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首页> 外文期刊>Photovoltaics, IEEE Journal of >Organic–Inorganic Halide Perovskites: Perspectives for Silicon-Based Tandem Solar Cells
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Organic–Inorganic Halide Perovskites: Perspectives for Silicon-Based Tandem Solar Cells

机译:有机-无机卤化物钙钛矿:硅基串联太阳能电池的前景。

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摘要

We investigate the efficiency potential of organic–inorganic halide perovskite/crystalline silicon tandem solar cells, a new class of photovoltaic devices targeting long-term cost reductions by ultrahigh conversion efficiencies. Methyl ammonium lead triiodide perovskite solar cells are particularly interesting as the top cell in Si-based tandem devices due to their suitable band gap, high photovoltage, and low sub-bandgap absorption. We derive optical models for a perovskite/Si tandem cell with Lambertian light trapping in the perovskite top cell, as well as for a top cell in the single pass limit. We find that unlike for other thin-film device architectures, light trapping is not required for the triiodide perovskite/Si tandem to reach matched top and bottom cell currents. While a Lambertian top cell could be employed in a four-terminal tandem, a top cell in the single pass limit enables a current-matched monolithic device with realistic top cell thicknesses. We calculate a limiting efficiency of 35.67% for an ideal (no parasitic absorption, ideal contacts) monolithic tandem, assuming a top cell open-circuit voltage of 1100 mV.
机译:我们研究了有机-无机卤化物钙钛矿/晶体硅串联太阳能电池的效率潜力,这是一类新型的光伏设备,旨在通过超高转换效率来长期降低成本。甲基铵三碘化铅钙钛矿型太阳能电池由于其合适的带隙,高光电压和低子带隙吸收性而作为基于硅的串联器件中的顶层电池特别受关注。我们得出钙钛矿/ Si串联电池的光学模型,在钙钛矿顶部电池中具有朗伯光陷阱,并且在单次通过极限中也对顶部电池具有光学模型。我们发现,与其他薄膜器件架构不同,三碘化物钙钛矿/ Si串联不需要光捕获来达到匹配的顶部和底部电池电流。尽管可以在四端子串联中使用Lambertian顶部电池,但单次通过极限中的顶部电池可以使电流匹配的单片器件具有逼真的顶部电池厚度。假设顶部电池开路电压为1100mV,我们计算出理想的(无寄生吸收,理想的接触)串联串联的极限效率为35.67%。

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