Abstract
This research paper consists of a numerical simulation, where we studied the performance of a solar cell with a double-absorber layer. The materials used in this work are similar kesterites based on Cu2FeSnS4 (CFTS) and Cu2BaSnS4 (CBTS), where CFTS is the main absorber with Eg = 1.5 eV, and CBTS is the extra absorber with Eg = 1.9 eV. The use of both materials to absorb light in the proposed solar cell was very beneficial for photovoltaic performance. The study was mainly done on the different parameters and properties of the solar cell, such as thicknesses, concentrations of do**, and resistances. As a result, the proposed structure has great outputs. It offers 1.48 V, 28.26 mA/cm2, 82.68, and 34.65% for Voc, Jsc, FF, and ƞ, respectively.
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Change history
03 May 2024
A Correction to this paper has been published: https://doi.org/10.1007/s12596-024-01849-3
Abbreviations
- CFTS (Cu2FeSnS4):
-
Copper iron tin sulfur
- PCE (ɳ(%)):
-
Power conversion efficiency
- CdS:
-
Cadmium sulfide
- FF (%):
-
Fill factor
- ITO:
-
Indium tin oxide
- SC:
-
Solar cell
- CBTS (Cu2BaSnS4):
-
Copper barium tin sulfide
- E g :
-
Band gap energy
- µ n (cm2/vs):
-
Electron mobility
- V oc (V):
-
Open-circuit voltage
- µ p (cm2/vs):
-
Hole mobility
- J sc (mA/cm2):
-
Short-circuit current density
- \({N}_{{\text{D}}}\) (cm− 3):
-
Donor’s concentration
- Q e (%):
-
Quantum efficiency
- \({N}_{{\text{A}}}\)(cm− 3):
-
Shallow uniform acceptor density
- E g (eV):
-
Band gap
- V e /h (cm/s):
-
Thermal velocity of electron/Hole
- χ (eV):
-
Electron affinity
- Nt (cm− 3):
-
Defect density
- ε r :
-
Dielectric permittivity (relative)
- \(\varphi ({\text{ev}})\) :
-
Contact work function
- N c (cm− 3):
-
CB effective density of states
- Se (cm/s):
-
Electrons surface recombination velocity
- N v (cm− 3):
-
VB effective density of states
- Sh (cm/s):
-
Surface recombination velocity for holes
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Acknowledgements
The authors would like to thank Mr. Marc Burgelman for ensuring that \(SCAPS-1D\) software was available.
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Oublal, E., Al-Hattab, M., Ait Abdelkadir, A. et al. Cu2BaSnS4/Cu2FeSnS4 combination for a good light absorption in thin-film solar cells—a numerical model. J Opt (2024). https://doi.org/10.1007/s12596-024-01667-7
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DOI: https://doi.org/10.1007/s12596-024-01667-7