Study of CZTS and CZTSSe solar cells for buffer layers selection

Cherouana, Abdelbaki; Labbani, R.

doi:10.1016/j.apsusc.2017.05.027

Cited by 74 publications

(13 citation statements)

References 16 publications

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“…Nevertheless, technological challenges in improving efficiencies and decreasing the high‐energy requirements connected to the fabrication of silicon PV results in a higher global warming potential. In an effort to achieve lower fabrication cost and higher efficiencies, different types of thin‐film PV technologies have been developed including dye‐sensitized solar cells, [ 2,3 ] organic solar cells, [ 4,5 ] copper indium tin sulfur [ 6,7 ] and emerging organic–inorganic lead halide perovskite solar cells (PSCs). [ 8,9 ] The combined merits of low fabrication cost and high power conversion efficiency (PCE) are distinct features of PSCs where PCE has jumped from 3.8% [ 8 ] to 25.2% [ 10 ] in just a decade.…”

Section: Introductionmentioning

confidence: 99%

Applications of Self‐Assembled Monolayers for Perovskite Solar Cells Interface Engineering to Address Efficiency and Stability

Ali

Roldán‐Carmona

Sohail

et al. 2020

Advanced Energy Materials

168

137

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the majority of the market shares as compared to next-generation thin-film PV technologies. Nevertheless, technological challenges in improving efficiencies and decreasing the high-energy requirements connected to the fabrication of silicon PV results in a higher global warming potential. In an effort to achieve lower fabrication cost and higher efficiencies, different types of thin-film PV technologies have been developed including dyesensitized solar cells, [2,3] organic solar cells, [4,5] copper indium tin sulfur [6,7] and emerging organic-inorganic lead halide perovskite solar cells (PSCs). [8,9] The combined merits of low fabrication cost and high power conversion efficiency (PCE) are distinct features of PSCs where PCE has jumped from 3.8% [8] to 25.2% [10] in just a decade. Such a sharp increase in PCE is mainly attributed to the large absorption coefficient, [11] long carrier lifetime, [12] high trap resistance, [13] high dielectric constant, [14-16] low binding energy, [17] and tunable bandgap of 1.2−1.7 eV, [18] all combined in a single perovskite material. 1.1. Perovskite Solar Cell Device Structures A typical perovskite solar cell consists of a light-absorbing perovskite layer which is sandwiched between an electron transport layer (ETL) and a hole transport layers (HTL). To complete the device, ETL is supported on a transparent conducting oxide (TCO) front electrode, and HTL on metal-coated back contact electrode, Figure 1. There are two basic structures for the PSC: the so-called mesoporous structure, which contains a mesoporous ETL layer (i.e., mesoporous TiO 2), and the planar structure, as depicted in Figure 1a,b. Even though early reports based on mesoporous devices assumed that the perovskite infiltration through the mesoporous scaffold improved the charge carrier collection to the electrode, later investigations performed by Lee and co-workers replaced the TiO 2 with an insulating Al 2 O 3 mesoporous layer, and reported for the first time the ambipolar nature of the perovskite materials, allowing the realization of longer diffusion length. [19] This enabled the fabrication of planar devices, and gave rise to an impressive evolution of device architectures, novel materials and cell configurations either in n-i-p or p-in designs. [12,19,20] In addition, Due to a certified 25.2% high efficiency, low cost, and easy fabrication; perovskite solar cells (PSCs) are the focus of interest among the nextgeneration photovoltaic technologies. Long-term stability is one of the most challenging obstacles to bring technology from the lab to the market. In this review, applications of self-assembled monolayers (SAMs) to enhance the power conversion efficiency (PCE) and stability of PSCs is discussed. In the first part, the introduction of SAMs, and deposition techniques applied to different PSC architectures are described. In the middle section, current efforts to utilize SAMs to fine-tune the optoelectronic properties to enhance the PCE and stability are detailed. The improvements in surface morphology, energ...

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Section: Introductionmentioning

confidence: 99%

Applications of Self‐Assembled Monolayers for Perovskite Solar Cells Interface Engineering to Address Efficiency and Stability

Ali

Roldán‐Carmona

Sohail

et al. 2020

Advanced Energy Materials

168

137

View full text Add to dashboard Cite

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“…After having optimized the buffer layer Cd0.6Zn0.4S, we will place particular emphasis on other factors influencing the performance of the proposed structure, in particular the thickness of the absorbent layer [28,29]. To analyze its impact, calculations were made for different thicknesses of the CZTS absorber layer ranging from 10 nm to 10 µm, this layer, assuming all other parameters constant as described in the Table 1.…”

Section: Czts Absorbent Layer Thickness Influencementioning

confidence: 99%

“…Likewise, the acceptor carrier concentration NA of CZTS absorber thin layer plays a major role in improving the performance of the structure. From this perspective one of the aims of our paper is to study its effect on the overall efficiency of our solar cell [28,29]. After setting the optimum value for the CZTS absorbent layer thickness at 2.5 m, we note the normalized output parameters (VOC = 0.825 V, JSC = 23.5 mA/cm 2 , FF = 65.3%,  = 7.7%) in Figure 9.…”

