Suppression of Sn2+/Sn4+ oxidation in tin-based perovskite solar cells with graphene-tin quantum dots composites in active layer

Mahmoudi, Tahmineh; Rho, Won‐Yeop; Kohan, Mohammadhosein; Im, Yeon-Ho; Mathur, Sanjay; Hahn, Yoon‐Bong

doi:10.1016/j.nanoen.2021.106495

Cited by 60 publications

(51 citation statements)

References 55 publications

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“…The higher water resistance stability of the PCBH film may be attributed to the physical entanglement of the extended flexible alkyl chain, which leads to a denser film. The denser film of PCBH may have increased the electron transport and collection efficiency [ 35 ], as well as suppressing the potential of oxygen injection [ 42 , 43 ]. Therefore, we recorded the XPS Sn 3d spectra of the different perovskite films with the upper fullerene layer removed.…”

Section: Resultsmentioning

confidence: 99%

Fullerene Derivative with Flexible Alkyl Chain for Efficient Tin-Based Perovskite Solar Cells

et al. 2022

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Fullerene derivatives are considered excellent materials for the extraction and transportation of electrons in the production of efficient tin-based perovskite solar cells (TPSCs). However, it is not clear how the molecular structure of fullerene derivatives affects the efficiency and stability of TPSCs. In this study, the effects of fullerene derivatives, (6,6)-phenyl-C61-butyric acid hexyl ester (PCBH) and (6,6)-phenyl-C61-butyric acid methyl ester (PCBM), with different functional groups, on photovoltaic performance were investigated. The flexible alkyl chain of PCBH effectively improved the film morphology and stability, the electron extraction and transport capabilities, and the interface contact of fullerene and perovskite. As a result, the PCBH-based TPSC yielded a higher efficiency, of 9.21%, than the PCBM-based devices (7.54%). More importantly, the PCBH-based films exhibited higher stability and effectively suppressed the oxidation of Sn2+ by inhibiting oxygen permeation. Therefore, the PCBH-based devices exhibited significantly enhanced stability. This result indicates that optimizing the functional group of fullerene derivatives is crucial for improving the efficiency and stability of TPSCs.

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Section: Resultsmentioning

confidence: 99%

Fullerene Derivative with Flexible Alkyl Chain for Efficient Tin-Based Perovskite Solar Cells

et al. 2022

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“…Antioxidant additives which restrain Sn 2+ oxidation during the device manufacturing process might be a way to make tin PSCs that work in a wide range of oxygen concentrations. [ 17,178,179 ]…”

Section: Mitigation Of Hysteresismentioning

confidence: 99%

“…Antioxidant additives which restrain Sn 2þ oxidation during the device manufacturing process might be a way to make tin PSCs that work in a wide range of oxygen concentrations. [17,178,179] Furthermore, while the manufacturing of stable tin PSCs is predicted to be a spicy episode in the future, it has received little attention in previous works, which might be associated to the challenging crystallization rate of tin perovskites. [180] Using Lewis base as additions could be a promising way to build perovskite films with reduced current-voltage hysteresis because this may produce strong interactions with Sn 2þ components to further slowdown the crystallization rate to build sober and void-free tin perovskite layers at large cell areas.…”

Section: Mitigation Challenges and Preventionmentioning

confidence: 99%

Assessment of Lead‐Free Tin Halide Perovskite Solar Cells Using J–V Hysteresis

Dixit

Boro

Ghosh

et al. 2022

Physica Status Solidi (a)

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Perovskite solar cells (PSCs) are considered as one of the most promising alternatives for existing solar cells due to its excellent optoelectronic properties and high efficiency. However, lead has posed a serious issue due to its toxicity which may hinder the commercial use of lead‐based perovskite solar panels/arrays. There has been substantial work progress to find an environment‐friendly alternative metal ion to replace lead. Tin (Sn)‐based PSCs have been successfully synthesized and optimized with high efficiency, making it the most promising active material for lead‐free PSCs. In this review, the role of J–V hysteresis in tin halide PSCs is discussed from the perspective of system structure, working concepts, and interfacial carrier dynamics in detail. The problem of hysteresis in PSCs is closely linked to ion migration, ferroelectric effects, capacitive effects, and trap‐assisted recombination processes, which are highlighted in this review. Further, remediation to reduce the hysteresis by various strategies is explained for tin‐based perovskites. The core focus of this review is to analyze the deterioration of device performance and stability caused due to the generation of defects in the perovskite films, leading to a time‐dependent hysteresis of the current–voltage curves.

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“…From the review, some research gaps were identified. For 1D and 0D nanostructures, more studies can explore their application in solar cells as complete solar absorbers, dopants 193 , composites and heterostructures. Questions regarding defect tolerance, stability, recombination, carrier transport and optoelectronic properties of 1D and 0D tin perovskites in solar cells are open.…”

Section: Research Gapsmentioning

confidence: 99%

A Review of Three-Dimensional Tin Halide Perovskites as Solar Cell Materials

2022

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Thin film solar cell materials such as 3D metal halide perovskites are cheaper alternatives to silicon. Presently, the conversion efficiency of 3D lead halide perovskites is 25.5% ( 2021), which represents an increase of more than 550% since their discovery in 2009 (3.8%). Despite this remarkable progress, concerns about the toxicity of lead have sparked the quest for possible substitutes, in particular, 3D tin halide perovskites. This review covers the general properties of tin halide perovskites, synthesis and stability. It also identifies possible gaps and application beyond solar cells.

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Suppression of Sn2+/Sn4+ oxidation in tin-based perovskite solar cells with graphene-tin quantum dots composites in active layer

Cited by 60 publications

References 55 publications

Fullerene Derivative with Flexible Alkyl Chain for Efficient Tin-Based Perovskite Solar Cells

Fullerene Derivative with Flexible Alkyl Chain for Efficient Tin-Based Perovskite Solar Cells

Assessment of Lead‐Free Tin Halide Perovskite Solar Cells Using J–V Hysteresis

A Review of Three-Dimensional Tin Halide Perovskites as Solar Cell Materials

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