Preparation of ZnO compact layer using vacuum ultraviolet for dye-sensitized solar cells

Wang, Jinfeng; Wang, Jiaduo; Ding, Jie; Wei, Yimin; Zhang, Jingbo

doi:10.1016/j.solidstatesciences.2022.106860

Cited by 12 publications

(7 citation statements)

References 30 publications

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“…At the same time, VUV irradiation can decompose organic matter to produce hydroxyl free radicals, oxygen free radicals, etc. These free radicals can induce further decomposition of organic matter and finally adsorb on the surface of the metal oxide film, thus passivating surface oxygen defects. − …”

Section: Introductionmentioning

confidence: 99%

High-Quality TiO₂ Electron Transport Film Prepared via Vacuum Ultraviolet Illumination for MAPbI₃ Perovskite Solar Cells

Dong,

Wang,

Men

et al. 2024

Inorg. Chem.

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The electron transport layer (ETL) plays an important role in determining the conversion efficiency and stability of perovskite solar cells (PSCs). Here, TiO 2 thin film was prepared by irradiating diisopropoxy diacetylacetone titanium precursor thin film with 172 nm vacuum ultraviolet (VUV) at a low temperature. The prepared TiO 2 thin film has higher electron mobility and conductivity. As it is used as an ETL for MAPbI 3 PSCs, its band structure is better matched with the perovskite, and at the same time, due to the good interface contact, more uniform perovskite crystals are formed. Most importantly, a large number of hydroxyl radicals were formed during VUV irradiation of the precursor film, which made up for the oxygen defect present on the surface of the TiO 2 thin film, and were adsorbed to the film surface. These hydroxyl groups form hydrogen bonds with methylammonium (MA) components on the MAPbI 3 buried surface, thus promoting the transfer of photogenerated electrons at the MAPbI 3 /ETL interface. The power conversion efficiency of PSCs fabricated in air with the ETL prepared by VUV irradiation is 20.46%, which is higher than that of the contrast solar cell based on the sintered ETL (17.96%).

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Section: Introductionmentioning

confidence: 99%

High-Quality TiO₂ Electron Transport Film Prepared via Vacuum Ultraviolet Illumination for MAPbI₃ Perovskite Solar Cells

Dong,

Wang,

Men

et al. 2024

Inorg. Chem.

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“…Other characterizations such as ultraviolet−visible absorption spectroscopy (UV−vis), steady-state photoluminescence (PL) and time-resolved photoluminescence (TRPL) spectroscopy, atomic force microscopy (AFM), X-ray diffraction (XRD) pattern, Xray photoelectron spectroscopy (XPS), ultraviolet photoelectron spectroscopy (UPS), current density−voltage (J−V) curves, correla-tions between V oc , short circuit photocurrent (J sc ), and incident light intensity, EQE spectroscopy, and dark state J−V curves were described in detail in our previously published work. 29 2.5. Theory Calculations.…”

Section: Introductionmentioning

confidence: 99%

Surface Crystallization Enhancement and Defect Passivation for Efficiency and Stability Enhancement of Inverted Wide-Bandgap Perovskite Solar Cells

Dong,

Men,

Wang

et al. 2024

ACS Appl. Mater. Interfaces

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Wide-bandgap (WBG) inverted perovskite solar cells (PSCs) are used as the top cell for tandem solar cells, which is an effective way to outperform the Shockley–Queisser limit. However, the low efficiency and poor phase stability still seriously restrict the application of WBG inverted PSCs. Here, the surface of the WBG perovskite film was passivated by the synthesized 1,2,4-tris(3-thienyl)benzene (THB). The THB size well matches with the halogen ion vacancy on the perovskite surface, and the S atom in THB can strongly interact with Pb2+ on the surface of the WBG perovskite film to the greatest extent, which effectively passivates surface defects and suppresses the recombination of carriers caused by these defects. At the same time, the S atom in THB occupied the migration site of the halogen ions, which inhibits the migration of halogen ions. Due to the strong conjugation effect and stability of THB, it can be locked on the surface of perovskite to increase the lattice strength and inhibit the segregation of photoinduced halide, thus improving the performance and operational stability of PSCs. The THB-modified WBG (E g = 1.71 eV) PSC achieves a maximum power conversion efficiency of 20.75%, and its 99.0% is retained after 1512 h at a relative humidity of 10–25%. Under the irradiation of 1000 lx LED light, the indoor power conversion efficiency of the THB-modified WBG PSC reaches 34.15%.

