Complementary bulk and surface passivations for highly efficient perovskite solar cells by gas quenching

Tang, Shi; Bing, Jueming; Zheng, Jianghui; Tang, Jianbo; Li, Yong; Mayyas, Mohannad; Cho, Yongyoon; Jones, Timothy W.; Yang, Terry Chien‐Jen; Lin, Yuan; Tebyetekerwa, Mike; Nguyen, Hieu T.; Nielsen, Michael P.; Ekins-Daukes, N.J.; Kalantar‐zadeh, Kourosh; Wilson, Gregory J.; McKenzie, David R.; Huang, Shujuan; Ho‐Baillie, Anita

doi:10.1016/j.xcrp.2021.100511

Cited by 21 publications

(17 citation statements)

References 47 publications

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“…Figure 5b illustrates the blade-coating of a perovskite film, where a blade swipes the perovskite ink over the substrate. Usually, a nitrogen flow on the perovskite layer is used to accelerate the drying process (this is often referred to as gas quenching which is a desirable method that does not consume antisolvents and is compatible with large-area deposition methods [129][130][131][132] ). The thickness of the perovskite layer can be tuned through the concentration of the perovskite precursor, the distance between the blade and the substrate, and the blade-coating speed.…”

Section: Solution-based Methodsmentioning

confidence: 99%

Monolithic Perovskite‐Silicon Tandem Solar Cells: From the Lab to Fab?

Yang

et al. 2022

Advanced Materials

121

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accounts for only ≈3% of global electricity generation. [1] However, PV is experiencing an accelerated growth globally with >130 GW installed in 2020, an acceleration that should continue in the future to provide 20-30% of the global electricity on the 2050 horizon. [2] The key to materializing this ambitious goal is to reduce the cost of PV-generated electricity to make solar energy significantly cheaper than that produced by fossil fuels, and to promote the implementation of storage technologies. [3] Currently, the major cost component of a PV system stems from the balance-ofsystems (BOS). [4] The BOS refers to all the components of a PV system other than the solar module, including wiring, inverters, land, installation, labor, etc. With cell costs typically accounting for less than 20% of the total module cost (and module costs typically account for around 40% at the system level), [4,5] increasing power conversion efficiency at the cell and module level is the most efficient way to reduce the levelized cost of electricity (LCOE), provided this efficiency gain comes at affordable manufacturing costs. [6] Increasing the solar module efficiency is even more important for residential rooftops, facades, or other applications where This review focuses on monolithic 2-terminal perovskite-silicon tandem solar cells and discusses key scientific and technological challenges to address in view of an industrial implementation of this technology. The authors start by examining the different crystalline silicon (c-Si) technologies suitable for pairing with perovskites, followed by reviewing recent developments in the field of monolithic 2-terminal perovskite-silicon tandems. Factors limiting the power conversion efficiency of these tandem devices are then evaluated, before discussing pathways to achieve an efficiency of >32%, a value that small-scale devices will likely need to achieve to make tandems competitive. Aspects related to the upscaling of these device active areas to industryrelevant ones are reviewed, followed by a short discussion on module integration aspects. The review then focuses on stability issues, likely the most challenging task that will eventually determine the economic viability of this technology. The final part of this review discusses alternative monolithic perovskite-silicon tandem designs. Finally, key areas of research that should be addressed to bring this technology from the lab to the fab are highlighted.

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Section: Solution-based Methodsmentioning

confidence: 99%

Monolithic Perovskite‐Silicon Tandem Solar Cells: From the Lab to Fab?

Yang

et al. 2022

Advanced Materials

121

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“…In addition, their processing is economical and utilizes simple solution treatments [7,8]. The power conversion efficiency (PCE) of perovskite solar cells (PSCs) has increased dramatically from 3.8% in 2009 to 25.5% [9,10]. Lead hybrid perovskites have the outstanding photovoltaic properties and a high PCE.…”

Section: Introductionmentioning

confidence: 99%

Dimension-Dependent Bandgap Narrowing and Metallization in Lead-Free Halide Perovskite Cs3Bi2X9 (X = I, Br, and Cl) under High Pressure

