Transition metal carbides (MXenes) for efficient NiO-based inverted perovskite solar cells

Saranin, Danila; Pescetelli, Sara; Pazniak, Hanna; Rossi, Daniele; Liedl, A.; Yakusheva, Anastasia; Luchnikov, Lev; Podgorny, D. A.; Gostischev, Pavel; Didenko, S.; Тамеев, А. Р.; Lizzit, Daniel; Angelucci, M.; Cimino, R.; Larciprete, R.; Agresti, Antonio; Carlo, Aldo Di

doi:10.1016/j.nanoen.2021.105771

Cited by 86 publications

(67 citation statements)

References 47 publications

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“…In the present work, we focussed our attention on the 2D titanium carbide Ti

MXene flakes, where T

indicate the functional groups (-OH, =O, -F) which terminate the flakes after etching procedures or post-processing [ 22 ]. Such choice being motivated by the superior performance observed in PSCs based on PV with added Ti

flakes [ 23 , 24 ]. Our objective was to exclude any detrimental effect of the dispersed MXene flakes on the intrinsic PV behaviour and hopefully reveal possible beneficial influence on the material stability.…”

Section: Introductionmentioning

confidence: 99%

Mixed Cation Halide Perovskite under Environmental and Physical Stress

et al. 2021

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Despite the ideal performance demonstrated by mixed perovskite materials when used as active layers in photovoltaic devices, the factor which still hampers their use in real life remains the poor stability of their physico-chemical and functional properties when submitted to prolonged permanence in atmosphere, exposure to light and/or to moderately high temperature. We used high resolution photoelectron spectroscopy to compare the chemical state of triple cation, double halide Csx(FA0.83MA0.17)(1−x)Pb(I0.83Br0.17)3 perovskite thin films being freshly deposited or kept for one month in the dark or in the light in environmental conditions. Important deviations from the nominal composition were found in the samples aged in the dark, which, however, did not show evident signs of oxidation and basically preserved their own electronic structures. Ageing in the light determined a dramatic material deterioration with heavily perturbed chemical composition also due to reactions of the perovskite components with surface contaminants, promoted by the exposure to visible radiation. We also investigated the implications that 2D MXene flakes, recently identified as effective perovskite additive to improve solar cell efficiency, might have on the labile resilience of the material to external agents. Our results exclude any deleterious MXene influence on the perovskite stability and, actually, might evidence a mild stabilizing effect for the fresh samples, which, if doped, exhibited a lower deviation from the expected stoichiometry with respect to the undoped sample. The evolution of the undoped perovskites under thermal stress was studied by heating the samples in UHV while monitoring in real time, simultaneously, the behaviour of four representative material elements. Moreover, we could reveal the occurrence of fast changes induced in the fresh material by the photon beam as well as the enhanced decomposition triggered by the concurrent X-ray irradiation and thermal heating.

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“…In the present work, we focussed our attention on the 2D titanium carbide Ti

MXene flakes, where T

Section: Introductionmentioning

confidence: 99%

Mixed Cation Halide Perovskite under Environmental and Physical Stress

et al. 2021

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“…For example, Bi compounds, namely, Bi 2 O 2 Se nanoflakes, have recently been used as hydrophobic and smooth ETLs to improve the electron collection/transport while promoting the formation of large perovskite crystals, achieving Z value of up to 19.06%. 1120 namely, 6R-TaS 2 flakes, were exfoliated and incorporated as a buffer layer in inverted PSCs to simultaneously enhance their Z, lifetime, and thermal stability. 1127 In detail, a thin buffer layer of 6R-TaS 2 flakes on top of the ETL facilitated electron extraction, allowing the device to reach the maximum Z value of 18.45% (+12% vs. the reference cell).…”

Section: Etlsmentioning

confidence: 99%

Solution-processed two-dimensional materials for next-generation photovoltaics

et al. 2021

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“…PSCs having NiO/MAPbI 3 /PCBM/bathocuproine (BCP)/Ag structure were fabricated with Ti 3 C 2 T x MXene doped in both PCBM and perovskite layer ( Figure 6 a). Thanks to the optimized energy level alignment ( Figure 6 b) and suppressed trap states, the MXene-based improvised devices achieved superior performance, with 19.2% PCE and significantly improved stabilized power output as compared to control devices [ 78 ].…”

Section: Applications Of Mxenes In Pscsmentioning

confidence: 99%

Application of MXenes in Perovskite Solar Cells: A Short Review

et al. 2021

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Application of MXene materials in perovskite solar cells (PSCs) has attracted considerable attention owing to their supreme electrical conductivity, excellent carrier mobility, adjustable surface functional groups, excellent transparency and superior mechanical properties. This article reviews the progress made so far in using Ti3C2TxMXene materials in the building blocks of perovskite solar cells such as electrodes, hole transport layer (HTL), electron transport layer (ETL) and perovskite photoactive layer. Moreover, we provide an outlook on the exciting opportunities this recently developed field offers, and the challenges faced in effectively incorporating MXene materials in the building blocks of PSCs for better operational stability and enhanced performance.

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Transition metal carbides (MXenes) for efficient NiO-based inverted perovskite solar cells

Cited by 86 publications

References 47 publications

Mixed Cation Halide Perovskite under Environmental and Physical Stress

Mixed Cation Halide Perovskite under Environmental and Physical Stress

Solution-processed two-dimensional materials for next-generation photovoltaics

Application of MXenes in Perovskite Solar Cells: A Short Review

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