Novel Perovskite solar cell: Incorporating CNTs and Cu2O as charge carriers transport materials for performance enhancement – Opto-electrical modelling

Kenfack, Guy Maurel Dzifack; Nya, Fridolin Tchangnwa; Laref, A.

doi:10.1016/j.matlet.2023.133964

Cited by 6 publications

(7 citation statements)

References 10 publications

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“…The current density in the cell can be written in the following form [ 3 ]

$$J = J_{\text{Génération}} - J_{\text{Recombinaison}} = - q \int_{- d}^{W + L} G_{\text{L}} \left(\right. \lambda , x \left.\right) d x - J_{\text{ir}} + q \int_{0}^{W + L} R \left(\right.

…”

Section: Methodsmentioning

confidence: 99%

“…The past two decades have been marked by an intensification of research in the field of photovoltaic technologies. The current approach aims to provide lasting and concrete solutions to the problems of substitution of active, [1][2][3] window and buffer layers; [4] increasing the conversion yields; [5] determining the factors of stability over time; [6] promoting the use of more abundant materials; and reducing material quantities [7] and production costs. [8,9] It is with the aim of meeting these various challenges that numerous works have been undertaken, notably those of Tchangnwa et al [10,11] on CIGS solar cells, who investigated on the degradation of performance of CdS/CIGSe-based solar cells, highlighted the beneficial effects of alternative buffer layers which enables them to achieve yields above 22% with nanoscale thicknesses for the different layers.…”

Section: Introductionmentioning

confidence: 99%

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Toward High‐Efficiency CIGS‐based Thin‐film Solar Cells Incorporating Surface Defects Layer, through a Comparative Study of Electrical Characteristics—SCAPS 1D Modeling

Houmomou,

Mohammadou,

Dzifack Kenfack

et al. 2023

Energy Tech

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This research contribution investigates a way of improving performance of CIGSe‐based second‐generation thin‐film solar cells by analyzing output parameters of two reference cells using cadmium sulfide and zinc sulfide as buffer layers. The performances are improved by acknowledging both the exceptional properties of ZnS as a buffer layer, and the beneficial contributions of an indium‐enrich layer, which form a surface defect layer at the ZnS/CIGSe heterojunction. SCAPS‐1D numerical modeling software is used to conduct calculations, and the structure using ZnS enables achieving an efficiency of 24.31%. Deeper investigation on the effects of variation of functional layers properties such as bandgap, electron affinity, doping level, and thickness enables retaining an optimized structure, and results show an improved efficiency of 25.22% and a fill factor of 80.26%, indicating of a fluid flow of charge carriers, thus a more stable device. All simulations are performed considering experimental environment parameters, an external temperature of 300 K, light illumination of AM1.5G, and defects states are assumed in both the bulk and at interfaces.

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“…The current density in the cell can be written in the following form [ 3 ]

$$J = J_{\text{Génération}} - J_{\text{Recombinaison}} = - q \int_{- d}^{W + L} G_{\text{L}} \left(\right. \lambda , x \left.\right) d x - J_{\text{ir}} + q \int_{0}^{W + L} R \left(\right.

…”

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Toward High‐Efficiency CIGS‐based Thin‐film Solar Cells Incorporating Surface Defects Layer, through a Comparative Study of Electrical Characteristics—SCAPS 1D Modeling

Houmomou,

Mohammadou,

Dzifack Kenfack

et al. 2023

Energy Tech

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“…Numerical modelling SCAPS software will be deployed to model our cells, along with MATLAB/SIMULINK for analogical modelling, and performance visualization as well as plotting data. In modeling thin film devices, SCAPS software has proven to be a reliable and trustworthy tool acknowledged by the photovolataic (PV) community and, when simulation conditions are set appropriately, results obtained are in fair good agreement with experimental work [13][14][15][16][17]. Recently, several extensions were integrated and it has been improved its capabilities to model recombination processes and several tunnelling mechanisms.…”

Section: Theory and Numerical Modelling 21 Theorymentioning

confidence: 99%

Multilayers strategy with a mixed CdTe/ZnTe absorber layer for optical trapping and efficiency improvement in CdTe-based solar – SCAPS modelling

Daouda,

Tchangnwa Nya,

Dzifack Kenfack

et al. 2024

Phys. Scr.

