R of unencapsulated PD maintains ~86 % (absolutely from 0.571 to 0.493 μA cm-2) of its initial R value after 2000 h at 25°C temperature/30% relative humidity, showing good stability. This behavior is superior to previously-reported graphene-based PDs. These results show that they have great potential for semitransparent optoelectronic applications.

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“…A wide spectrum of materials has been investigated to improve the stability and efficiency of perovskite solar cells. Common examples of hole-transport layers (HTLs) are 2,2″,7,7″-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′spirobifluorene (Spiro-OMeTAD), [39,67,163] poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), [162] nickel oxide (NiO), [164] poly(3-hexylthiophene-2,5-diyl) (P3HT), [165] triphenylamine (TPA), [166,167] and poly[bis(4-phenyl)(2,4,6-trimethylphenyl)amine (PTAA), [106] while typical electron-transport layers (ETLs) are titanium oxide (TiO 2 ), [95,168,169] zinc oxide (ZnO), [170] C 60 , [48,171] [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) [116,172,173] and indene-C 60 bisadduct (ICBA). [59,174] The choice of CTLs is dependent on the solar cell architecture (e.g., n-i-p or p-i-n).…”

Section: Interface Engineeringmentioning

confidence: 99%

Engineering Stable Lead‐Free Tin Halide Perovskite Solar Cells: Lessons from Materials Chemistry

et al. 2023

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demonstrating a lower dependence on fossil fuels. Although crystalline silicon (c-Si) is still the market front runner for PV due to its ideal bandgap for single-junction solar cells, c-Si does not have a readily tunable bandgap. This makes c-Si less suited for indoor PV or multijunction solar cells, which require alternative bandgaps to operate at their peak. In just over a decade of research, perovskite solar cells (PSCs) have emerged as an alternative PV technology which have tuneable bandgaps, low fabrication costs, solution processability, compliancy with flexible materials, long electron-hole diffusion length, and high charge carrier mobility. [2][3][4][5][6][7][8][9] The perovskite absorber layer is based on the ABX 3 crystal structure made up of organic/inorganic monovalent cations (A), a divalent cation (B) and one or more halides (X) as shown in Figure 1a. [10] Since the first publication on PSCs in 2009, the power conversion efficiencies (PCE) have gone from 3.8% to 25.7 %, making PSCs the fastest growing PV technology to date. [11][12][13] Despite their promise, toxic heavy metal element Pb (in the structure's B-site) is still required to achieve highly competitive efficiencies, [14][15][16][17][18][19][20][21][22][23] which is a major obstacle in the field that is yet to be overcome. In contact with moisture and/or light + oxygen lead halide perovskites can easily decompose into watersoluble compounds of lead, [24][25][26][27][28] which then inevitably accumulate within the food chain and therefore have the potential to ingress into the human body. [29] While several low toxicity metal halide alternatives to Pb have been proposed, [30][31][32][33][34][35] the favorable physical and optical properties of Sn make it the most promising substitute. [29,36] The first demonstration of Sn-halide PSCs was in 2014, where Hao et al. and Noel et al. reported 5.7% and 6.4% PCE respectively using methylammonium tin halides as the absorber layers (MAS-nIBr 2 and MASnI 3 , respectively). [30,31] At present, the highest performing Sn-halide PSCs show PCEs of over 14%; Yu et al. reported certified 14.03%-efficient 2D/3D perovskite solar cells, [37] while Jiang et al. achieved a certified PCE of 14.6% via a novel film fabrication route based on SnI 2 adducts (further details will be provided below). [38] To date, most of the progress with Sn-halide perovskites has been made using formamidinium tin iodide (FASnI 3 , see Figure 1b) and closely related recipes. [39][40][41][42][43] The favored use of the FA cation can be attributed to the higher formation energies of Sn vacancies in FASnI 3 and thus a lower hole density in comparison to MASnI 3 . [44] In comparison to their Pb-based counterparts, Sn-halide perovskites Substituting toxic lead with tin (Sn) in perovskite solar cells (PSCs) is the most promising route toward the development of high-efficiency lead-free devices. Despite the encouraging efficiencies of Sn-PSCs, they are still yet to surpass 15% and suffer detrimental oxidation of Sn(II) to Sn(IV). Since their...

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Performance Investigation of Mott-Insulator LaVO3 as a Photovoltaic Absorber Material

Cited by 18 publications

References 47 publications

Optical investigation and computational modelling of BaTiO3 for optoelectronic devices applications

Optical investigation and computational modelling of BaTiO3 for optoelectronic devices applications

Highly stable semitransparent multilayer graphene/LaVO₃ vertical-heterostructure photodetectors

Engineering Stable Lead‐Free Tin Halide Perovskite Solar Cells: Lessons from Materials Chemistry

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Performance Investigation of Mott-Insulator LaVO3 as a Photovoltaic Absorber Material

Cited by 18 publications

References 47 publications

Optical investigation and computational modelling of BaTiO3 for optoelectronic devices applications

Optical investigation and computational modelling of BaTiO3 for optoelectronic devices applications

Highly stable semitransparent multilayer graphene/LaVO3 vertical-heterostructure photodetectors

Engineering Stable Lead‐Free Tin Halide Perovskite Solar Cells: Lessons from Materials Chemistry

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Highly stable semitransparent multilayer graphene/LaVO₃ vertical-heterostructure photodetectors