Investigation of the role of back contact work function for hole transporting layer free perovskite solar cells applications

Ghosh, Subrata; Porwal, Shivam; Singh, Trilok

doi:10.1016/j.ijleo.2022.168749

Cited by 26 publications

(13 citation statements)

References 53 publications

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“…In this case, the increase in W f drives a stronger built‐in electric field, improving the driving forces of carrier migration along the perovskite layer (Figure 4c–f) due to a larger charge density of electrons and holes on the ETL and HTL, respectively. [ 93–95 ]…”

Section: General Architecture Of Solar Cellsmentioning

confidence: 99%

Advances in Carbon Materials Applied to Carbon‐Based Perovskite Solar Cells

et al. 2023

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Perovskite‐based solar cells (PSCs) are some of the most promising devices for capturing photovoltaic energy. Efficiency has increased from single digits to a certified 25.7%, an unprecedented improvement for any solar cell technology. Incorporating carbon materials into perovskite solar cells promises to be revolutionary in the solar cell field by increasing stability, decreasing manufacturing costs, and making them attractive for commercialization. Here, an overview of the advances in carbon‐based perovskite solar cells (C–PSCs) that incorporate different carbon materials as back contact on different device architectures is presented. An overview of PSC architectures and high‐ and low‐temperature C–PSCs is provided. Additionally, recent advances in the main carbon materials applied in the field, such as graphene, carbon nanotubes, carbon dots, and biocarbon, are presented. Finally, a summary of carbon materials applied to C–PSCs is provided.

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Section: General Architecture Of Solar Cellsmentioning

confidence: 99%

Advances in Carbon Materials Applied to Carbon‐Based Perovskite Solar Cells

et al. 2023

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“…82,184 However, the V oc of these devices is still below 15%, which may result from the bad contact and/or the mismatched energy levels between the perovskite and the electrode. 182 A recent simulation study using SCAPS-1D software conducted by Singh et al 185 revealed that a PCE of more than 22% could be obtained via the use of a counter electrode with a work function of 5.4 eV or above. They further indicated that the bulk or interfacial defects considerably impact the device performances, where the V oc quickly decreases with the increase in the defect density.…”

Section: Future Prospectsmentioning

confidence: 99%

“…Considering the expensive cost of Au, and its easy diffusion into the perovskite layer, researchers are studying alternative electrodes such as carbon-based back contacts, which are known to be affordable as well as to provide good efficiency and long-term stability. , However, the V oc of these devices is still below 15%, which may result from the bad contact and/or the mismatched energy levels between the perovskite and the electrode . A recent simulation study using SCAPS-1D software conducted by Singh et al revealed that a PCE of more than 22% could be obtained via the use of a counter electrode with a work function of 5.4 eV or above. They further indicated that the bulk or interfacial defects considerably impact the device performances, where the V oc quickly decreases with the increase in the defect density.…”

Section: Future Prospectsmentioning

confidence: 99%

Oxidation of Spiro-OMeTAD in High-Efficiency Perovskite Solar Cells

Ouedraogo

Odunmbaku

Guo

et al. 2022

ACS Appl. Mater. Interfaces

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2,2′,7,7′-Tetrakis(N,N-di-p-methoxyphenylamine)-9,9′-spirobifluorene (spiro-OMeTAD), as an organic small molecule material, is the most commonly employed hole transport material (HTM) in perovskite solar cells (PSCs) because of its excellent properties that result in high photovoltaic performances. However, the material still suffers from low conductivity, leading to the necessary use of dopants and oxidative processes to overcome this issue. The spiro-OMeTAD oxidation process is highlighted in this review, and the main parameters involved in the process have been studied. Furthermore, the best alternatives aiming to improve the spiro-OMeTAD electrical properties have been discussed. Lastly, this review concludes with suggestions and outlooks for further research directions.

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“…Similarly, Minemoto et al obeserved a 0.3 eV barrier height and Ghosh et al obeserved that a barrier height of 0.2 eV can effectively block the electrons. [49,50] S3d, Supporting Information indicates that the valence band of the Cs 2 SnI 6 absorber and the valence band of the Cu 2 O-HTL are aligned to allow the smooth hole transfer of charge carriers. On the other hand, the worst performing device in terms of VBO is CuSbS 2 having a VBO of 0.287 eV which reduces the efficient hole transfer to the electrode (FTO).…”

Section: Optimization Of Various Htl Materialsmentioning

confidence: 99%

Investigation of Defects in Cs₂SnI₆‐Based Double Perovskite Solar Cells Via SCAPS‐1D

Porwal

Paul

Dixit

et al. 2022

Advcd Theory and Sims

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Effective conversion of solar photons into electrical power through the development of smart and eco‐friendly materials is one of the most extensively researched methods for generating renewable energy. In this work, an inorganic lead‐free double perovskite Cs2SnI6 material is employed as an active layer for solar cell applications, together with GO (graphene oxide) as electron transport layer (ETL) and Cu2O as hole transport layer (HTL). In order to find the most efficient photovoltaic device, a detailed theoretical study using the SCAPS‐1D simulation program is conducted. The device performance is monitored and analyzed by considering various HTLs, doping density in active layer, light intensity, ETL thickness, operating temperature, parasitic resistances, and the role of defects on device performance. The optimized device displays a power conversion efficiency of 23.64% with excellent photovoltaic characteristics. This theoretical study reveals that Cs2SnI6 can be a promising choice for solar cell applications as a lead‐free double perovskite material.

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Investigation of the role of back contact work function for hole transporting layer free perovskite solar cells applications

Cited by 26 publications

References 53 publications

Advances in Carbon Materials Applied to Carbon‐Based Perovskite Solar Cells

Advances in Carbon Materials Applied to Carbon‐Based Perovskite Solar Cells

Oxidation of Spiro-OMeTAD in High-Efficiency Perovskite Solar Cells

Investigation of Defects in Cs₂SnI₆‐Based Double Perovskite Solar Cells Via SCAPS‐1D

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Investigation of the role of back contact work function for hole transporting layer free perovskite solar cells applications

Cited by 26 publications

References 53 publications

Advances in Carbon Materials Applied to Carbon‐Based Perovskite Solar Cells

Advances in Carbon Materials Applied to Carbon‐Based Perovskite Solar Cells

Oxidation of Spiro-OMeTAD in High-Efficiency Perovskite Solar Cells

Investigation of Defects in Cs2SnI6‐Based Double Perovskite Solar Cells Via SCAPS‐1D

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Investigation of Defects in Cs₂SnI₆‐Based Double Perovskite Solar Cells Via SCAPS‐1D