A Cu<sub>3</sub>PS<sub>4</sub> nanoparticle hole selective layer for efficient inverted perovskite solar cells

Yin, Xinxing; McClary, Scott; Song, Zhaoning; Zhao, Dewei; Graeser, Brian K.; Wang, Changlei; Shrestha, Niraj; Wang, Xiaoming; Chen, Cong; Subedi, Kamala Khanal; Ellingson, Randy J.; Tang, Weihua; Yan, Yanfa

doi:10.1039/c8ta12100a

Cited by 35 publications

(28 citation statements)

References 49 publications

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“…Figure f and Table S3, Supporting Information, summarize almost all the works with FF higher than 80% published in recent years. As can be seen from the figure, our work achieved more balanced performance with a simple dosing strategy than most of the other's work …”

Section: Resultsmentioning

confidence: 74%

Synergy of Plasmonic Silver Nanorod and Water for Enhanced Planar Perovskite Photovoltaic Devices

et al. 2019

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Perovskite solar cells (PSCs) have been widely studied during the past 10 years. Albeit the excellent light‐absorption ability, the thickness of the perovskite layer is limited to maintain effective control over morphology and carrier migration. Meanwhile, the quality of perovskite films is a crucial factor affecting the performance of final devices. The traditional one‐step process for preparing triple‐cation perovskite films suffers from small grain size, low crystallization quality, and many surface defects. Herein, in the process of triple‐cation perovskite‐based solar cells, a facile dosing strategy of a silver nanorods (AgNR) aqueous solution into the perovskite precursor is adopted. The localized surface plasmon resonance effect of AgNR enhances the light‐capture ability of the perovskite layer without increasing the thickness. At the same time, the presence of appropriate water helps to obtain high‐quality perovskite films with larger grain size and fewer defects. It is found that the synergy of AgNR and water successfully reduces the defect density and increases mobility significantly. Consequently, a power conversion efficiency of 20.18% and a short‐circuit current (JSC) of 22.08 mA cm−2 is achieved. Meanwhile, an excellent fill factor beyond 82% is reported, which is one of the highest values for triple‐cation hybrid PSCs.

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Section: Resultsmentioning

confidence: 74%

Synergy of Plasmonic Silver Nanorod and Water for Enhanced Planar Perovskite Photovoltaic Devices

et al. 2019

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“…In any case, the charge transport properties of any semiconducting material are strongly dependent on the effective masses of the charge carriers [ 80 , 81 , 82 ]. Table 5 summarizes the effective masses of conduction electrons and holes for A 2 AgCrBr 6 , which were calculated by parabolic fitting of the lower conduction band and the upper valence band centered at the Γ- and L-valleys, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…They are indeed small ( m e * ( up ) (values lie between 0.50 and 0.62 m 0 for all directions), but are not always heavier than those of m h * ( up ). These results suggest that the studied systems might be suitable as hole (and electron) transporting materials due to their high mobility [ 81 , 82 , 83 ]. A similar result was found for Cs 2 AgCrCl 6 (values not given).…”

Section: Resultsmentioning

confidence: 99%

A2AgCrBr6 (A = K, Rb, Cs) and Cs2AgCrX6(X = Cl, I) Double Perovskites: A Transition-Metal-Based Semiconducting Material Series with Remarkable Optics

Varadwaj

2020

Nanomaterials

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With an interest to quest for transition metal-based halogenated double perovskites AB′B″X6 as high performance semiconducting materials for optoelectronics, this study theoretically examined the electronic structures, stability, electronic (density of states and band structures), transport (effective masses of charge carriers), and optical properties (dielectric function and absorption coefficients, etc.) of the series A2AgCrBr6 (A = K, Rb, Cs) using SCAN + rVV10. Our results showed that A2AgCrBr6 (A = Rb, Cs), but not K2AgCrBr6, has a stable perovskite structure, which was revealed using various traditionally recommended geometry-based indices. Despite this reservation, all the three systems were shown to have similar band structures, density of states, and carrier effective masses of conducting holes and electrons, as well as the nature of the real and imaginary parts of their dielectric function, absorption coefficient, refractive index, and photoconductivity spectra. The small changes observed in any specific property of the series A2AgCrBr6 were due to the changes in the lattice properties driven by alkali substitution at the A site. A comparison with the corresponding properties of Cs2AgCrX6 (X = Cl, I) suggested that halogen substitution at the X-site can not only significantly shift the position of the onset of optical absorption found of the dielectric function, absorption coefficient and refractive spectra of Cs2AgCrCl6 and Cs2AgCrI6 toward the high- and low-energy infrared regions, respectively; but that it is also responsible in modifying their stability, electronic, transport, and optical absorption preferences. The large value of the high frequency dielectric constants—together with the appreciable magnitude of absorption coefficients and refractive indices, small values of effective masses of conducting electrons and holes, and the indirect nature of the bandgap transitions, among others—suggested that cubic A2AgCrBr6 (A = Rb, Cs) and Cs2AgCrCl6 may likely be a set of optoelectronic materials for subsequent experimental characterizations.

