Journal
OPTICS EXPRESS
Volume 23, Issue 7, Pages A263-A278Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.23.00A263
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Funding
- Slovenian Research Agency [P2-0197]
- Ministry of Education, Science and Sport
- European Social Fund [M-1329E]
- Nano-Tera.ch
- Swiss Confederation
- Office Federal de l'Energie (OFEN), Switzerland [SI/501072-01]
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In this study we analyze and discuss the optical properties of various tandem architectures: mechanically stacked (four-terminal) and monolithically integrated (two-terminal) tandem devices, consisting of a methyl ammonium lead triiodide (CH3NH3PbI3) perovskite top solar cell and a crystalline silicon bottom solar cell. We provide layer thickness optimization guidelines and give estimates of the maximum tandem efficiencies based on state-of-the-art sub cells. We use experimental complex refractive index spectra for all involved materials as input data for an in-house developed optical simulator CROWM. Our characterization based simulations forecast that with optimized layer thicknesses the four-terminal configuration enables efficiencies over 30%, well above the current single-junction crystalline silicon cell record of 25.6%. Efficiencies over 30% can also be achieved with a two-terminal monolithic integration of the sub-cells, combined with proper selection of layer thicknesses. (C) 2015 Optical Society of America
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