Xiang

Zhang

et al. 2021

Nanomaterials

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Low-toxicity, air-stable cesium bismuth iodide Cs3Bi2X9 (X = I, Br, and Cl) perovskites are gaining substantial attention owing to their excellent potential in photoelectric and photovoltaic applications. In this work, the lattice constants, band structures, density of states, and optical properties of the Cs3Bi2X9 under high pressure perovskites are theoretically studied using the density functional theory. The calculated results show that the changes in the bandgap of the zero-dimensional Cs3Bi2I9, one-dimensional Cs3Bi2Cl9, and two-dimensional Cs3Bi2Br9 perovskites are 3.05, 1.95, and 2.39 eV under a pressure change from 0 to 40 GPa, respectively. Furthermore, it was found that the optimal bandgaps of the Shockley–Queisser theory for the Cs3Bi2I9, Cs3Bi2Br9, and Cs3Bi2Cl9 perovskites can be reached at 2–3, 21–26, and 25–29 GPa, respectively. The Cs3Bi2I9 perovskite was found to transform from a semiconductor into a metal at a pressure of 17.3 GPa. The lattice constants, unit-cell volume, and bandgaps of the Cs3Bi2X9 perovskites exhibit a strong dependence on dimension. Additionally, the Cs3Bi2X9 perovskites have large absorption coefficients in the visible region, and their absorption coefficients undergo a redshift with increasing pressure. The theoretical calculation results obtained in this work strengthen the fundamental understanding of the structures and bandgaps of Cs3Bi2X9 perovskites at high pressures, providing a theoretical support for the design of materials under high pressure.

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“…[15] Br À anions had a strong passivation effect on Pb interstitial and halide vacancies by forming robust ionic bonds with Pb 2 + and hydrogen bonds (NÀ H•••Br) with MA + /FA + cations. [16] Surface passivation is another effective protocol to reduce defects present at the surface of perovskites and suppress undesirable ion movement. [17][18][19] The defects present on the perovskite surface accelerate the decomposition pathways and promote nonradiative recombination that limits performance and reliability.…”

Section: Introductionmentioning

confidence: 99%

Reducing the Trap Density in MAPbI₃ Based Perovskite Solar Cells via Bromide Substitution

et al. 2022

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The past decade has witnessed tremendous advancement in the field of halide perovskite (PSK) as a choice of material for high-performing solar cells fabrication. Here, we investigate the impact of the halide exchange through N-bromosuccinimide (NBS) treatment in MAPbI 3 based solar cells. We observed the partial halide exchange (I À to Br À ) or the filling of halide (X À ) vacancy upon treatment of different NBS concentrations experimentally by spectroscopic and diffractogram studies. We noted that halide exchange impacts the crystallization and is beneficial in improving the photovoltaic performance. The optimized 0.5 % NBS treated PSC exhibited a power conversion efficiency of 17.87 % due to an increment in open-circuit voltage (V oc ) and short circuit current (J sc ). We noted improved perovskite crystal growth upon Br À substitution; eventually, it helps to lower the trap density, reducing non-radiative recombination and renders the enhancement of long-term stability of PSC.

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Complementary bulk and surface passivations for highly efficient perovskite solar cells by gas quenching

Cited by 21 publications

References 47 publications

Monolithic Perovskite‐Silicon Tandem Solar Cells: From the Lab to Fab?

Monolithic Perovskite‐Silicon Tandem Solar Cells: From the Lab to Fab?

Dimension-Dependent Bandgap Narrowing and Metallization in Lead-Free Halide Perovskite Cs3Bi2X9 (X = I, Br, and Cl) under High Pressure

Reducing the Trap Density in MAPbI₃ Based Perovskite Solar Cells via Bromide Substitution

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Complementary bulk and surface passivations for highly efficient perovskite solar cells by gas quenching

Cited by 21 publications

References 47 publications

Monolithic Perovskite‐Silicon Tandem Solar Cells: From the Lab to Fab?

Monolithic Perovskite‐Silicon Tandem Solar Cells: From the Lab to Fab?

Dimension-Dependent Bandgap Narrowing and Metallization in Lead-Free Halide Perovskite Cs3Bi2X9 (X = I, Br, and Cl) under High Pressure

Reducing the Trap Density in MAPbI3 Based Perovskite Solar Cells via Bromide Substitution

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Reducing the Trap Density in MAPbI₃ Based Perovskite Solar Cells via Bromide Substitution