Theoretical modeling and optimization: Cd-free CTS/Zn(O,S)/ZnO thin film solar cell

Kutwade, Vishnu V.; Gattu, Ketan P.; Sonawane, M.; Tonpe, Dipak A.; Mohammed, Ibrahim M.S.; Sharma, Ramphal

doi:10.1016/j.mtcomm.2021.102972

Cited by 5 publications

(5 citation statements)

References 58 publications

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“…We can refer this low performance to i) the distinctive structure of our devices, which is based on n‐Si as the bottom layer and makes the performance of Al,Ni/AZO/i‐ZnO/CdS/CTS/Mo and Al/n‐Si/CTS/Ag solar cell structures incomparable. ii) The copper‐rich composition of our thin films (Cu/Sn = 2.12–2.36) will increase the carrier concentration and lower the resistivity, [ 96 ] which will have a negative effect on PV characteristics of our solar cells. However, in our paper, we have provided a conclusive investigation on the positive and negative effects of Li doping on CTS thin films and solar cells while a doped PLD target is used.…”

Section: Resultsmentioning

confidence: 99%

“…Due to the limited diffusion length of minority carrier's and the presence of defects in the thin film, the recombination rate increases far away from the depletion region and close to the contact that will decrease the carriers' collection and reduce V oc and J sc . [100][101][102] Parameters of this layers CTS [67,96] n-Si [97][98][99] E g , bandgap energy In Figure 12, we pointed out the V oc and J sc values of n-Si/CTS and n-Si/Li 0.03 CTS solar cells. The values are very close to the simulated plot and have the same tendency in decreasing when the thickness of CTS thin films increases, which supports the accuracy of our model.…”

Section: Modeling Study Of the Effect Of Cts Thickness On The Perform...mentioning

confidence: 99%

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Effect of Li Doping on Cu₂SnS₃/n‐Si Heterojunction Solar Cells: Experiments and Simulation

Houimi

Gezgi̇n

Mercimek

et al. 2022

Cryst. Res. Technol.

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Cu 2 SnS 3 (CTS) semiconductor material owns very interesting absorbing properties that allow it to be effectively utilized in many thin-film-based heterojunction solar cells. In this work, using the ball milling method, a mixture of pure elemental powders is used to synthesize CTS material. Homemade undoped and Li-doped target pellets are used to form CTS-doped and CTS-undoped thin films. The crystallinity investigation of synthesized targets and thin films confirms the formation of CTS tetragonal phase. Compositional, morphologic, and optic studies are also made to examine the effect of Li atom incorporation on different properties of CTS thin films. These CTS thin films are also incorporated into heterojunction solar cells (Al/n-Si/CTS/Ag and Al/n-Si/Li 0.03 CTS/Ag). In addition, J-V characteristics of both CTS and Li 0.03 CTS solar cells are demonstrated and discussed in details. The effect of CTS thin films' thickness on the performance is studied using Solar Cell Capacitance Simulator (SCAPS-1D) program. The results of the calculation are discussed in details and compared with the experimental results. An increase in efficiency is achieved in solar cells based on Li-doped CTS thin films, and it is discussed in detail along with SCAPS-1D simulation that is carried out depending on the thickness of CTS thin films.

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Section: Resultsmentioning

confidence: 99%

Section: Modeling Study Of the Effect Of Cts Thickness On The Perform...mentioning

confidence: 99%

Effect of Li Doping on Cu₂SnS₃/n‐Si Heterojunction Solar Cells: Experiments and Simulation

Houimi

Gezgi̇n

Mercimek

et al. 2022

Cryst. Res. Technol.

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“…Here, the energy bandgap E g and the electron affinity χ e values of the Zn (O, S) are varied as a function of the composition ratio Â using the following relationships: [41]…”

Section: Device Structure and Numerical Simulationmentioning

confidence: 99%

“…Here, the energy bandgap

E_{\text{g}}

and the electron affinity

\left(\chi\right)_{\text{e}}

values of the Zn (O, S) are varied as a function of the composition ratio × using the following relationships: [ 41 ]

$$E_{\text{gZn} \left(\right. \text{O,S} \left.\right)} \left(\right.

…”

Section: Device Structure and Numerical Simulationmentioning

confidence: 99%

“…\text{S} + \text{O} \left.\right)$ composition ratio, ZnO have a bandgap of 3.3 eV, while ZnS has a bandgap of 3.6 eV, and b is the bowing parameter which is taken as 3. [ 41 ] In semiconductor material, the electron affinity is the distance between conduction band and vacuum level. The electron affinity is affected by the composition ratio and the doping.…”

Section: Device Structure and Numerical Simulationmentioning

confidence: 99%

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Numerical Investigation of Copper Zinc Tin Sulphide Based Solar Cell with Non‐Toxic Zn (O, S) Buffer Layer

Lahoual,

Bourennane,

Aidaoui

2024

Physica Status Solidi (a)

