Influence of pyridine-based ligands on photostability of MAPbI3 thin films

Mangrulkar, Mayuribala; Luchkin, Sergey Yu.; Boldyreva, Alexandra; Troshin, Pavel A.; Stevenson, Keith J.

doi:10.1016/j.mencom.2021.04.013

Cited by 4 publications

(2 citation statements)

References 22 publications

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“…Furthermore, nitrogen-containing heterocyclic amines play a great role in improving stability [46]. For instance, the introduction of 4,4 -bipyridine in MAPbI 3 demonstrated complex formation with PbI 2 , thus improving intrinsic stability against illumination [47]. Additionally, it has been shown that the presence of N atoms prevents the loss of volatile species from the perovskite film and acts in a similar way as polymeric passivation coating.…”

Section: N Donor Atom-based Additives 211 Amine Additivesmentioning

confidence: 99%

The Progress of Additive Engineering for CH3NH3PbI3 Photo-Active Layer in the Context of Perovskite Solar Cells

Mangrulkar

Stevenson

2021

Crystals

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Methylammonium lead triiodide (CH3NH3PbI3/MAPbI3) is the most intensively explored perovskite light-absorbing material for hybrid organic–inorganic perovskite photovoltaics due to its unique optoelectronic properties and advantages. This includes tunable bandgap, a higher absorption coefficient than conventional materials used in photovoltaics, ease of manufacturing due to solution processability, and low fabrication costs. In addition, the MAPbI3 absorber layer provides one of the highest open-circuit voltages (Voc), low Voc loss/deficit, and low exciton binding energy, resulting in better charge transport with decent charge carrier mobilities and long diffusion lengths of charge carriers, making it a suitable candidate for photovoltaic applications. Unfortunately, MAPbI3 suffers from poor photochemical stability, which is the main problem to commercialize MAPbI3-based perovskite solar cells (PSCs). However, researchers frequently adopt additive engineering to overcome the issue of poor stability. Therefore, in this review, we have classified additives as organic and inorganic additives. Organic additives are subclassified based on functional groups associated with N/O/S donor atoms; whereas, inorganic additives are subcategorized as metals and non-metal halide salts. Further, we discussed their role and mechanism in terms of improving the performance and stability of MAPbI3-based PSCs. In addition, we scrutinized the additive influence on the morphology and optoelectronic properties to gain a deeper understanding of the crosslinking mechanism into the MAPbI3 framework. Our review aims to help the research community, by providing a glance of the advancement in additive engineering for the MAPbI3 light-absorbing layer, so that new additives can be designed and experimented with to overcome stability challenges. This, in turn, might pave the way for wide scale commercial use.

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Section: N Donor Atom-based Additives 211 Amine Additivesmentioning

confidence: 99%

The Progress of Additive Engineering for CH3NH3PbI3 Photo-Active Layer in the Context of Perovskite Solar Cells

Mangrulkar

Stevenson

2021

Crystals

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“…In the report by Zhang et al [7], the effect of various pyridine derivatives as passivating agents for the perovskite layer and long-term stability of PSCs were investigated. The authors use pyridine, 4-methylpyridine, and 4-tert-butylpyridine as additives to the perovskite solution [42]. The results showed that the use of these pyridine-based additives improve crystallinity of the perovskite layer and its light-harvesting ability, which lead to devices with higher PCEs.…”

Section: Introductionmentioning

confidence: 99%

Passivation of perovskite layer surface states with pyridine in flexible and printed perovskite solar cells

Kakimov¹,

Yerlanuly²,

Akhanuly³

et al. 2022

Flex. Print. Electron.

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Perovskite solar cells, prepared by using solution-processed printing techniques, gained much attention over the past few years and a considerable progress has been achieved in improving the power conversion efficiencies of these devices. Nevertheless, there are still some advancements that can be implemented, especially in terms of passivation of surface defects in the perovskite photoactive layer. Passivation can afford considerable reduction in surface recombination of charge carriers in the photoactive layer and help to obtain devices with better performance. In this work, poly(3-hexylthiophene-2,5-diyl)-based inks with small amount of pyridine as an additive are used to deposit the hole transport layer and simultaneously passivate the surface defects of the perovskite layer in flexible and printed perovskite solar cells. The devices are fabricated on flexible conductive plastic substrates using a slot-die coating method. It is found that 2.5 wt.% pyridine-containing inks for preparing hole transport layer have a positive effect on the performance of resulting perovskite solar cells. On average, around 13% improvement in the power conversion efficiency is observed for the devices with passivation as opposed to the reference devices without passivation. The effect of pyridine passivation on the structural and electronic properties of the perovskite layer on a flexible substrate is studied using experimental and analytical techniques, whereas the computer simulation methods are employed to rule out the possible mechanisms for the performance improvements in the devices with passivation. The approach presented here can be useful for developing simplified protocols for printing of flexible perovskite solar cells with the passivated perovskite layer and improved device efficiency.

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Bidentate ligand application for perovskites passivation

Ugwu,

Conradie

2024

Energy Nexus

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Influence of pyridine-based ligands on photostability of MAPbI3 thin films

Cited by 4 publications

References 22 publications

The Progress of Additive Engineering for CH3NH3PbI3 Photo-Active Layer in the Context of Perovskite Solar Cells

The Progress of Additive Engineering for CH3NH3PbI3 Photo-Active Layer in the Context of Perovskite Solar Cells

Passivation of perovskite layer surface states with pyridine in flexible and printed perovskite solar cells

Bidentate ligand application for perovskites passivation

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