Fabrication of perovskite solar cells using novel 2D/3D‐blended perovskite single crystals,International Journal of Energy Research

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Fabrication of perovskite solar cells using novel 2D/3D‐blended perovskite single crystals
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2020-11-09 , DOI: 10.1002/er.6183
Muhammad Younas ₁ , Mohammed A. Gondal ₁ , Mohamed A. Dastageer ₁

Affiliation

Single crystals of 2D/3D‐blended perovskite were grown by inverse temperature crystallization method, and used this material for the fabrication of perovskite solar cells (PSC). Although, 3D perovskite is known for its high photovoltaic efficiency due to intense visible light absorbance, the hydrophilic organic cation in its structure makes it susceptible to rapid moisture induced structural degradation. When the 2D perovskite, possessing the long chains of hydrophobic organic molecule is incorporated in the 3D counterpart, moisture induced degradation is reduced, but with increased grain boundaries. The novelty of this work is to grow the single crystal of the 2D/3D‐blended perovskite, aiming to enhance the carrier mobility by reducing the grain boundaries, trap state densities, and charge recombination, while preserving the improved material stability. PSCs with polycrystalline 3D perovskite, single crystal of 3D perovskite, and single crystal of 2D/3D‐blended perovskite yielded efficiencies of 4.55%, 6.37% and 5.37% respectively.

中文翻译：

使用新型2D / 3D混合钙钛矿单晶制造钙钛矿太阳能电池

2D / 3D混合钙钛矿的单晶是通过逆温度结晶法生长的，并将这种材料用于钙钛矿太阳能电池（PSC）的制造。尽管3D钙钛矿因强烈的可见光吸收而具有很高的光伏效率，但其结构中的亲水性有机阳离子使其易于受潮气引起的快速结构降解的影响。当将具有疏水性有机分子长链的2D钙钛矿掺入3D对应物中时，水分诱导的降解减少，但晶界增加。这项工作的新颖之处在于生长2D / 3D混合钙钛矿的单晶，旨在通过减少晶界，陷阱能级密度和电荷重组来提高载流子迁移率，同时保持改善的材料稳定性。具有多晶3D钙钛矿，3D钙钛矿的单晶和2D / 3D混合钙钛矿的单晶的PSC的效率分别为4.55％，6.37％和5.37％。

更新日期：2020-11-09

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