Performance evaluation and material parameter perspective of eco-friendly highly efficient CsSnGeI3 perovskite solar cell

Raghvendra,; Kumar, Ramesh; Pandey, Saurabh Kumar

doi:10.1016/j.spmi.2019.106273

Cited by 79 publications

(25 citation statements)

References 26 publications

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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%

“…Theoretically, 13.29% is the highest reported PCE upon optimization of the device fabricated by Min Chen and co-workers. 13 On the basis of the above facts, it can be stated that CsSn 0.5 Ge 0.5 I 3 is superior to conventional CsSnI 3 and CsPbI 3 . In this work, we have demonstrated an efficient CsSn 0.5 Ge 0.5 I 3 based solar cell.…”

Section: Introductionmentioning

confidence: 98%

“…24,25 The first theoretical study of PSC using CsSn 0.5 Ge 0.5 I 3 as absorber layer was carried out by Raghevendra et al. 13 They optimized the device fabricated by Min Chen et al 9 and attained a PCE of 13.29%. Their study was mainly focused on absorber layer requirements (thickness variation, defect density, and interface defect density) and alternate CTL (along with optimization of doping level) that could be used.…”

Section: Introductionmentioning

confidence: 99%

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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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“…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%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

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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“…It can interpret the measurements on complex structures, design and optimisation of advanced cell structures. There are various simulation packages like SILVACO ATLAS, AMPS, COMSOL etc in the market [35].…”

Section: Device Simulation Methodologymentioning

confidence: 99%

Numerical Analysis of CsSnGeI<sub>3</sub> Perovskite Solar Cells Using SCAPS-1D

Thomas¹

2021

IJEPE

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Recently, organic-inorganic perovskite-based solar cells have become promising devices due to their unique properties in the photovoltaic field. However, the factor of toxicity, stability, high production cost and complicated fabrication processes of these devices is a challenge to their progress in commercial production. Here a numerical modelling of Caesium Tin-Germanium Tri-Iodide (CsSnGeI 3 ) as an efficient perovskite light absorber material is carried out. In this paper, different inorganic Hole Transport Materials (HTMs) such as Cu 2 O, CuI, CuSbS 2 , CuSCN and NiO have been analyzed with C 60 as the Electron Transport Material (ETM). We intend to replace the conventional hole and electron transport materials such as TiO 2 and Spiro-OMeTAD which have been known to be susceptible to light induced degradation. Moreover, the influence of the Electron Transport Layer (ETL) and the perovskite layer properties, bandgap, doping concentration and working temperature for various Hole Transport Layers (HTL) on the overall cell performance have been rigorously investigated. The design of the proposed PSC is performed utilizing SCAPS-1D simulator and for optimum device an efficiency greater than 30% was obtained. The results indicate that CsSnGeI 3 and C 60 are viable candidates for use as an absorber layer and electron transport layer in high-efficiency perovskite solar cells, with none of the drawbacks that other PSCs have.

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“…Raghvendra et al presented the theoretical analysis of the CsSnGeI 3 PSC with a structure of FTO/PCBM/CsSnGeI 3 /Spiro‐OMeTAD/Au. [ 121 ] By optimizing the charge transport layer and perovskite film, a simulated PCE of 13.29% was reported for the CsSnGeI 3 PSC. Vivo et al synthesized CsSn 0.6 Ge 0.4 I 3 alloy perovskite nanocrystals (PNCs, Figure 8c) by a facile solution process and fabricated planar CsSn 0.6 Ge 0.4 I 3 PNCs PSCs.…”

Section: Strategies For Improving the Performance And Stability Of Cs...mentioning

confidence: 99%

Inorganic CsSnI₃ Perovskite Solar Cells: The Progress and Future Prospects

Wang

Chang

et al. 2022

Solar RRL

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environmental stability of hybrid PSCs and hamper the practical application of this device. [8,9] The stability of perovskite materials can be largely enhanced by completely replacing the organic components with inorganic cesium ion (Cs þ ). [10][11][12][13][14][15] Therefore, the inorganic cesium lead halide PSCs have been considered as one of the most promising photovoltaic technologies recently. [16,17] Among all inorganic cesium lead halide perovskite materials, CsPbI 3 perovskite has been considered as the best candidate for solar cells application due to its suitable bandgap of 1.73 eV and excellent optoelectronic properties. [18,19] Since firstly reported in 2014, the CsPbI 3 PSCs have achieved great progress in the stability and power conversion efficiency through the additive and composition engineering, interfacial modification, and optimization of fabrication process. [20][21][22][23][24][25][26][27] Nevertheless, the presence of toxic lead in CsPbI 3 PSCs make an insurmountable obstruction on the way towards practical deployment. Therefore, it is quite imperative to completely replace toxic lead in CsPbI 3 perovskite with environmentally benign metal elements without compromising their performance.The superior performance of lead-based perovskite mainly derives from the combined effect of high structure symmetry, the lone-pair 6s 2 electron in lead, spin-orbit coupling, and high electronic dimensionality. [28][29][30][31][32] Therefore, the low-toxic metal ions that have similar ionic size and electronic structure as Pb 2þ have been widely considered as the potential alternatives for Pb 2þ in inorganic CsPbI 3 perovskite, such as Sn 2þ , Ge 2þ , Mn 2þ , Cu 2þ , Bi 3þ , and Sb 3þ . [33][34][35][36][37] After several years' research, a Sn-based inorganic perovskite, CsSnI 3 , has been demonstrated to be the most suitable lead-free inorganic perovskite for PSCs. [38,39] Sn has similar electronic configuration to Pb. So, the crystal and electronic structure of CsSnI 3 perovskite are similar to that of Pb-based counterpart. Especially, inorganic CsSnI 3 perovskite exhibits even superior optoelectronic properties in comparison to inorganic Pb-based perovskite, such as narrower optical bandgap (1.3 eV) that is more favorable for harvesting sun light and higher charge carrier mobility that is favorable to suppress the charge recombination. Therefore, inorganic CsSnI 3 perovskite shows a great promise for developing highperformance lead-free PSCs.In 2012, Chen et al. first presented a CsSnI 3 perovskite-based Schottky solar cell with a structure of indium-tin-oxide

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Performance evaluation and material parameter perspective of eco-friendly highly efficient CsSnGeI3 perovskite solar cell

Cited by 79 publications

References 26 publications

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

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

Numerical Analysis of CsSnGeI<sub>3</sub> Perovskite Solar Cells Using SCAPS-1D

Inorganic CsSnI₃ Perovskite Solar Cells: The Progress and Future Prospects

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Performance evaluation and material parameter perspective of eco-friendly highly efficient CsSnGeI3 perovskite solar cell

Cited by 79 publications

References 26 publications

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

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

Numerical Analysis of CsSnGeI&lt;sub&gt;3&lt;/sub&gt; Perovskite Solar Cells Using SCAPS-1D

Inorganic CsSnI3 Perovskite Solar Cells: The Progress and Future Prospects

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Numerical Analysis of CsSnGeI<sub>3</sub> Perovskite Solar Cells Using SCAPS-1D

Inorganic CsSnI₃ Perovskite Solar Cells: The Progress and Future Prospects