A novel leaves and needles like TiO2 (LNT) electron transfer layer (ETL) as an alternative to meso-porous TiO2 electron transfer layer (ETL) in perovskite solar cell

Latif, Hamid; Azher, Zuha; Shabbir, Syeda Ammara; Rasheed, Saba; Pervaiz, Erum; Sattar, Abdul; Imtiaz, Ayesha

doi:10.1016/j.optmat.2020.110281

Cited by 4 publications

(4 citation statements)

References 36 publications

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“…Various methods, including atomic layer deposition [22], sol-gel synthesis [23], hydrothermal reaction [24], and 3D printing [25], have been employed to tailor the porosity of TiO 2 . Additionally, increasing its specific area has been pursued through the development of needle-like microstructures [26,27] and the fabrication of aligned TiO 2 nanotubes [28,29], among others.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Photocatalytic Activity of Immobilized TiO2 Using Laser-Micropatterned Surfaces

Giannakis,

Zervou,

Triantis

et al. 2024

Applied Sciences

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In the past, the application of TiO2 slurry reactors has faced difficulties concerning the recovery and reusability of the catalyst. In response to these challenges, immobilized photocatalyst systems have been investigated, wherein the catalyst is fixed onto a solid support, frequently with reduced photocatalytic performance. In the present study, thin TiO2 films were developed in the anatase phase by the sol-gel process and spin-cast on laser-microstructured silicon substrates, to form photocatalytic surfaces of increased activity. The TiO2 films were thoroughly characterized using SEM-EDX, XRD, UV–Vis spectroscopy, and Raman spectroscopy. The photocatalytic activity of these surfaces was evaluated by the degradation of atrazine in aqueous solution under UV irradiation. Their photocatalytic activity was found to be significantly enhanced (mean kobs 24.1 × 10−3 min−1) when they are deposited on laser-microstructured silicon compared with flat silicon (mean kobs 4.9 × 10−3 min−1), approaching the photocatalytic activity of sol-gel TiO2 fortified with Degussa P25, used as a reference material (mean kobs 32.7 × 10−3 min−1). During the photocatalytic process, several transformation products (TPs) of atrazine, namely 2-chloro-4-(isopropylamino)-6-amino-s-triazine (CIAT), 2-chloro-4-amino-6-(ethylamino)-s-triazine (CAET), and 2-chloro-4.6-diamino-s-triazine (CAAT), were identified with LC–MS/MS. The stability of the photocatalytic surfaces was also investigated and remained unchanged through multiple cycles of usage. The surfaces were further tested with two other pollutants, i.e., 2,4,6-trichlorophenol and bisphenol-a, showing similar photocatalytic activity as with atrazine.

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Section: Introductionmentioning

confidence: 99%

Enhancing the Photocatalytic Activity of Immobilized TiO2 Using Laser-Micropatterned Surfaces

Giannakis,

Zervou,

Triantis

et al. 2024

Applied Sciences

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“…Furthermore, TiO 2 is commonly used as a substitute for storing gas in silicon dioxide [1,2] and as a replacement for ultra-thin oxide dielectric in logic elements [3][4][5] due to its high dielectric constant. Additionally, TiO 2 is also used in a variety of emerging electronics, including solar cells [6][7][8][9][10][11], perovskite-based solar cells [12,13], anti-reflection coatings [7,8], gas sensors [14,15], electrochromic displays [16,17], planar waveguides [4], and field-effect transistors [3,5]. In 1972, multiphase photocatalysts were proposed by two researchers, Fujishima and Honda, via decomposing water on TiO 2 to generate oxygen and hydrogen gas [18].…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, increasing the film compactness is also an excellent functional technique for preventing the recombination of electrons and holes in solar cells [9]. Although DMF is used to inhibit the aforementioned drawbacks, only a few reports discuss the effects of concentration or doses on the post-annealing temperatures for TiO 2 film formation [12,13]. Hamid Latif, et al, reported that the deposition of the compact TiO 2 layer without DMF, but both the active CH 3 NH 3 PbBr 3 layer and spiro-OMeTAD as a hole transport layer were prepared in DMF solution [12].…”

Section: Introductionmentioning

confidence: 99%

“…Although DMF is used to inhibit the aforementioned drawbacks, only a few reports discuss the effects of concentration or doses on the post-annealing temperatures for TiO 2 film formation [12,13]. Hamid Latif, et al, reported that the deposition of the compact TiO 2 layer without DMF, but both the active CH 3 NH 3 PbBr 3 layer and spiro-OMeTAD as a hole transport layer were prepared in DMF solution [12]. Govindhasamy Murugadoss, et al, also reported that the perovskite CH 3 NH 3 PbI 3 layer was prepared using a PbI 2 solution dissolved in DMF solvent with stirring at 70 • C. However, the increased current density is attributed to the improved crystal structure obviously induced by DMF solvent via annealing.…”

Section: Introductionmentioning

confidence: 99%

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The Effects of Annealing Temperatures and Dimethylformamide Doses on Porous TiO2 Films

Huang

et al. 2022

Crystals

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In this study, we develop a facile and feasible synthetic technique for producing denser porous titanium dioxide (TiO2) films. The porous TiO2 films are effectively prepared using a sol–gel process with dimethylformamide (DMF). The TiO2 solution is synthesized by adjusting DMF doses ranging from 0 to 10 wt%, and the as-grown TiO2 films are further annealed at different temperatures from 300 to 500 °C. The TiO2 films exhibit an asymmetry anatase TiO2 phase as annealing temperatures increase, and a denser structure as DMF doses increase. The optical properties of all samples are studied, and the porous TiO2 obtained by 7.5 wt% DMF dose demonstrates a remarkable transmittance and reflectance of 51.87% and 27.55%, respectively, in the visible region from 350 to 850 nm when compared to the pure TiO2 films. The calculated band gap values range from 3.15 to 3.25 eV. Furthermore, the resistivity of 350 °C-annealed porous TiO2 thin film is determined by the Hall effect, revealing an increase from 4.46 to an of average 4.79 ohm · cm after injecting DMF solvent. These findings have the potential to assist a growing number of optoelectronic applications.

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Comparative study of 2D/3D hybrid perovskite solar cell containing different modified carbon nanomaterials based Electron Transport Layers (ETL)

Rasheed,

Latif,

Fareed U Din Masood

et al. 2023

Optical Materials

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A novel leaves and needles like TiO2 (LNT) electron transfer layer (ETL) as an alternative to meso-porous TiO2 electron transfer layer (ETL) in perovskite solar cell

Cited by 4 publications

References 36 publications

Enhancing the Photocatalytic Activity of Immobilized TiO2 Using Laser-Micropatterned Surfaces

Enhancing the Photocatalytic Activity of Immobilized TiO2 Using Laser-Micropatterned Surfaces

The Effects of Annealing Temperatures and Dimethylformamide Doses on Porous TiO2 Films

Comparative study of 2D/3D hybrid perovskite solar cell containing different modified carbon nanomaterials based Electron Transport Layers (ETL)

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