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Zinc oxide sulphide Zn (O, S) buffer layer has attracted enormous attention due to its composition of non‐toxic, low cost, and earth abundant elements, unlike cadmium sulphide (CdS) used in copper zinc tin sulphide (CZTS) solar cells. Zn (O, S) possesses a direct optical bandgap that's adjustable between 2.7 and 3.6 eV related to the mole fraction , making it a potential candidate as a buffer layer with CZTS based solar cells. In this work, the Zn (O, S)/CZTS‐based solar cell structure is numerically studied and compared with CdS/CZTS. The existence of defects and traps along the layers and interfaces is taken in consideration. To achieve optimal results, this research has focused on; effects of the element composition (x = S/(S + O)) ratio of Zn (O, S) buffer layer, the addition of a back surface field (BSF) layer, the influence of Zn (O, S)/CZTS and CdS/CZTS interfaces defect density, varying thicknesses and doping concentrations of the layers (absorber, buffer, BSF) on open‐circuit voltage (Voc), short‐circuit density (Jsc), fill factor (FF), and power conversion efficiency. Findings illustrate that the highest conversion efficiency of the Zn (O, S)/CZTS solar cell reached 14.65% with Voc = 0.9972 V, Jsc = 18.37 mA cm−2 and FF = 79.96% which is better than the CdS/CZTS structure.

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Theoretical Insights of Degenerate ZrS₂ as a New Buffer for Highly Efficient Emerging Thin‐Film Solar Cells

Arockiya-Dass,

Sekar,

Marasamy

2023

Energy Tech

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SnS, Sb2Se3, Cu2SnS3, CuSb(S,Se)2, and Cu2BaSn(S,Se)4 are emerging as promising light absorbers for thin‐film photovoltaics due to their extraordinary optoelectronic properties. However, improper band alignment with the buffer and large open‐circuit voltage (VOC) deficit limits their power conversion efficiencies (PCE). Therefore, finding a suitable buffer that overcomes these obstacles is crucial. Herein, ZrS2 as an alternative buffer for the aforementioned emerging thin‐film solar cells using SCAPS‐1D is proposed. The important ZrS2 parameters are optimized, including bandgap, thickness, carrier concentration, and defect density. Interestingly, ZrS2 behaves as a degenerate semiconductor at carrier concentrations >1E17 cm−3, improving the conductivity of the solar cells; it also demonstrates a high defect tolerance nature when the defect density lies between 1E12 and 1E18 cm−3. After ZrS2 parameters optimization, the built‐in potential of SnS, Sb2Se3, Cu2SnS3, CuSb(S,Se)2, and Cu2BaSn(S,Se)4 solar cells is enhanced by 0.2, 0.58, 0.05, 0.42, and 0.3 V, respectively, reducing recombination rate. Upon optimizing absorbers parameters, a PCE > 35% for SnS, Sb2Se3, and CuSb(S,Se)2 while >32% for Cu2SnS3 and Cu2BaSn(S,Se)4 solar cells is accomplished with low VOC loss (≈0.1 V). The absorbers must have high carrier concentration (1E20 cm−3) and low defect density (1E14 cm−3) to achieve these PCEs.

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Theoretical modeling and optimization: Cd-free CTS/Zn(O,S)/ZnO thin film solar cell

Cited by 5 publications

References 58 publications

Effect of Li Doping on Cu₂SnS₃/n‐Si Heterojunction Solar Cells: Experiments and Simulation

Effect of Li Doping on Cu₂SnS₃/n‐Si Heterojunction Solar Cells: Experiments and Simulation

Numerical Investigation of Copper Zinc Tin Sulphide Based Solar Cell with Non‐Toxic Zn (O, S) Buffer Layer

Theoretical Insights of Degenerate ZrS₂ as a New Buffer for Highly Efficient Emerging Thin‐Film Solar Cells

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Theoretical modeling and optimization: Cd-free CTS/Zn(O,S)/ZnO thin film solar cell

Cited by 5 publications

References 58 publications

Effect of Li Doping on Cu2SnS3/n‐Si Heterojunction Solar Cells: Experiments and Simulation

Effect of Li Doping on Cu2SnS3/n‐Si Heterojunction Solar Cells: Experiments and Simulation

Numerical Investigation of Copper Zinc Tin Sulphide Based Solar Cell with Non‐Toxic Zn (O, S) Buffer Layer

Theoretical Insights of Degenerate ZrS2 as a New Buffer for Highly Efficient Emerging Thin‐Film Solar Cells

Contact Info

Product

Resources

About

Effect of Li Doping on Cu₂SnS₃/n‐Si Heterojunction Solar Cells: Experiments and Simulation

Effect of Li Doping on Cu₂SnS₃/n‐Si Heterojunction Solar Cells: Experiments and Simulation

Theoretical Insights of Degenerate ZrS₂ as a New Buffer for Highly Efficient Emerging Thin‐Film Solar Cells