Efficient carbon electrode perovskite solar cells with robust buffer interfaces

Lu, Xiayao; Li, Yaqing; Dong, Chen; Gao, Yueyue; Yue, Gentian; Kong, Ling‐Bin; Wang, Zhijie; Qu, Shengchun; Tan, Furui

doi:10.1016/j.jmrt.2023.05.038

Cited by 17 publications

(5 citation statements)

References 51 publications

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“…The slope distinctly decreased to 1.65 kT / q when employing Y-TiO 2 ETL, implying that the nonradiative recombination inside the PSC devices is dramatically inhibited. In addition, the connection between J SC and light intensity can be shown using the equation: J SC ∝ I α (α ≤ 1), where I is the light intensity and α is an exponential factor that is used to evaluate charge recombination. , Usually, the closer to 1 the value of α, the higher the charge separation rate and the lower the recombination rate the PSC has. It can be seen in Figure f that the device with the Y-TiO 2 ETL shows an α value of 0.984, and the value is 0.977 for the device with the TiO 2 ETL, suggesting that incorporating the Y element benefits in reducing carrier recombination.…”

Section: Resultsmentioning

confidence: 99%

Effect of Yttrium-Incorporated TiO₂ Electron Transport Layer on the Photovoltaic Performance of Triple-Cation Perovskite Solar Cells

Jiang,

He,

et al. 2023

J. Phys. Chem. C

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Achieving an excellent electron transport layer is significant for highperformance perovskite solar cells. A TiO 2 compact film is extensively applied as an electron transport layer. However, some limiting issues, such as unfavorable band offset, unsatisfactory electrical conductivity, low electron mobility, and high-density defects, remain in the TiO 2 electron transport layer. In this work, yttrium (Y) is proposed as a dopant in the TiO 2 electron transport layer. It is revealed that the incorporation of Y promotes the Fermi energy level of TiO 2 shift upward, bringing about more favorable energy-level alignment for the transport of photogenerated carriers. In addition, the device assembled with a Y-TiO 2 electron transport layer exhibits an increased built-in potential, suggesting a more powerful driving force for charge separation and transport. Eventually, the triple-cation perovskite solar cell equipped with a Y-TiO 2 electron transport layer acquires an efficiency of 20.09%. It is superior to that of the TiO 2 -based device (17.28%). The results indicate that Y-ion doping is a promising method to fabricate highly efficient perovskite solar cells.

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Section: Resultsmentioning

confidence: 99%

Effect of Yttrium-Incorporated TiO₂ Electron Transport Layer on the Photovoltaic Performance of Triple-Cation Perovskite Solar Cells

Jiang,

He,

et al. 2023

J. Phys. Chem. C

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“…As discussed in Sections 3 and 4, favorable energetic alignment can be achieved by modifying the carbon work function, and strategic interlayer selection, which can both bridge the energetic offset and serve as a protective buffer layer against solvent attack during carbon deposition. [ 59,110 ] For this reason, it is important to accurately report the work function of carbon electrode materials. Indeed, in Section 5 we illustrate the wide range of measured work functions reported for carbon electrodes (spanning ≈4–6 eV) and the impact of this parameter on device V OC .…”

Section: Prospectsmentioning

confidence: 99%

“…Unencapsulated devices retained 80% of their efficiency working at maximum power point (MPP) in ambient atmosphere (40–50% RH). [ 59,110 ] NiO x in this case also protects the organic polymer from solvent attack during carbon deposition. To address the issue of high recombination at the carbon interface, the Tan group also explored an alternative two‐pronged approach.…”

Section: Alternative Materials At the Perovskite‐carbon Interfacementioning

confidence: 99%

“…In addition to their throughput advantage, these processes feature lower CAPEX and running costs, making them more appealing for the upscaling and commercialization of C‐PSCs. [ 29,57–59 ] Moreover, C‐PSCs have already shown highly promising performance, with their record PCE recently exceeding 22%. [ 59 ] Notably, the record PCE for fully roll‐to‐roll‐coated C‐PSCs now stands at 16.7%; meanwhile, reference PSCs using evaporated gold electrodes on the same fully roll‐to‐roll coated stack only marginally exceed this figure at 17.4%.…”

Section: Introductionmentioning

confidence: 99%

“…[ 29,57–59 ] Moreover, C‐PSCs have already shown highly promising performance, with their record PCE recently exceeding 22%. [ 59 ] Notably, the record PCE for fully roll‐to‐roll‐coated C‐PSCs now stands at 16.7%; meanwhile, reference PSCs using evaporated gold electrodes on the same fully roll‐to‐roll coated stack only marginally exceed this figure at 17.4%. [ 58 ] These figures show great promise for the commercial deployment of C‐PSCs.…”