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“…obtained novel Cu 3 PS 4 nanoparticles as a HTL by using spin coating method for the fabrication of efficient inverted PVSCs with structure of FTO/Cu 3 PS 4 /MA 0.7 FA 0.3 PbI 3 /PCBM/BCP/Ag. [ 194 ] The Cu 3 PS 4 possessed a crystal structure symmetry of Pmn2 1 with calculated effective mass of 0.8 m 0 for holes which is much smaller than that of NiO x (∼1 m 0 ) and Cu delafossites (>3 m 0 ); thus, enable high mobility in Cu 3 PS 4 due to high symmetry as well as d 10 electronic configuration of Cu. [ 195 ] Interestingly, compared with other HTLs, it has a smaller effective mass of holes and a wide‐enough indirect bandgap (2.20 eV) is large enough to enable effective blocking of electrons as well as VBE level of 5.05 eV which are desirable for effective extraction of holes generated in the light absorber layer of perovskite.…”

Section: Mixed Cation Halide Pvscsmentioning

confidence: 99%

“…Finally, the PVSC with Cu 3 PS 4 as a HTL has been achieved a maximum PCE of 18.17% ( J SC = 20.83 mA cm –2 , V OC = 1.07 V and FF = 0.82) with small hysteresis and the device without encapsulation has been retained over 87% of its initial PCE after 60 days in air (temperature of 25°C and RH of 50%) which indicates its decent long‐term stability. [ 194 ]…”

Section: Mixed Cation Halide Pvscsmentioning

confidence: 99%

Inorganic hole transport layers in inverted perovskite solar cells: A review

et al. 2021

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In the past decades, the inverted structure (p‐i‐n structure) perovskite solar cells (PVSCs) have been attracted more by the researchers owing to their ease of fabrication, cost‐effectiveness, lower processing temperature for the fabrication of large scale and flexible devices with negligible J−V hysteresis effects. The hole transporting layer (HTL) as a major served content of PVSCs has significant influence on light harvesting, carrier extraction and transportation, perovskite crystallization, stability and cost. Generally, the organic materials are used as HTLs which have less stability due to their morphology under thermal conditions; thus, leads to change in properties of them. A tantalizing possibility is replacement of p‐type inorganic materials instead of organic materials but the plenty of options are available for inorganic HTLs. However, the development of more variants for inorganic HTL is a major challenge. Till date, many materials have been reported, but their performances have not superseded that of their organic counterparts. Herein, the review on various inorganic HTLs based inverted PVSCs has been reported and analyzed their performances with appropriate properties such as proper energy level and high carrier mobility which are not only assisted with charge transport, but also improved the stability of PVSCs under ambient conditions.

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A Cu₃PS₄ nanoparticle hole selective layer for efficient inverted perovskite solar cells

Abstract: Cu3PS4 nanoparticles are used as a new inorganic hole selective layer (HSL) to fabricate efficient perovskite thin-film solar cells in the inverted device configuration.

Cited by 35 publications

References 49 publications

Synergy of Plasmonic Silver Nanorod and Water for Enhanced Planar Perovskite Photovoltaic Devices

Synergy of Plasmonic Silver Nanorod and Water for Enhanced Planar Perovskite Photovoltaic Devices

A2AgCrBr6 (A = K, Rb, Cs) and Cs2AgCrX6(X = Cl, I) Double Perovskites: A Transition-Metal-Based Semiconducting Material Series with Remarkable Optics

Inorganic hole transport layers in inverted perovskite solar cells: A review

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A Cu3PS4 nanoparticle hole selective layer for efficient inverted perovskite solar cells

Abstract: Cu3PS4 nanoparticles are used as a new inorganic hole selective layer (HSL) to fabricate efficient perovskite thin-film solar cells in the inverted device configuration.

Cited by 35 publications

References 49 publications

Synergy of Plasmonic Silver Nanorod and Water for Enhanced Planar Perovskite Photovoltaic Devices

Synergy of Plasmonic Silver Nanorod and Water for Enhanced Planar Perovskite Photovoltaic Devices

A2AgCrBr6 (A = K, Rb, Cs) and Cs2AgCrX6(X = Cl, I) Double Perovskites: A Transition-Metal-Based Semiconducting Material Series with Remarkable Optics

Inorganic hole transport layers in inverted perovskite solar cells: A review

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A Cu₃PS₄ nanoparticle hole selective layer for efficient inverted perovskite solar cells