Compact Titania Films by Spray Pyrolysis for Application as ETL in Perovskite Solar Cells

Kumar, Sarath Kumar Sathish; Aftab, Asim; Ahmad, Md. Imteyaz

doi:10.1007/s11664-020-08464-5

Cited by 5 publications

(4 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…All the samples displayed good light-absorbing ability in the range of 350–700 nm, which leads to an enhancement of the opto-electronic device performance [ 85 , 86 ]. The main TiO 2 absorption peak at a wavelength below 350 nm was clearly observed in all of the prepared film spectra, consistent with the published data [ 87 , 88 , 89 ]. Figure 5 A shows a slight increase in the absorption intensity following TiCl 4 treatment.…”

Section: Resultssupporting

confidence: 91%

Investigation and Optimization of Mxene Functionalized Mesoporous Titania Films as Efficient Photoelectrodes

Iqbal

Hamdan

2021

Materials

View full text Add to dashboard Cite

Three-dimensional mesoporous TiO2 scaffolds of anatase phase possess inherent eximious optical behavior that is beneficial for photoelectrodes used for solar energy conversion applications. In this regard; substantial efforts have been devoted to maximizing the UV and/or visible light absorption efficiency; and suppressing the annihilation of photogenerated charged species; in pristine mesoporous TiO2 structures for improved solar illumination conversion efficiency. This study provides fundamental insights into the use of Mxene functionalized mesoporous TiO2 as a photoelectrode. This novel combination of Mxene functionalized TiO2 electrodes with and without TiCl4 treatment was successfully optimized to intensify the process of photon absorption; charge segregation and photocurrent; resulting in superior photoelectrode performance. The photocurrent measurements of the prepared photoelectrodes were significantly enhanced with increased contents of Mxene due to improved absorption efficiency within the visible region; as verified by UV–Vis absorption spectroscopy. The anatase phase of TiO2 was significantly augmented due to increased contents of Mxene and postdeposition heat treatments; as evidenced by structural analysis. Consequently; an appreciable coverage of well-developed grains on the FTO surface was observed in SEM images. As such; these newly fabricated conductive mesoporous TiO2 photoelectrodes are potential candidates for photoinduced energy conversion and storage applications.

show abstract

Section: Resultssupporting

confidence: 91%

Investigation and Optimization of Mxene Functionalized Mesoporous Titania Films as Efficient Photoelectrodes

Iqbal

Hamdan

2021

Materials

View full text Add to dashboard Cite

show abstract

“…The optical behavior of all the coated films on FTO substrates has been characterized using UV-Vis spectroscopy as displayed in fig 7 . All the samples display good light-absorbing feature in the range of 350-700 nm which leads to enhancement of the Opto-electronic device performance [86,87]. The main TiO2 absorption peak at wavelength less than 350 nm is clearly observed in all prepared film spectra which is consistent with the published data [88][89][90]. Band alignment and band gap are another important characteristics that describes the optical features of photocathode.…”

Section: Synthesis Of Mxene (Ti3ctx) Powdersupporting

confidence: 87%

Investigation and Optimization of Mxene functionalized Mesoporous Titania Films as Efficient Photoelectrodes

Iqbal¹,

Hamdan²

2021

Preprint

View full text Add to dashboard Cite

Three-Dimensional mesoporous TiO2 scaffolds of anatase phase possess inherent eximious optical behavior that are beneficial in designing photoelectrodes for solar energy conversion applications. However, substantial efforts have been devoted in maximizing the UV and/or visible light absorption efficiency, and suppressing the annihilation of photogenerated charged species in pristine mesoporous TiO2 structure for improved solar illumination conversion efficiencies. This study provides the fundamental insights into Mxene functionalized mesoporous TiO2 as photoelectrode for the first time. This novel combination of Mxene functionalized TiO2 electrodes with and without TiCl4 treatments have been successfully optimized to intensify the process of photon absorption, charge segregation and photocurrent, resulting in superior photoelectrode performance. The photocurrent measurements of prepared photoelectrodes are significantly enhanced upon increased contents of Mxene due to improved absorption efficiency within the visible region as verified by UV–Vis absorption spectroscopy. Moreover, as evident through structural analysis, the anatase phase of TiO2 is well grown due to increased contents of Mxene and post-deposition heat treatments. Consequently, an appreciable coverage of well-developed grains on FTO surface observed in SEM images. Thereby, the newly fabricated conductive mesoporous TiO2 photoelectrodes are potential candidates for photoinduced energy conversion and storage purposes.

show abstract

“…An electron transport layer must comply with some requirements: (1) well-matched energy alignment to trigger electron transfer while blocking holes; (2) high transparency to allow efficient light harvesting; and (3) excellent electron mobility to minimize charge accumulation [20][21][22][23][24]. TiO 2 offers high performance as an ETL in PSCs due to its alignment of the TiO 2 conduction band with the perovskite layer [25][26][27]; furthermore, the percentage of transparency of TiO 2 is greater than 85% in practically all spectral windows [28].…”

Section: Introductionmentioning

confidence: 99%

Growth of Nanocolumnar TiO2 Bilayer by Direct Current Reactive Magnetron Sputtering in Glancing-Angle Deposition Configuration for High-Quality Electron Transport Layer

Rosales Medina,

Avelar Muñoz,

Flores Sigala

et al. 2023

Micromachines

View full text Add to dashboard Cite

The electron transport layer (ETL) plays a crucial role in solar cell technology, particularly in perovskite solar cells (PSCs), where nanostructured TiO2 films have been investigated as superior ETLs compared to compact TiO2. In this study, we explored the nanocolumnar growth of TiO2 in the anatase phase for bilayer thin films by DC reactive magnetron sputtering (MS) technique and glancing-angle deposition (GLAD). For the growth of the compact TiO2 layer, it was found that the crystalline quality of the films is strongly dependent on the sputtering power, and the samples deposited at 120 and 140 W are those with the best crystalline quality. However, for the nanocolumnar layer, the reactive atmosphere composition determined the best crystalline properties. By optimizing the growth parameters, the formation of TiO2 nanocolumns with a cross-sectional diameter ranging from 50 to 75 nm was achieved. The average thickness of the films exceeded 12.71 ± 0.5 µm. All nanostructured films were grown at a constant GLAD angle of 70°, and after deposition, the measured inclination angle of the nanocolumns is very close to this, having values between 68 and 80°. Furthermore, a correlation was observed between the quality of the initial layer and the enhanced growth of the TiO2 nanocolumns. All bilayer films are highly transparent, allowing light to pass through up to 90%, and present a band gap with values between 3.7 and 3.8 eV. This article offers the experimental parameters for the fabrication of a nanocolumnar TiO2 using the magnetron sputtering technique and the glancing-angle deposition configuration.

show abstract

Compact Titania Films by Spray Pyrolysis for Application as ETL in Perovskite Solar Cells

Cited by 5 publications

References 43 publications

Investigation and Optimization of Mxene Functionalized Mesoporous Titania Films as Efficient Photoelectrodes

Investigation and Optimization of Mxene Functionalized Mesoporous Titania Films as Efficient Photoelectrodes

Investigation and Optimization of Mxene functionalized Mesoporous Titania Films as Efficient Photoelectrodes

Growth of Nanocolumnar TiO2 Bilayer by Direct Current Reactive Magnetron Sputtering in Glancing-Angle Deposition Configuration for High-Quality Electron Transport Layer

Contact Info

Product

Resources

About