Highly efficient, stable and hysteresis‒less planar perovskite solar cell based on chemical bath treated Zn2SnO4 electron transport layer

Sadegh, Faranak; Akın, Seçkin; Moghadam, Majid; Mirkhani, Valiollah; Ruiz‐Preciado, Marco A.; Wang, Zaiwei; Tavakoli, Mohammad Mahdi; Gräetzel, Michael; Hagfeldt, Anders; Tress, Wolfgang

doi:10.1016/j.nanoen.2020.105038

Cited by 93 publications

(62 citation statements)

References 47 publications

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“…Device statistics can be seen in Figure S3, Supporting Information. Despite the remarkable improvement in efficiency up to 40 × 10 ‐3 m of HTM concentration, the overall efficiency led to a partial decrease at concentration of 50 × 10 ‐3 m , which can be ascribed to increased series resistance, [ 23 ] causing a substantial drop in photovoltaic parameters. Consequently, the performance of 6 independent cells prepared in different concentrations demonstrated that 40 × 10 ‐3 m is the best concentration for further device fabrication.…”

Section: Figurementioning

confidence: 99%

Poly(N,N′‐bis‐4‐butylphenyl‐N,N′‐bisphenyl)benzidine‐Based Interfacial Passivation Strategy Promoting Efficiency and Operational Stability of Perovskite Solar Cells in Regular Architecture

2020

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The failure of perovskite solar cells (PSCs) to maintain their maximum efficiency over a prolonged time is due to the deterioration of the light harvesting material under environmental factors such as humidity, heat, and light. Systematically elucidating and eliminating such degradation pathways are critical to imminent commercial use of this technology. Here, a straightforward approach is introduced to reduce the level of defect‐states present at the perovskite and hole transporting layer interface by treating the various perovskite surfaces with poly(N,N′‐bis‐4‐butylphenyl‐N,N′‐bisphenyl)benzidine (polyTPD) molecules. This strategy significantly suppresses the defect‐mediated non‐radiative recombination in the ensuing devices and prevents the penetration of degrading agents into the inner layers by passivating the perovskite surface and grain boundaries. Suppressed non‐radiative recombination and improved interfacial hole extraction result in PSCs with stabilized efficiency exceeding 21% with negligible hysteresis (≈19.1% for control device). Moreover, ultra‐hydrophobic polyTPD passivant considerably alleviates moisture penetration, showing ≈91% retention of initial efficiencies after 300 h storage at high relative humidity of 80%. Similarly, passivated device retains 94% of its initial efficiency after 800 h under operational conditions (maximum power point tracking under continuous illumination at 60 °C). In addition to interfacial passivation function, hole‐selective role of dopant‐free polyTPD is also evaluated and discussed in this study.

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Section: Figurementioning

confidence: 99%

Poly(N,N′‐bis‐4‐butylphenyl‐N,N′‐bisphenyl)benzidine‐Based Interfacial Passivation Strategy Promoting Efficiency and Operational Stability of Perovskite Solar Cells in Regular Architecture

2020

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“…Therefore, recent PSC-based researchers have focused on improving the stability as well as the efficiency [ 103 , 104 ]. Studies have been performed to enhance the crystallinity, using inorganic ions [ 105 , 106 , 107 ], additives [ 108 , 109 , 110 ], new ETLs or HTLs [ 111 , 112 ], and interlayers [ 113 , 114 ].…”

Section: Perovskite Solar Cells With Mofsmentioning

confidence: 99%

Metal-Organic Framework Materials for Perovskite Solar Cells

et al. 2020

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Metal-organic frameworks (MOFs) and MOF-derived materials have been used for several applications, such as hydrogen storage and separation, catalysis, and drug delivery, owing to them having a significantly large surface area and open pore structure. In recent years, MOFs have also been applied to thin-film solar cells, and attractive results have been obtained. In perovskite solar cells (PSCs), the MOF materials are used in the form of an additive for electron and hole transport layers, interlayer, and hybrid perovskite/MOF. MOFs have the potential to be used as a material for obtaining PSCs with high efficiency and stability. In this study, we briefly explain the synthesis of MOFs and the performance of organic and dye-sensitized solar cells with MOFs. Furthermore, we provide a detailed overview on the performance of the most recently reported PSCs using MOFs.

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“…Various approaches based on this principle have so far been developed and employed in PSCs. [38][39][40][41][42] Especially ammonium halides have demonstrated a remarkable potential owing to their tunable electro-chemical and optical properties, for instance, their interaction with lead cations, hydrophobicity and optical behavior, as well as low production costs and solution processability. [26,43,44] A general formula for an organic ammonium-based passivation agent can be abbreviated as R-N 1 R 2 R 3 R + X − (Figure 1a), where R and X represent an organic moiety and monovalent halide anion, respectively.…”

Section: Introductionmentioning

confidence: 99%

Organic Ammonium Halide Modulators as Effective Strategy for Enhanced Perovskite Photovoltaic Performance

et al. 2021

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Despite rapid improvements in efficiency, long-term stability remains a challenge limiting the future up-scaling of perovskite solar cells (PSCs). Although several approaches have been developed to improve the stability of PSCs, applying ammonium passivation materials in bilayer configuration PSCs has drawn intensive research interest due to the potential of simultaneously improving long-term stability and boosting power conversion efficiency (PCE). This review focuses on the recent advances of improving n-i-p PSCs photovoltaic performance by employing ammonium halide-based molecular modulators. The first section briefly summarizes the challenges of perovskite materials by introducing the degradation mechanisms associated with the hygroscopic nature and ion migration issues. Then, recent reports regarding the roles of overlayers formed from ammonium-based passivation agents are discussed on the basis of ligand and halide effects. This includes both the formation of 2D perovskite films as well as purely organic passivating layers. Finally, the last section provides future perspectives on the use of organic ammonium halides within bilayer-architecture PSCs to improve the photovoltaic performances. Overall, this review provides a roadmap on current demands and future research directions of molecular modulators to address the critical limitations of PSCs, to mitigate the major barriers on the pathway toward future up-scaling applications.

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Highly efficient, stable and hysteresis‒less planar perovskite solar cell based on chemical bath treated Zn2SnO4 electron transport layer

Cited by 93 publications

References 47 publications

Poly(N,N′‐bis‐4‐butylphenyl‐N,N′‐bisphenyl)benzidine‐Based Interfacial Passivation Strategy Promoting Efficiency and Operational Stability of Perovskite Solar Cells in Regular Architecture

Poly(N,N′‐bis‐4‐butylphenyl‐N,N′‐bisphenyl)benzidine‐Based Interfacial Passivation Strategy Promoting Efficiency and Operational Stability of Perovskite Solar Cells in Regular Architecture

Metal-Organic Framework Materials for Perovskite Solar Cells

Organic Ammonium Halide Modulators as Effective Strategy for Enhanced Perovskite Photovoltaic Performance

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