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“…The blocking layer is made from different materials and preparation methods to have a dense and uniform structure that prevents direct contact between the electrolyte and the FTO surface. However, the previous processes and materials require complex chemical syntheses, which causes inconsistent results [5][6][7][8][9]. Therefore, it is necessary to find a more reliable and simpler way to produce the blocking layer.…”

Section: Introductionmentioning

confidence: 99%

Performance Improvement of Dye-Sensitized Solar Cells with Pressed TiO2 Nanoparticles Layer

Huang

Meen

et al. 2023

Coatings

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A simple and low-cost fabrication method of dye-sensitized solar cells (DSSCs) was developed to improve the structure and performance of the photoanode with the pressed layer and compact TiO2 thin film using spin coating, screen printing, and mechanical compression. In this study, four different TiO2 layers were adopted to fabricate photoanodes: a mesoporous TiO2 nanoparticles (NPs) layer, a pressed TiO2 NPs layer, a mesoporous TiO2 NPs layer on the TiO2 compact thin film, and a pressed TiO2 NPs layer on the TiO2 compact thin film. The compact thin film was deposited on the fluorine-doped tin oxide (FTO) glass via spin coating, while the mesoporous TiO2 NPs layer was deposited via the screen-printing method. The pressed TiO2 NPs layer was produced by compressing the mesoporous TiO2 NPs layer with a hydraulic press machine. When using the pressed TiO2 NPs layer for the photoanode of DSSC, the power conversion efficiency of DSSC was enhanced the most. The electron lifetime for DSSC with photoanodes based on the pressed TiO2 NPs and mesoporous TiO2 NPs layers were 8.217 and 6.287 ms, respectively. The power conversion efficiency of DSSC with photoanodes based on the pressed TiO2 NPs layer was 5.4%, while that based on the mesoporous TiO2 NPs layer was 4.08%. DSSC with photoanodes based on the pressed TiO2 NPs layer showed a significant increase in the power conversion efficiency by 36.16% compared to that based on the mesoporous TiO2 NPs layer.

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Preparation of ZnO compact layer using vacuum ultraviolet for dye-sensitized solar cells

Cited by 12 publications

References 30 publications

High-Quality TiO₂ Electron Transport Film Prepared via Vacuum Ultraviolet Illumination for MAPbI₃ Perovskite Solar Cells

High-Quality TiO₂ Electron Transport Film Prepared via Vacuum Ultraviolet Illumination for MAPbI₃ Perovskite Solar Cells

Surface Crystallization Enhancement and Defect Passivation for Efficiency and Stability Enhancement of Inverted Wide-Bandgap Perovskite Solar Cells

Performance Improvement of Dye-Sensitized Solar Cells with Pressed TiO2 Nanoparticles Layer

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Preparation of ZnO compact layer using vacuum ultraviolet for dye-sensitized solar cells

Cited by 12 publications

References 30 publications

High-Quality TiO2 Electron Transport Film Prepared via Vacuum Ultraviolet Illumination for MAPbI3 Perovskite Solar Cells

High-Quality TiO2 Electron Transport Film Prepared via Vacuum Ultraviolet Illumination for MAPbI3 Perovskite Solar Cells

Surface Crystallization Enhancement and Defect Passivation for Efficiency and Stability Enhancement of Inverted Wide-Bandgap Perovskite Solar Cells

Performance Improvement of Dye-Sensitized Solar Cells with Pressed TiO2 Nanoparticles Layer

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Product

Resources

About

High-Quality TiO₂ Electron Transport Film Prepared via Vacuum Ultraviolet Illumination for MAPbI₃ Perovskite Solar Cells

High-Quality TiO₂ Electron Transport Film Prepared via Vacuum Ultraviolet Illumination for MAPbI₃ Perovskite Solar Cells