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This work is a theoretical contribution to improving the performance of CdTe-based thin-film solar cells (TFSC) by optimising the collection of photons in the absorber structure. The basic data are retrieved from experimental reference work and the reference structure is as follows: CdS/CdTe/ZnTe with an efficiency of 20.16%, where ZnTe is used as a BSF to limit backward recombination. The approach is to incorporate a ZnTe thin layer at the CdS/CdTe heterojunction, to subdivide the CdTe active layer into two (02) sub-layers and to identify the optimum structure as a function of their position in the stack. In an approach towards thickness reduction, numerical modelling are carried out using SCAPS software, which enables to calculate the current-voltage (J-V), power-voltage (P-V) and external quantum efficiency (EQE) output characteristics employing only 500 nm of absorber layer. The discontinuities in the material properties are assumed by modelling the interfaces at the heterojunctions, recombination and defect densities. The effects of defects states density, doping level in the CdTe active layer and external temperature were also investigated to gain a deeper understanding of how these factors can affect performances. In terms of the obtained fill factor (FF) and efficiency (PCE), the performances were improved with the following structure CdS/CdTe/ZnTe/CdTe/ZnTe, FF=81.6% and PCE=23.45%, with 500 nm thickness of CdTe. These results are opening a promising new perspective in high efficiency CdTe TFSC.

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“…These layers are critical as they mainly contribute to solar device performance. The hybrid Perovskite solar cells (PSCs), which are based on any organic–inorganic active material complex following the formula AMX 3 1 , 2 , where X is a halide ion, M is a tiny divalent metal cation, and A is a cation of organic/inorganic nature, analogous to calcium titanate CaTiO 3 ; they are positioning themselves as a serious competitor (PCE ~ 24%) to silicon technology (PCE ~ 27%) 3 . The photoactive properties of perovskites exhibit excellent carrier mobilities (10–200 cm 2 V –2 s –1 ), negligible dipolar binding energies (0.3 eV), long carrier diffusion lengths (> 1 µm) 4 , excellent carrier lifetimes (270 ns), dramatic defect densities tolerance (10 16 cm –3 ), robust bipolar transport properties, and a high dielectric constant 4 .…”

Section: Introductionmentioning

confidence: 99%

“…Recalling that hole transport material (HTM) is reported as impacting the performance and the consistency of PSCs, we investigate on the replacement of the Spiro-OMeTAD HTM, herein denoted SPO. Even if SPO exhibits a relatively low electron recombination rate, which is beneficial for hole transport, its high cost hampers its large-scale production 2 . Alternative HTM such as CuI, Cu 2 O, CuSCN are prospected as a trade-off between cost-effectiveness, toxicity and performance.…”

Section: Introductionmentioning

confidence: 99%

Materials and interfaces properties optimization for high-efficient and more stable RbGeI3 perovskite solar cells: optoelectrical modelling

Samaki,

Tchangnwa Nya,

Dzifack Kenfack

et al. 2023

Sci Rep

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In this research work, we investigated the effects of a broad set of materials properties and external operating parameters on the opto-electrical output of a hybrid RbGeI3-based perovskite solar cell (PSC) as a means of enhancing its performance. We first performed a judicious numerical modelling of the reference cell with the following structure FTO/TiO2/RbGeI3/Spiro-OMeTAD/Ag, with data retrieved from the experiment. SCAPS program enables to model the device, considering charge carriers transport governing equations. Investigations are directed on addressing the current challenges that include thinner, less environmentally harmful, cost-effectiveness, and more stable solar devices over time. Analysis of the effects of different hole transport material (HTM) on current–voltage (J-V) and external quantum efficiency (QE) characteristics, helps to identify CuI as an ideal HTM. Optimal cell output were achieved by investigating the effects of metal contact work function, defect states, RbGeI3 thickness, light transmission/reflection at the front/back contact, as well as operating temperature. As a result, efficiency increased significantly from 10.11 to 18.10%, and fill factor that represents a stability indicator, increased from 63.68 to 76.95%. Moreover, an optimum open-circuit voltage Voc = 0.70 V and a high short-circuit current density of Jsc = 33.51 mA/cm2 were recorded. An additional study on the capture cross-section of charge carriers ($${\sigma }_{n,p}$$ σ n , p ) on PV characteristics, enabled to achieve a power conversion efficiency (PCE) of 29.71% and FF of 88% at a value of $${\sigma }_{n,p}$$ σ n , p selected to be 10–22 cm2. This contribution aims at designing and producing thinner, more efficient, more stable and more environmentally clean and economically viable PSCs.

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Novel Perovskite solar cell: Incorporating CNTs and Cu2O as charge carriers transport materials for performance enhancement – Opto-electrical modelling

Cited by 6 publications

References 10 publications

Toward High‐Efficiency CIGS‐based Thin‐film Solar Cells Incorporating Surface Defects Layer, through a Comparative Study of Electrical Characteristics—SCAPS 1D Modeling

Toward High‐Efficiency CIGS‐based Thin‐film Solar Cells Incorporating Surface Defects Layer, through a Comparative Study of Electrical Characteristics—SCAPS 1D Modeling

Multilayers strategy with a mixed CdTe/ZnTe absorber layer for optical trapping and efficiency improvement in CdTe-based solar – SCAPS modelling

Materials and interfaces properties optimization for high-efficient and more stable RbGeI3 perovskite solar cells: optoelectrical modelling

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