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首页> 外文期刊>Journal of Materials Chemistry, A. Materials for energy and sustainability >Morphological control of organic-inorganic perovskite layers by hot isostatic pressing for efficient planar solar cells
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Morphological control of organic-inorganic perovskite layers by hot isostatic pressing for efficient planar solar cells

机译：通过热等静压进行有机-无机钙钛矿层的形态控制，以形成高效的平面太阳能电池

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摘要

Morphological control of organic-inorganic perovskite layers is crucial for efficient planar solar cells. In this study, we show that hot isostatic pressing (HIP) of perovskite layers using a pressure of 200 MPa in 90 degrees C water is very effective for improving the perovskite film morphology. After HIP treatment, undesirable pin holes and spatial gaps between crystals in the perovskite layers were significantly reduced. Improved crystallinity and enhanced diffusion lengths for both electrons and holes were also confirmed in the HIP-treated perovskite layers. Solar cells containing the perovskite layers as light absorbers were fabricated and characterized under simulated solar light (AM1.5G, 100 mW cm (-2)). The HIP treatment induced a marked enhancement of short-circuit current density, open-circuit voltage, fill factor, and power conversion efficiency because of the improved morphology and crystallinity and enhanced carrier diffusion. The HIP-treated solar cells achieved efficiencies of 10.6 +/- 0.7%, which are about 1.5 times higher than those of the untreated solar cells (7.20 +/- 0.59%).
机译：有机-无机钙钛矿层的形态控制对于高效平面太阳能电池至关重要。在这项研究中，我们表明，在90摄氏度的水中使用200 MPa的压力对钙钛矿层进行热等静压（HIP）对于改善钙钛矿膜的形态非常有效。经过HIP处理后，钙钛矿层中不希望有的针孔和晶体之间的空间间隙大大减少。在HIP处理的钙钛矿层中也证实了结晶度的提高以及电子和空穴的扩散长度的增加。制备了含有钙钛矿层作为光吸收剂的太阳能电池，并在模拟太阳光（AM1.5G，100 mW cm（-2））下进行了表征。由于改善的形态和结晶度以及增强的载流子扩散，HIP处理导致短路电流密度，开路电压，填充因子和功率转换效率显着提高。经HIP处理的太阳能电池的效率为10.6 +/- 0.7％，约为未处理的太阳能电池（7.20 +/- 0.59％）的1.5倍。

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