Perovskite solar cell based on network nanoporous layer consisted of TiO2 nanowires and its interface optimization

Tao, Hong; Ke, Weijun; Wang, Jing; Liu, Qin; Wan, Jiawei; Yang, Guang; Fang, Guojia

doi:10.1016/j.jpowsour.2015.05.007

Cited by 46 publications

(25 citation statements)

References 44 publications

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“…The line in Figure 2b shows a linear fit of the experimental data, where the intercept on y-axis and the slope yields the values of R S and m, respectively. [25,26] The values of R S obtained for the device A and B are 8.1 and 6.7 Ω, respectively. As both devices were fabricated in a same batch using the same architecture, i.e., compact layer, blocking layer and HTM, the apparent difference in the value of R S could be attributed to the variation in the inherent conductivity of perovskite material.…”

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confidence: 94%

The Role of Rubidium in Multiple‐Cation‐Based High‐Efficiency Perovskite Solar Cells

et al. 2017

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Perovskite solar cells (PSCs) based on cesium (Cs)‐ and rubidium (Rb)‐containing perovskite films show highly reproducible performance; however, a fundamental understanding of these systems is still emerging. Herein, this study has systematically investigated the role of Cs and Rb cations in complete devices by examining the transport and recombination processes using current–voltage characteristics and impedance spectroscopy in the dark. As the credibility of these measurements depends on the performance of devices, this study has chosen two different PSCs, (MAFACs)Pb(IBr)3 (MA = CH3NH3+, FA = CH(NH2)2+) and (MAFACsRb)Pb(IBr)3, yielding impressive performances of 19.5% and 21.1%, respectively. From detailed studies, this study surmises that the confluence of the low trap‐assisted charge‐carrier recombination, low resistance offered to holes at the perovskite/2,2′,7,7′‐tetrakis(N,N‐di‐p‐methoxyphenylamine)‐9,9‐spirobifluorene interface with a low series resistance (Rs), and low capacitance leads to the realization of higher performance when an extra Rb cation is incorporated into the absorber films. This study provides a thorough understanding of the impact of inorganic cations on the properties and performance of highly efficient devices, and also highlights new strategies to fabricate efficient multiple‐cation‐based PSCs.

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confidence: 94%

The Role of Rubidium in Multiple‐Cation‐Based High‐Efficiency Perovskite Solar Cells

et al. 2017

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“…The conventional structure of DSSC contains mesoporous TiO 2 layer. As a result, the initial normal structure of PSCs also contained mesoporous metal oxide layer and the mesoporous structures included nonarods, nanotubes, and nanowires . In 2012, Snaith's group demonstrated that perovskites were able to transport both electrons and holes, which was different from the organic dye sensitizer of DSSC .…”

Section: Configurations Of Sno2‐based Pscsmentioning

confidence: 99%

SnO₂‐Based Perovskite Solar Cells: Configuration Design and Performance Improvement

Liu

Wang

et al. 2019

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Organic‐inorganic hybrid perovskite solar cells (PSCs) have developed rapidly in recent years owing to the low cost and high power conversion efficiency achieved. The excellent performance of PSCs is attributed to the superior electrical properties of each layer, including the electron transport layer (ETL), light‐harvest layer, hole transport layer. As one of the most promising ETL materials for PSCs, SnO2 shows excellent transmission, an appropriate energy band gap, a deep conduction band level, and high electron mobility, leading to efficient electron extraction and transport. Here, recent advancements in the PSCs with SnO2 ETLs and endeavors aimed at improving the performance of this photovoltaic device are reviewed. Several typical configurations of SnO2 based PSCs are discussed, including the planar structure, mesoporous structure, inverted structure and flexible PSCs. The efforts of modification and composite SnO2 with other metal oxides are also assessed. Finally, an overview of the perspectives and challenges for the future of SnO2 based PSCs is provided.