Section: Introductionmentioning

confidence: 99%

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Carbon Electrodes for Perovskite Photovoltaics: Interfacial Properties, Meta‐analysis, and Prospects

Zouhair,

Clegg,

Valitova

et al. 2024

Solar RRL

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Carbon electrodes have gained significant attention as a cost‐effective, sustainable, stable, and scalable replacement for metal electrodes in perovskite solar cells (PSCs). However, traditional carbon‐electrode‐based PSCs (C‐PSCs) lack a hole‐selective layer (HSL) due to their incompatibility with the most effective organic HSLs employed in the PSC literature. In turn, the absence of an HSL has been identified as one of the main factors hindering the performance of C‐PSCs. Consequently, numerous studies have recognized the pivotal significance of the region between the perovskite absorber and the carbon electrode in C‐PSCs, proposing various interfacial engineering strategies to improve the performance of these solar cells. Given the rapid evolution of this field, an up‐to‐date and comprehensive review of C‐PSCs is in order. Key areas of focus of this review include the shift from high‐temperature to low‐temperature carbon electrodes, strategies to improve energetic alignment at the interface, novel approaches such as hole‐selective bilayers, and alternative carbon deposition methods to reduce solvent damage. Additionally, this review presents a comprehensive meta‐analysis—the first of its kind in the C‐PSC literature—to assess how various interfacial modifications impact critical C‐PSC performance metrics, offering valuable insights for future advancements in the field.This article is protected by copyright. All rights reserved.

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Current State and Future Perspectives of Printable Organic and Perovskite Solar Cells

Li,

Lin,

Jen

2023

Advanced Materials

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Photovoltaic technology presents a sustainable solution to address the escalating global energy consumption and a reliable strategy for achieving net‐zero carbon emissions by 2050. Emerging photovoltaic technologies, especially the printable organic and perovskite solar cells, have attracted extensive attention due to their rapidly transcending power conversion efficiencies and facile processability, providing great potential to revolutionize the global photovoltaic market. To accelerate these technologies to translate from the laboratory scale to the industrial level, it is critical to develop well‐defined and scalable protocols to deposit high‐quality thin films of photoactive and charge‐transporting materials. Herein, the current state of printable organic and perovskite solar cells is summarized and the view regarding the challenges and prospects toward their commercialization is shared. Different printing techniques are first introduced to provide a correlation between material properties and printing mechanisms, and the optimization of ink formulation and film‐formation during large‐area deposition of different functional layers in devices are then discussed. Engineering perspectives are also discussed to analyze the criteria for module design. Finally, perspectives are provided regarding the future development of these solar cells toward practical commercialization. It is believed that this perspective will provide insight into the development of printable solar cells and other electronic devices.

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Efficient carbon electrode perovskite solar cells with robust buffer interfaces

Cited by 17 publications

References 51 publications

Effect of Yttrium-Incorporated TiO₂ Electron Transport Layer on the Photovoltaic Performance of Triple-Cation Perovskite Solar Cells

Effect of Yttrium-Incorporated TiO₂ Electron Transport Layer on the Photovoltaic Performance of Triple-Cation Perovskite Solar Cells

Carbon Electrodes for Perovskite Photovoltaics: Interfacial Properties, Meta‐analysis, and Prospects

Current State and Future Perspectives of Printable Organic and Perovskite Solar Cells

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Efficient carbon electrode perovskite solar cells with robust buffer interfaces

Cited by 17 publications

References 51 publications

Effect of Yttrium-Incorporated TiO2 Electron Transport Layer on the Photovoltaic Performance of Triple-Cation Perovskite Solar Cells

Effect of Yttrium-Incorporated TiO2 Electron Transport Layer on the Photovoltaic Performance of Triple-Cation Perovskite Solar Cells

Carbon Electrodes for Perovskite Photovoltaics: Interfacial Properties, Meta‐analysis, and Prospects

Current State and Future Perspectives of Printable Organic and Perovskite Solar Cells

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Product

Resources

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Effect of Yttrium-Incorporated TiO₂ Electron Transport Layer on the Photovoltaic Performance of Triple-Cation Perovskite Solar Cells

Effect of Yttrium-Incorporated TiO₂ Electron Transport Layer on the Photovoltaic Performance of Triple-Cation Perovskite Solar Cells