Numerical study of lead free CsSn0.5Ge0.5I3 perovskite solar cell by SCAPS-1D

Nalianya, Milimo Amos; Awino, Celline; Barasa, Henry; Odari, Victor; Gaitho, Francis; Omogo, Benard; Mageto, Maxwell

doi:10.1016/j.ijleo.2021.168060

Cited by 83 publications

(50 citation statements)

References 39 publications

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“…Even though several computational analyses claimed that HPSCs using CsSnGeI 3 as the perovskite film and PCBM as the ETL performed well, experimental research shows that HPSCs using CsSn 0.5 Ge 0.5 I 3 as the absorber layer had a certified PCE of 7.1% . This shows that the results we achieved using an accurate DFT absorption spectrum for the CsSn 0.5 Ge 0.5 I 3 film are in line with the findings of the experiment outputs.…”

Section: Resultssupporting

confidence: 83%

Comparative Study of the Correlation between Diffusion Length of Charge Carriers and the Performance of CsSnGeI₃ Perovskite Solar Cells

Al-Mousoi¹,

Mohammed²,

Salih³

et al. 2022

Energy Fuels

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Due to their enhanced performance and simplicity in manufacturing, scalability, and versatility, lead-halide perovskite-based solar cells (HPSCs) have received much attention in the domains of energy. Lead is present in nature as a poisonous substance that causes various issues to climate and human health and prevents its further industrialization. Over the past few years, there has been a noticeable interest in exploring some alternative lead-free perovskites. However, owing to some intrinsic losses, the performance that may be achieved from these photovoltaics is not up to standards. Thus, for the purpose of efficiency improvement, a comprehensive simulation is required to comprehend the cause of these losses. In the current research, an investigation into how to employ the promisingly efficient lead-free, allinorganic cesium tin−germanium iodide (CsSnGeI 3 ) perovskites as the photoactive layer in HPSCs was performed. Results exhibited a high efficiency of 12.95% with a CsSn 0.5 Ge 0.5 I 3 perovskite thickness of 0.6 μm and a band gap of 1.5 eV at room temperature. High efficiency may be achieved using phenyl-C61-butyric acid methyl ester (PCBM) as an electron transport material because of its favorable energy-level alignment with the perovskite material. The research further tested the perovskite layer thickness and defect density in depth. The results showed that the carrier diffusion lengths have a big effect on how well the HPSC works.

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Section: Resultssupporting

confidence: 83%

Comparative Study of the Correlation between Diffusion Length of Charge Carriers and the Performance of CsSnGeI₃ Perovskite Solar Cells

Al-Mousoi¹,

Mohammed²,

Salih³

et al. 2022

Energy Fuels

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“…A previous numerical study done for the device configuration FTO/PCBM/CsSn 0.5 Ge 0.5 I 3 /spiro‐OMeTAD/Au with the light absorber layer CsSn 0.5 Ge 0.5 I 3 provided a PCE of 7.1% when the organic transport layers PCBM and spiro‐OmeTAD were used in the device configuration. [ 21 ] The device configuration FTO/IGZO/Cs 4 CuSb 2 Cl 12 /CuO/Au containing the double perovskite Cs 4 CuSb 2 Cl 12 as the light‐captivating material furnishes a FF and PCE of 58.5% and 16.53%, respectively. The device configuration FTO/IGZO/Cs 3 Bi 2 I 9 /CuO/Au with the ternary perovskite material Cs 3 Bi 2 I 9 as light‐capturing layer furnishes a maximum FF and PCE of 66.13% and 9.3%, respectively.…”

Section: Resultsmentioning

confidence: 99%

“…The results are found to be consistent with the previous studies. [ 21 ] The defect density of the double perovskite Cs 4 CuSb 2 Cl 12 is altered from 1.0 × 10 11 cm −3 to 1.0 × 10 15 cm −3 . The optimum value of defect density is evaluated to be 1.0 × 10 13 cm −3 for the device design FTO/IGZO/Cs 4 CuSb 2 Cl 12 /CuO/Au.…”

Section: Resultsmentioning

confidence: 99%

Bandgap Tuning and Input Parameter Optimization for Lead‐Free All‐Inorganic Single, Double, and Ternary Perovskite‐Based Solar Cells

Jayan

2021

Solar RRL

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A comprehensive device performance optimization of perovskite solar cells (PSCs) having the device configurations FTO/IGZO/CsSn0.5Ge0.5I3/CuO/Au, FTO/IGZO/Cs4CuSb2Cl12/CuO/Au, and FTO/IGZO/Cs3Bi2I9/CuO/Au containing the single, double, and ternary perovskites CsSn0.5Ge0.5I3, Cs4CuSb2Cl12, and Cs3Bi2I9, respectively, is done utilizing the SCAPS 1D tool. The bandgap tuning of the perovskite layers and the work function optimization of the rear‐contact metals for the chosen device designs provide an enhanced power conversion efficiency of 23.15%, 17.39%, and 9.75% for the solar cell architecture with the light‐captivating layers CsSn0.5Ge0.5I3, Cs4CuSb2Cl12, and Cs3Bi2I9, respectively. Herein, it is identified the variation of electron affinity of the perovskite layer for the aforementioned device configurations does not produce any significant enhancement in the output parameters of the simulated configurations.