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“…Meso‐ and nanoporous structures are often realized by spin‐coating of a dispersion of particles onto a compact contact layer. The used particles range from the widely used round meso‐ or nanoscopic particles to nanowires or nanosheets . Nanostructured contacts, scaffolds, and templates are produced by a variety of methods ranging from wet and electrochemical methods such as hydrothermal growth or anodic oxidation to physical vapor deposition (PVD) and pulsed laser deposition (PLD) …”

Section: Architectures/types Of Nanostructured Perovskite Light Harvementioning

confidence: 99%

Stability and Performance of Nanostructured Perovskites for Light‐Harvesting Applications

et al. 2019

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transitions between those occurring upon heating. The most-studied compound, methylammonium lead trihalide, features an optical bandgap between 1.5 and 2.3 eV depending on the halide content. After combining the perovskite compound as active material with Spiro-MeOTAD as solid-state hole-transporting medium, excellent device performances have been demonstrated with ever increasing efficiencies. [8] Recent work on alternative halide perovskites have shown high photovoltaic conversion efficiencies that indicate the perspective of surmounting 30% of efficiency by a single-junction solar cell. In fact, even approaching the Shockley-Quaisser-limit for a single-junction direct bandgap photo voltaic cell was reported to be within the reach of perovskite solar cells. [9,10] Thus, with the strong absorption of radiation in the solar spectrum, a low nonradiative carrier recombination rate and the intrinsic selforganization potential of perovskite compounds that renders them easy to fabricate by different methods ranging from wet chemistry to vapor deposition, the obvious question seems: why is the perovskite solar cell not yet on the market?Unfortunately, the perovskite material itself faces intrinsic problems concerning its stability against ultraviolet radiation and, specifically, concerning its limited service life time and rapid degradation in environments containing moisture. Additionally, for the prototypical methylammonium lead trihalide, the lead content naturally raises questions concerning environmental issues. Moreover, changing for a new material for producing solar cells or modules presents a high barrier in itself, as seen for the past 30 years of development of materials and approaches for energy harvesting that are alternative to Si-based technologies.Based on the properties of halide perovskite materials, on the environmental and boundary conditions given by the integration into a photovoltaic cell and on the requirements set by the producers of commercial devices, the following issues seem prevalent and shall be addressed in this article: -Thin film deposition is required for cost-efficient furbishing of tandem solar cells that can be combined with Si technologies. -The service life time and stability in natural environments including the presence of moisture need to be enhanced, particularly for thin films. -The production method needs to have scale-up potential.Halide perovskites in general and organometal-halide perovskites in particular have become an intensely researched topic due their excellent optical properties, cheap production costs, and easy fabrication procedures. A high absorption coefficient, paired with a direct bandgap and a wide variety of accessible deposition method, makes these perovskites an excellent materials class for use in a plethora of applications, ranging from solar cells to light-emitting diodes, and image sensors with architectures of varying length scales ranging from simple thin-film solid-state solar cells to highly ordered nanostructured solar cells and sensors. A downs...

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Perovskite solar cell based on network nanoporous layer consisted of TiO2 nanowires and its interface optimization

Cited by 46 publications

References 44 publications

The Role of Rubidium in Multiple‐Cation‐Based High‐Efficiency Perovskite Solar Cells

The Role of Rubidium in Multiple‐Cation‐Based High‐Efficiency Perovskite Solar Cells

SnO₂‐Based Perovskite Solar Cells: Configuration Design and Performance Improvement

Stability and Performance of Nanostructured Perovskites for Light‐Harvesting Applications

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Perovskite solar cell based on network nanoporous layer consisted of TiO2 nanowires and its interface optimization

Cited by 46 publications

References 44 publications

The Role of Rubidium in Multiple‐Cation‐Based High‐Efficiency Perovskite Solar Cells

The Role of Rubidium in Multiple‐Cation‐Based High‐Efficiency Perovskite Solar Cells

SnO2‐Based Perovskite Solar Cells: Configuration Design and Performance Improvement

Stability and Performance of Nanostructured Perovskites for Light‐Harvesting Applications

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SnO₂‐Based Perovskite Solar Cells: Configuration Design and Performance Improvement