Section: Czts Absorbent Layer Thickness Influencementioning

confidence: 99%

Conduction Band Offset Effect on the Cu2ZnSnS4 Solar Cells Performance

Latrous¹,

Mahamdi²,

Touafek³

et al. 2021

ACSM

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Among the causes of the degradation of the performance of kesterite-based solar cells is the wrong choice of the n-type buffer layer which has direct repercussions on the unfavorable band alignment, the conduction band offset (CBO) at the interface of the absorber/buffer junction which is one of the major causes of lower VOC. In this work, the effect of CBO at the interface of the junction (CZTS/Cd(1-x)ZnxS) as a function of the x composition of Zn with respect to (Zn+Cd) is studied using the SCAPS-1D simulator package. The obtained results show that the performance of the solar cells reaches a maximum values (Jsc = 13.9 mA/cm2, Voc = 0.757 V, FF = 65.6%, ɳ = 6.9%) for an optimal value of CBO = -0.2 eV and Zn proportion of the buffer x = 0.4 (Cd0.6Zn0.4S). The CZTS solar cells parameters are affected by the thickness and the concentration of acceptor carriers. The best performances are obtained for CZTS absorber layer, thichness (d = 2.5 µm) and (ND = 1016 cm-3). The obtained results of optimizing the electron work function of the back metal contact exhibited an optimum value at 5.7 eV with power conversion efficiency of 13.1%, Voc of 0.961 mV, FF of 67.3% and Jsc of 20.2 mA/cm2.

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“…This numerical simulation uses the solar spectrum AM.1.5, and the temperature is set to 300 K. Common CZTSSe solar cells include a metal back electrode, Mo(Se 1– x , O x ) 2 layer, CZTSSe absorber layer, n-type CdS, intrinsic ZnO, and window layer . The simulation parameters of each layer are shown in Table from refs − .…”

Section: Device Simulationmentioning

confidence: 99%

Numerical Study to Improve the Back Interface Contact of CZTSSe Solar Cells Using Oxygen-Doped Mo(Se_1–x, O_x)₂

et al. 2021

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Kesterite-based Cu2ZnSn(S, Se)4 (CZTSSe) thin-film solar cells have attracted great interest in the field of photovoltaic technology due to their earth-abundant and environment-benign constituents. However, the efficiency of CZTSSe solar cells reaches a bottleneck stage of 12.6%, which has been improved from the aspects of the absorption layer and interface contact. Herein, the effect of oxygen-doped molybdenum selenide (Mo(Se1–x , O x )2) on the back interface contact of the CZTSSe solar cells has been investigated using SCAPS software, revealing that oxygen doping could regulate the band gap of Mo(Se1–x , O x )2, thus greatly optimizing the band arrangement at both the Mo/Mo(Se1–x , O x )2 interface and the Mo(Se1–x , O x )2/CZTSSe interface. These numerical results illustrate that the Mo(Se1–x , O x )2 layer with a higher carrier concentration and appropriate band gap (0.9 eV) can optimize the band alignment of the back interface and effectively promote solar cell performance from the energy conversion efficiency of 9.93% with an oxygen-free MoSe2 layer up to 19.27% with oxygen-doped Mo(Se1–x , O x )2. These encouraging results demonstrate that oxygen-doped Mo(Se1–x , O x )2 is an essential route to improve the back interface contact of CZTSSe solar cells, which may also be generally applicable to other thin-film solar cells.

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Study of CZTS and CZTSSe solar cells for buffer layers selection

Cited by 74 publications

References 16 publications

Applications of Self‐Assembled Monolayers for Perovskite Solar Cells Interface Engineering to Address Efficiency and Stability

Applications of Self‐Assembled Monolayers for Perovskite Solar Cells Interface Engineering to Address Efficiency and Stability

Conduction Band Offset Effect on the Cu2ZnSnS4 Solar Cells Performance

Numerical Study to Improve the Back Interface Contact of CZTSSe Solar Cells Using Oxygen-Doped Mo(Se_1–x, O_x)₂

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Study of CZTS and CZTSSe solar cells for buffer layers selection

Cited by 74 publications

References 16 publications

Applications of Self‐Assembled Monolayers for Perovskite Solar Cells Interface Engineering to Address Efficiency and Stability

Applications of Self‐Assembled Monolayers for Perovskite Solar Cells Interface Engineering to Address Efficiency and Stability

Conduction Band Offset Effect on the Cu2ZnSnS4 Solar Cells Performance

Numerical Study to Improve the Back Interface Contact of CZTSSe Solar Cells Using Oxygen-Doped Mo(Se1–x, Ox)2

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Numerical Study to Improve the Back Interface Contact of CZTSSe Solar Cells Using Oxygen-Doped Mo(Se_1–x, O_x)₂