Improved environmental stability of HTM free perovskite solar cells by a modified deposition route

Safari, Zeinab; Zarandi, Mahmood Borhani; Nateghi, Mohammad Reza

doi:10.1007/s11696-019-00818-6

Cited by 8 publications

(3 citation statements)

References 54 publications

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“…Moreover, multiple dipping methods have also been developed. In the two‐step immersion method, Nateghi et al [ 64 ] immersed the inorganic film in organic solution, and after sintering, the immersing step was repeated to reduce the PbI 2 residue and the carrier recombination.…”

Section: Methods and Reaction Principlementioning

confidence: 99%

Review of Two‐Step Method for Lead Halide Perovskite Solar Cells

et al. 2022

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The quality of the perovskite film is crucial to the technological breakthrough of perovskite solar cells (PSCs). The two‐step method can facilitate the formation of a perovskite film with high quality and reproducibility. Many milestones have been made in the development of hybrid lead halide PSCs by using the two‐step method, which has a significant impact on their practical application. Herein, the reaction mechanism of the two‐step method including two‐step immersion method and two‐step spin coating method is summarized. The strategies such as component engineering, solvent engineering, and additive engineering of the two‐step method in preparing high‐quality films are introduced systematically and in detail. In addition, current issues of the two‐step method and its applications in lead‐free PSCs, all‐inorganic PSCs, large areas, and tandems are introduced and some suggestions are put forward for future research.

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Section: Methods and Reaction Principlementioning

confidence: 99%

Review of Two‐Step Method for Lead Halide Perovskite Solar Cells

et al. 2022

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“…Among the various deposition methods indeed, vapor-assisted solution processing (VASP) [22], physical vapor deposition (PVD) [23], single step route [24] and two-step [25,26] or sequential deposition route through the solution of depositing metal halide perovskite films, the solution processing is simpler, cheaper, and more suitable for large scale production [27,28]. However, in this method, there are many structural defects along the grain boundaries of polycrystalline perovskite films [29,30,31,32].…”

Section: Introductionmentioning

confidence: 99%

Optimizing the Interface between Hole Transporting Material and Nanocomposite for Highly Efficient Perovskite Solar Cells

et al. 2019

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The performances of organometallic halide perovskite-based solar cells severely depend on the device architecture and the interface between each layer included in the device stack. In particular, the interface between the charge transporting layer and the perovskite film is crucial, since it represents both the substrate where the perovskite polycrystalline film grows, thus directly influencing the active layer morphology, and an important site for electrical charge extraction and/or recombination. Here, we focus on engineering the interface between a perovskite-polymer nanocomposite, recently developed by our group, and different commonly employed polymeric hole transporters, namely PEDOT: PSS [poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)], PEDOT, PTAA [poly(bis 4-phenyl}{2,4,6-trimethylphenyl}amine)], Poly-TPD [Poly(N,N′-bis(4-butylphenyl)-N,N′-bis(phenyl)-benzidine] Poly-TPD, in inverted planar perovskite solar cell architecture. The results show that when Poly-TPD is used as the hole transfer material, perovskite film morphology improved, suggesting an improvement in the interface between Poly-TPD and perovskite active layer. We additionally investigate the effect of the Molecular Weight (MW) of Poly-TPD on the performance of perovskite solar cells. By increasing the MW, the photovoltaic performances of the cells are enhanced, reaching power conversion efficiency as high as 16.3%.

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“…Its composition is a very important factor and until recently pure-MA-based perovskites were considered unstable. [14,15] Recently, however, Holzhey et al, demonstrated that solution-processed MAPbI 3 -based solar cells exhibited operational stability in excess of 500 h under illumination when kept at 65 C. [16] It has been found that the residual solvent in the perovskite layer, [17] crystal structure, [18] grain size, [19] defect density, [20,21] and compactness of the film [22] affect the degradation of the perovskite layer. [23] Therefore, the preparation method is an important factor in obtaining stable perovskite films.…”

Section: Introductionmentioning

confidence: 99%

Crystal Reorientation and Amorphization Induced by Stressing Efficient and Stable P–I–N Vacuum‐Processed MAPbI₃ Perovskite Solar Cells

Kaya

Zanoni

Palazón

et al. 2021

Adv Energy and Sustain Res

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Herein, the long‐term stability of vacuum‐deposited methylammonium lead iodide (MAPbI3) perovskite solar cells (PSCs) with power conversion efficiencies (PCEs) of around 19% is evaluated. A low‐temperature atomic layer deposition (ALD) Al2O3 coating is developed and used to protect the MAPbI3 layers and the solar cells from environmental agents. The ALD encapsulation enables the MAPbI3 to be exposed to temperatures as high as 150 °C for several hours without change in color. It also improves the thermal stability of the solar cells, which maintain 80% of the initial PCEs after aging for ≈40 and 37 days at 65 and 85 °C, respectively. However, room‐temperature operation of the solar cells under 1 sun illumination leads to a loss of 20% of their initial PCE in 230 h. Due to the very thin ALD Al2O3 encapsulation, X‐ray diffraction can be performed on the MAPbI3 films and completed solar cells before and after the different stress conditions. Surprisingly, it is found that the main effect of light soaking and thermal stress is a crystal reorientation with respect to the substrate from (002) to (202) of the perovskite layer, and that this reorientation is accelerated under illumination.

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Improved environmental stability of HTM free perovskite solar cells by a modified deposition route

Cited by 8 publications

References 54 publications

Review of Two‐Step Method for Lead Halide Perovskite Solar Cells

Review of Two‐Step Method for Lead Halide Perovskite Solar Cells

Optimizing the Interface between Hole Transporting Material and Nanocomposite for Highly Efficient Perovskite Solar Cells

Crystal Reorientation and Amorphization Induced by Stressing Efficient and Stable P–I–N Vacuum‐Processed MAPbI₃ Perovskite Solar Cells

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Improved environmental stability of HTM free perovskite solar cells by a modified deposition route

Cited by 8 publications

References 54 publications

Review of Two‐Step Method for Lead Halide Perovskite Solar Cells

Review of Two‐Step Method for Lead Halide Perovskite Solar Cells

Optimizing the Interface between Hole Transporting Material and Nanocomposite for Highly Efficient Perovskite Solar Cells

Crystal Reorientation and Amorphization Induced by Stressing Efficient and Stable P–I–N Vacuum‐Processed MAPbI3 Perovskite Solar Cells

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Crystal Reorientation and Amorphization Induced by Stressing Efficient and Stable P–I–N Vacuum‐Processed MAPbI₃ Perovskite Solar Cells