Nanopillar arrays of mesoporous Bi2Se3 and CuInSe2 in layer-based perovskite solar cells,IET Optoelectronics

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Nanopillar arrays of mesoporous Bi2Se3 and CuInSe2 in layer-based perovskite solar cells
IET Optoelectronics ( IF 2.3 ) Pub Date : 2023-04-11 , DOI: 10.1049/ote2.12089
Arezo Abdolhay ₁ , Alireza Kashaninia ₁ , Mehdi Banihashemi ₁

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The improvement of light trapping inside the active layer of perovskite solar cells (PSCs) was numerically investigated. The light absorption probability was improved by incorporating periodic arrays of mesoscopic electron-transporting layer into the absorber layer (CH₃NH₃PbI₃) of the PSCs. Accordingly, chalcopyrite (CuInSe₂) and bismuth selenide (Bi₂Se₃) were introduced in the form of hexagonal pillars with an optimum radius of 35 nm and a height of 292 nm. It was found that the proposed PSCs can significantly extend the broadband light absorption from the visible spectrum to the near-infrared (NIR) region compared to planar PSCs that have an identical active layer thickness. After optimization, the PSCs based on MP-CuInSe₂ and MP-Bi₂Se₃ showed the best performance with an enhancement of respectively 32% and 54 % in the photocurrent density, (with values of 29.94 and 34.93 mA.cm⁻²), as compared to the planar PSC (with a photocurrent density of 22.69 mA.cm⁻²). This enhancement resulted from a more effective carrier transport due to the mesoscopic structures.

中文翻译：

层基钙钛矿太阳能电池中介孔 Bi2Se3 和 CuInSe2 的纳米柱阵列

对钙钛矿太阳能电池 (PSC) 活性层内光捕获的改善进行了数值研究。通过将介观电子传输层的周期性阵列结合到PSC 的吸收层 (CH ₃ NH ₃ PbI _{3 ) 中，提高了光吸收概率。}因此，黄铜矿 (CuInSe ₂ ) 和硒化铋 (Bi ₂ Se ₃) 以六角柱的形式引入，最佳半径为 35 nm，高度为 292 nm。结果发现，与具有相同活性层厚度的平面 PSC 相比，所提出的 PSC 可以显着将宽带光吸收从可见光谱扩展到近红外 (NIR) 区域。优化后，基于 MP-CuInSe ₂和 MP-Bi ₂ Se ₃的 PSC表现出最佳性能，光电流密度分别提高了 32% 和 54 %，（值为 29.94 和 34.93 mA.cm ^-2），与平面 PSC 相比（光电流密度为 22.69 mA.cm ^-2). 这种增强是由于介观结构导致更有效的载流子传输。

更新日期：2023-04-11

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