Defects and stability of perovskite solar cells: a critical analysis

Duan, Leiping; Uddin, Ashraf

doi:10.1039/d1qm01250a

Cited by 76 publications

(59 citation statements)

References 168 publications

(179 reference statements)

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“…[ 77 ] In the future researchers should focus on developing new ETL materials with higher carrier mobility and energy level matching between the materials for the improvement of PSCs with better stability and performance. [ 100 ]…”

Section: Discussionmentioning

confidence: 99%

Progress and Challenges of SnO₂ Electron Transport Layer for Perovskite Solar Cells: A Critical Review

Uddin

2022

Solar RRL

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Organic inorganic halide perovskites have drawn great attention in the past decade, due to their superior photovoltaic performance with an efficiency over 25%. For planar heterojunction structure perovskite solar cells (PSCs) tin oxide based electron transport layers (ETLs) have become one of the most suitable candidates to replace titanium oxide to make flexible devices because of their low‐temperature processing. The deposition techniques of SnO2 can be categorized into chemical deposition, such as sol‐gel, chemical bathing or atomic layer deposition, and physical deposition, such as thermal evaporation or sputtering. Depending on the deposition technique, defects, and morphology in the SnO2 layer may vary drastically, leading to poor performance of PSCs. In this review, we have provided a comprehensive picture of the recent progress and challenges of different SnO2 ETL deposition techniques and the performance of PSC devices. The additional modifications on SnO2 mentioned in this article are also effective ways to eliminate the intrinsic defects in the film. The drawbacks and benefits of SnO2 ETLs and the corresponding actions for this are also discussed. We hope this review will help with the comprehensive understanding of the relationship between the property of SnO2 and its structure of ETLs to enhance PSCs' performance.

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Section: Discussionmentioning

confidence: 99%

Progress and Challenges of SnO₂ Electron Transport Layer for Perovskite Solar Cells: A Critical Review

Uddin

2022

Solar RRL

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“…9 b that the PEO-modified device was able to retain about 80% of its initial PCE for up to 140 h of storage in an unencapsulated state while that of the control device dropped below 80% after just about 85 h. These results indicate that the PEO additive improves the light and moisture-induced degradation resistance of PSC. The possible reason behind the improved stability for the PEO-modified PSC is that the PEO particles slowed down the morphological changes in the perovskite film and led to reduction in charge trapping centers due to reduced grain boundary area resulting from the defect healing ability of PEO 29 , 53 , 54 . It is important to note that the enhanced stability of the PEO-modified PSCs can promote the scale-up of PSCs via spraying with device area of over 1 cm 2 .…”

Section: Performance Characteristics Of the Pscmentioning

confidence: 99%

Effects of polyethylene oxide particles on the photo-physical properties and stability of FA-rich perovskite solar cells

Koech

Olanrewaju

Ichwani

et al. 2022

Sci Rep

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In this paper, we use Polyethylene Oxide (PEO) particles to control the morphology of Formamidinium (FA)-rich perovskite films and achieve large grains with improved optoelectronic properties. Consequently, a planar perovskite solar cell (PSC) is fabricated with additions of 5 wt% of PEO, and the highest PCE of 18.03% was obtained. This solar cell is also shown to retain up to 80% of its initial PCE after about 140 h of storage under the ambient conditions (average relative humidity of 62.5 ± 3.25%) in an unencapsulated state. Furthermore, the steady-state PCE of the PEO-modified PSC device remained stable for long (over 2500 s) under continuous illumination. This addition of PEO particles is shown to enable the tuning of the optoelectronic properties of perovskite films, improvements in the overall photophysical properties of PSCs, and an increase in resistance to the degradation of PSCs.

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“…The conductivity of polycrystalline silicon is significantly influenced by the potential barrier, since the effective mobility of carriers is figured out by the potential barrier, as shown in Equations (1) and (2) [ 11 , 12 , 13 , 14 , 15 , 16 ].

…”

Section: Discussionmentioning

confidence: 99%

Electron Radiation Effects of Grain-Boundary Evolution on Polycrystalline Silicon in MEMS

2022

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A specimen observed with a transmission electron microscope (TEM) was processed by focused ion beam (FIB) from a surface-micromachined polycrystalline silicon MEMS structure. Electron irradiation and in situ observation were performed on a selected grain boundary in the specimen. The grain boundary was observed and located by using lattice-oriented selective TEM photography. An evolution progress of amorphization of small silicon grain within the grain boundary and recrystallization of amorphous silicon were observed. A silicon grain turned into several smaller bar grains within the grain boundary. The mechanism of grain-boundary evolution inducing a change of conductivity of polycrystalline silicon has been revealed. The conductivity of polycrystalline silicon influenced by electron irradiation could be attributed to the change of grain boundary.

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Defects and stability of perovskite solar cells: a critical analysis

Abstract: Metal halide perovskite solar cells (PSCs) continue to improve their power conversion efficiency by over 25.5% which is at the same level as silicon solar cells. The stability of perovskite...

Cited by 76 publications

References 168 publications

Progress and Challenges of SnO₂ Electron Transport Layer for Perovskite Solar Cells: A Critical Review

Progress and Challenges of SnO₂ Electron Transport Layer for Perovskite Solar Cells: A Critical Review

Effects of polyethylene oxide particles on the photo-physical properties and stability of FA-rich perovskite solar cells

Electron Radiation Effects of Grain-Boundary Evolution on Polycrystalline Silicon in MEMS

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Defects and stability of perovskite solar cells: a critical analysis

Abstract: Metal halide perovskite solar cells (PSCs) continue to improve their power conversion efficiency by over 25.5% which is at the same level as silicon solar cells. The stability of perovskite...

Cited by 76 publications

References 168 publications

Progress and Challenges of SnO2 Electron Transport Layer for Perovskite Solar Cells: A Critical Review

Progress and Challenges of SnO2 Electron Transport Layer for Perovskite Solar Cells: A Critical Review

Effects of polyethylene oxide particles on the photo-physical properties and stability of FA-rich perovskite solar cells

Electron Radiation Effects of Grain-Boundary Evolution on Polycrystalline Silicon in MEMS

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Progress and Challenges of SnO₂ Electron Transport Layer for Perovskite Solar Cells: A Critical Review

Progress and Challenges of SnO₂ Electron Transport Layer for Perovskite Solar Cells: A Critical Review