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“…The simulation parameters used during the analysis were adopted from the literature. 13,25,30,[34][35][36] 3 | RESULTS AND DISCUSSION…”

Section: Device Simulation and Methodologymentioning

confidence: 99%

“…In above equations, χ Perovskite and χ HTL are the electron affinity of perovskite layer and HTL, respectively, and E gPerovskite and E gHTL are band-gaps of perovskite material and HTL, respectively. 34 We analyze the optimum valence band maxima (VBM) level required for better extraction of holes at the HTL/absorber interface. During this analysis, the affinity of the ETL was kept constant while that of HTL was varied.…”

Section: Influence Of Htl and Etl Affinity On The Device Performancementioning

confidence: 99%

Understanding the strategies to attain the best performance of all inorganic lead‐free perovskite solar cells: Theoretical insights

Roy

Khare

2022

Intl J of Energy Research

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Summary Within a decade of their existence, the potential of Perovskite solar cells (PSCs) has been recognized by the research community. To date, the highest power conversion efficiency (PCE) attained by PSCs has touched the 25.8% mark. However, most of the leading PSCs have incorporation of toxic lead (Pb), posing a barrier on the market acceptability of these cells. Inorganic lead‐free PSCs are being explored extensively as clean and green energy sources. By bridging the performance gap and stability issues, the drawbacks of lead‐free PSCs can be minimized. In this work, we have optimized CsSn0.5Ge0.5I3‐based PSCs using various organic and inorganic transport layers. A comparative analysis of all the simulated cells in terms of capacitance‐voltage (C‐V) and conductance‐voltage (G‐V) characterization has been done. This work reveals the decisive role of charge transport layers (CTLs) in the determination of the built‐in potential of the cell. The impact of absorber layer thickness (with different levels of defect densities), variation of thickness of electron transport layer (ETL), and hole transport layer (HTL) on the performance of PSCs is studied. The results of study on the effect of carrier concentration on the absorber layer, ETL, and HTL (using both organic and inorganic charge transport layers) on the performance of the cell is also conducted. This study explains the role of energy band level tuning required between CTLs and the absorber layer. The role of band offset at the interface of the CTL (ETL/HTL) and perovskite layer upon charge transportation and collection mechanisms are explained in detail. We have calculated and explained the optimum Valence Band Offset and Conduction Band Offset required for a PSC to exhibit the best possible performance. In addition, we have analyzed the role of contact formation and optimum barrier height (¢B) required between HTL and back contact to obtain efficient PSC using different back contacts. Upon using similar cell configuration and different back contacts (Ni, Au, and Ag), the optimized values of (VBO, ¢B) are (0.15 eV, −0.05 eV), (0.1 eV, −0.4 eV), and (−0.15 eV, −0.51 eV), respectively.

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Numerical study of lead free CsSn0.5Ge0.5I3 perovskite solar cell by SCAPS-1D

Cited by 83 publications

References 39 publications

Comparative Study of the Correlation between Diffusion Length of Charge Carriers and the Performance of CsSnGeI₃ Perovskite Solar Cells

Comparative Study of the Correlation between Diffusion Length of Charge Carriers and the Performance of CsSnGeI₃ Perovskite Solar Cells

Bandgap Tuning and Input Parameter Optimization for Lead‐Free All‐Inorganic Single, Double, and Ternary Perovskite‐Based Solar Cells

Understanding the strategies to attain the best performance of all inorganic lead‐free perovskite solar cells: Theoretical insights

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Numerical study of lead free CsSn0.5Ge0.5I3 perovskite solar cell by SCAPS-1D

Cited by 83 publications

References 39 publications

Comparative Study of the Correlation between Diffusion Length of Charge Carriers and the Performance of CsSnGeI3 Perovskite Solar Cells

Comparative Study of the Correlation between Diffusion Length of Charge Carriers and the Performance of CsSnGeI3 Perovskite Solar Cells

Bandgap Tuning and Input Parameter Optimization for Lead‐Free All‐Inorganic Single, Double, and Ternary Perovskite‐Based Solar Cells

Understanding the strategies to attain the best performance of all inorganic lead‐free perovskite solar cells: Theoretical insights

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Comparative Study of the Correlation between Diffusion Length of Charge Carriers and the Performance of CsSnGeI₃ Perovskite Solar Cells

Comparative Study of the Correlation between Diffusion Length of Charge Carriers and the Performance of CsSnGeI₃ Perovskite Solar Cells