Engineering the mesoporous TiO2 layer by a facile method to improve the performance of perovskite solar cells

Yang, Meifang; Zhang, Yuhong; Du, Jinyue; Yang, Lili; Fan, Lin; Sui, Yongming; Liu, Xiaoyan; Xue, Leilei; Yang, Jing; Wang, Fengyou

doi:10.1016/j.electacta.2019.06.050

Cited by 9 publications

(1 citation statement)

References 31 publications

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“…Our goal here is to address this issue; in this work, we propose and demonstrate an improved charge extraction in PSCs by incorporating hemispherical core–shell AgO x @Ag nanoparticles (HOAPs) into the m-TiO 2 /perovskite heterointerface. − The HOAPs were obtained by evaporating an Ag thin film on the m-TiO 2 layer, followed by annealing and ozone treatments. The Ag NPs were self-assembled during the annealing process.…”

Section: Introductionmentioning

confidence: 99%

Hot-Carrier Injection Antennas with Hemispherical AgO_x@Ag Architecture for Boosting the Efficiency of Perovskite Solar Cells

Zhang

Yang

et al. 2020

ACS Appl. Mater. Interfaces

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In the past few years, the power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) have increased from 3.81 to 25.2%, surpassing those of all almost all thin films solar cells. For high-performance PSCs, it is pivotal to finely regulate the charge dynamics and light management between perovskite and charge-transfer materials to balance the trade-off between optical and electrical properties. In this study, a hemispherical core–shell silver oxide (AgO x ) @ silver nanoparticles (Ag NPs) were grown onto the surface of the mesoporous titanium dioxide (m-TiO2) electron-transport layer (ETL) to improve the photogenerated charge transfer without sacrificing the stability of the devices. The results show that the electrical properties of m-TiO2 have been enhanced owing to the injection of a hot carrier in Ag NPs into the m-TiO2 ETL filling the trap states of m-TiO2. However, AgO x on the Ag NP surfaces can isolate the touch between Ag NPs and perovskite, thereby prohibiting the perovskite decomposition. Compared with the control device, the PCE was increased from 17.87 to 20.33% for the device with HOAPs. In the meantime, the long-term stability of the PSCs is not sacrificed, which is pivotal for fabricating PSCs and optoelectronic devices.

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Section: Introductionmentioning

confidence: 99%

Hot-Carrier Injection Antennas with Hemispherical AgO_x@Ag Architecture for Boosting the Efficiency of Perovskite Solar Cells

Zhang

Yang

et al. 2020

ACS Appl. Mater. Interfaces

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Reticulated Mesoporous TiO₂ Scaffold, Fabricated by Spray Coating, for Large‐Area Perovskite Solar Cells

et al. 2019

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Development of reproducible, low‐cost fabrication technologies that are readily adaptable to large‐scale production, is one of the main challenges in the field of perovskite solar cells (PSCs). So far, for all the other layers in a solar cell, large‐area deposition methods have been adapted, except for mesoporous fabrication. Herein, the fabrication of mesoporous TiO2 scaffolds using a large‐area deposition technique, such as spray coating, is shown. Moreover, this technique induces the formation of a very specific reticulated structure with well‐delimited, oval‐shaped cavities. The cavities have irregular dimensions, with diameters in the range of 3–7 μm, ≈350 nm height, resulting in an overall increase in roughness of one order of magnitude, compared with the spin‐coated mesoporous scaffold. Using this rough structured mesoporous TiO2 in PSCs not only does not affect the efficiency of solar cells but actually improves it from an average of 10% to 12% in comparison with the devices containing a spin‐coated mesoporous scaffold.

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Recent progress in electron transport bilayer for efficient and low-cost perovskite solar cells: a review

Lachore

Andoshe

Mekonnen

et al. 2021

J Solid State Electrochem

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Engineering the mesoporous TiO2 layer by a facile method to improve the performance of perovskite solar cells

Cited by 9 publications

References 31 publications

Hot-Carrier Injection Antennas with Hemispherical AgO_x@Ag Architecture for Boosting the Efficiency of Perovskite Solar Cells

Hot-Carrier Injection Antennas with Hemispherical AgO_x@Ag Architecture for Boosting the Efficiency of Perovskite Solar Cells

Reticulated Mesoporous TiO₂ Scaffold, Fabricated by Spray Coating, for Large‐Area Perovskite Solar Cells

Recent progress in electron transport bilayer for efficient and low-cost perovskite solar cells: a review

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Engineering the mesoporous TiO2 layer by a facile method to improve the performance of perovskite solar cells

Cited by 9 publications

References 31 publications

Hot-Carrier Injection Antennas with Hemispherical AgOx@Ag Architecture for Boosting the Efficiency of Perovskite Solar Cells

Hot-Carrier Injection Antennas with Hemispherical AgOx@Ag Architecture for Boosting the Efficiency of Perovskite Solar Cells

Reticulated Mesoporous TiO2 Scaffold, Fabricated by Spray Coating, for Large‐Area Perovskite Solar Cells

Recent progress in electron transport bilayer for efficient and low-cost perovskite solar cells: a review

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Hot-Carrier Injection Antennas with Hemispherical AgO_x@Ag Architecture for Boosting the Efficiency of Perovskite Solar Cells

Hot-Carrier Injection Antennas with Hemispherical AgO_x@Ag Architecture for Boosting the Efficiency of Perovskite Solar Cells

Reticulated Mesoporous TiO₂ Scaffold, Fabricated by Spray Coating, for Large‐Area Perovskite Solar Cells