An investigation of silicon-based tandem solar cells incorporating Al-doped ZnO (AZO) and Cu2O metal oxides, via two of the most efficient methods of optical modeling, specifically ray tracing and transfer matrix algorithms, was performed. The simulations were conducted based on specialized software, namely Silvaco Atlas and MATLAB, as well as on OPAL2 simulation platform. The optical analysis involved the calculation of the spectral curves for reflectance, absorptance and transmittance for different thicknesses of the thin film layers constituting the cell. It was established the optimum thickness of the AZO layer based on the minimum reflectance and maximum transmittance. Moreover, several materials were investigated in order to determine the optimum buffer layer for the tandem solar cell, based on optical modeling. The optical parameters of the ZnO/Cu2O top subcell were optimized, in order to achieve the highest conversion efficiency of such heterojunction solar cell.
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 Ø. Nordseth R. Kumar K. Bergum L. Fara S. E. Foss H. Haug F. Dragan D. Craciunescu P. Sterian I. Chilibon C. Vasiliu L. Baschir D. Savastru E. Monakhov B. G. Svensson. Optical Analysis of a ZnO/Cu2O Subcell in a Silicon-Based Tandem Heterojunction Solar Cell Green and Sustainable Chemistry 7 (2017) 57-69
 L. Fara A. Diaconu F. Dragan. Trends Challenges and Opportunities in Advanced Solar Cells Technologies and PV Market Journal of Green Engineering 5 (2016) 157-186
 Y. Takiguchi S. Miyajima. Device simulation of cuprous oxide heterojunction solar cells Jpn. J. Appl. Phys. 54 (2015) 112303
 R. Mitroi V. Ninulescu L. Fara. Tandem solar cells based on Cu2O and c-Si subcells in parallel configuration: numerical simulation International Journal of Photoenergy 2017 (2017) 7284367
 R. Mitroi V. Ninulescu L. Fara. Performance optimization of solar cells based on heterojunctions with Cu2O: numerical analysis. Journal of Energy Engineering 143(4) (2017) 04017005
 L. Fara M. Yamaguchi. Advanced Solar Cell Materials Technology Modeling and Simulation. IGI Global Publishing House Hershey (2013).
 B. G. Svensson S. J. Pearton C. Jagadish. Oxide Semiconductors Semiconductors and Semimetals. Elsevier & Academic Press Amsterdam 88 (2013)
 F. Dragan L. Fara P. Sterian D. Craciunescu C. Dumitru. Colored building integrated photovoltaic systems based on DSSC and metal oxides solar cells Proceedings of the National Symposium on Energy and Environment in Contemporary Context UAUIM Publishing House (2017)
 Ø. Nordseth R. Kumar K. Bergum L. Fara S. E. Foss H. Haug C. Dumitru V. Muscurel F. Dragan D. Craciunescu P. Sterian I. Chilibon C. Vasiliu L. Baschir D. Savastru E. Monakhov B. G. Svensson. Electro-Optical Modeling of a ZnO/Cu2O Subcell in a Silicon-Based Tandem Heterojunction Solar Cell. Proceedings of the 33rd European Photovoltaic Solar Energy Conference and Exhibition session 1CV.3.85 (2017) 172–177
 C. Dumitru V. Muscurel Ø. Nordseth L. Fara P. Sterian. Optimization of Electro-Optical Performance and Material Parameters for a Tandem Metal Oxide Solar Cell Proceedings of ICCSA 2018 (2018) (to be published)
 ATLAS User’s Manual – Device Simulation Software Silvaco Santa Clara USA (2016)
 Ø. Nordseth I. Chilibon B. G. Svensson R. Kumar S. E. Foss C. Vasiliu R. Iordanescu L. Baschir D. Savastru L. Fara R. Ghita. Characterization of copper oxide photosensitive thin films Proceedings of the ROCAM 2017 Conference 11-14 July 2017 Bucharest (2017) 86
 S. C. Baker-Finch K. R. McIntosh. OPAL 2: Rapid Optical Simulation of Silicon Solar Cells. Proceedings of the 38th IEEE Photovoltaic Specialists Conference Austin (2012) 265-271.
 C. Dumitru V. Muscurel Ø. Nordseth L. Fara P. Sterian. Electrical modeling of the buffer layer for a Cu2O/ZnO solar cell using Silvaco Atlas UPB. Scientific Bulletin Series B 79(2) (2017) 173–178
 F. K. Mugwang’a P. K. Karimi W. K. Njoroge O. Omayio S. M. Waita. Optical characterization of Copper Oxide thin films prepared by reactive dc magnetron sputtering for solar cell applications International Journal on Thin Film Science and Technology 2 (1) (2013) 15-24
 R. E. Brandt M. Young H. H. Park A. Dameron D. Chua Y. S. Lee G. Teeter R. G. Gordon T. Buonassisi. Band Offsets of N-Type Electron-Selective Contacts on Cuprous Oxide (Cu2O) for Photovoltaics Applied Physics Letters 105 (2014) 263901.
 T. Minami Y. Nishi T. Miyata. High-efficiency Cu2O-based heterojunction solar cells fabricated using a Ga2O3 thin film as n-type layer Applied Physics Express 6(4) (2013) 044101
 Ø. Nordseth R. Kumar K. Bergum L. Fara I. Chilibon S. E. Foss E. Monakhov B. G. Svensson. Silicon-based tandem solar cells. Boosting the performance using non-toxic metal oxides Laboratory Journal – Business Web for Users in Science and Industry (2017)