SnO2-Ti3C2 Blends as Electron Transport Layer for Efficient and Easily Fabricated Planar Perovskite Solar Cells

IF 2.5 3区工程技术 Q3 ENERGY & FUELS IEEE Journal of Photovoltaics Pub Date : 2024-11-27 DOI:10.1109/JPHOTOV.2024.3496475

Yaling Wang;Yi Ding;Liying Yang;Shougen Yin;Sheng Xu;Haina Zhu;Hong Ge

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Abstract

In this work, the SnO ₂ -Ti ₃ C ₂ hybrid electron transport layer (ETL) was prepared by incorporating two-dimensional Ti ₃ C ₂ -MXene into SnO ₂ and appropriate ultraviolet (UV) ozone treatment. The synergistic effect of Ti ₃ C ₂ introduction and UV ozone treatment on the charge transport capacity of SnO ₂ ETL, interface properties of ETL/perovskite, perovskite morphology, and device performance was systematically investigated. The results show that the introduction of Ti ₃ C ₂ does not affect the morphology and transmittance of SnO ₂ ETL. The perovskite films based on SnO ₂ -Ti ₃ C ₂ are not only dense, but also have smaller surface roughness, more uniform, and larger grain size, even penetrating the entire perovskite film. The surface oxidation of Ti ₃ C ₂ induced by UV-ozone treatment enhanced the charge transport capacity of ETL. The electron extraction and charge transfer at the interface between SnO ₂ -Ti ₃ C ₂ ETL and perovskite are higher, and carrier recombination is effectively suppressed. Perovskite solar cells (PSCs) based on SnO ₂ -Ti ₃ C ₂ ETL have larger charge recombination impedance and higher electron mobility, mainly due to enhanced ETL charge transport and optimization of interface properties. The short-circuit current ( J sc) and filling factor (FF) of PSCs are increased by 5% and 7% respectively, delivering a champion device with a relatively high FF of 79.38% and high power conversion efficiency of 19.52%, as well as good stability. Thus, this study provides a simple and effective method for the preparation of efficient and repeatable PSCs and paves the way for the industrialization of PSCs to a certain extent.

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SnO2-Ti3C2共混物在平面钙钛矿太阳能电池中的电子传输层研究

本文通过在SnO2中掺入二维Ti3C2-MXene，并进行适当的紫外臭氧处理，制备了SnO2- ti3c2杂化电子传输层（ETL）。系统研究了Ti3C2引入和UV臭氧处理对SnO2 ETL的电荷输运能力、ETL/钙钛矿界面性能、钙钛矿形貌和器件性能的协同效应。结果表明，Ti3C2的加入对SnO2 ETL的形貌和透过率没有影响。SnO2-Ti3C2基钙钛矿膜不仅致密，而且表面粗糙度更小，更均匀，晶粒尺寸更大，甚至可以穿透整个钙钛矿膜。紫外-臭氧处理使Ti3C2表面氧化，增强了ETL的电荷输运能力。SnO2-Ti3C2 ETL与钙钛矿界面处的电子萃取和电荷转移较高，载流子复合得到有效抑制。基于SnO2-Ti3C2 ETL的钙钛矿太阳能电池（PSCs）具有更大的电荷复合阻抗和更高的电子迁移率，这主要是由于ETL电荷输运增强和界面性能优化所致。PSCs的短路电流（Jsc）和填充系数（FF）分别提高了5%和7%，从而获得了相对较高的FF（79.38%）和19.52%的功率转换效率，并且具有良好的稳定性。因此，本研究为制备高效、可重复的PSCs提供了一种简单有效的方法，并在一定程度上为PSCs的产业化铺平了道路。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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IEEE Journal of Photovoltaics ENERGY & FUELS-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

7.00

自引率

10.00%

发文量

206

期刊介绍： The IEEE Journal of Photovoltaics is a peer-reviewed, archival publication reporting original and significant research results that advance the field of photovoltaics (PV). The PV field is diverse in its science base ranging from semiconductor and PV device physics to optics and the materials sciences. The journal publishes articles that connect this science base to PV science and technology. The intent is to publish original research results that are of primary interest to the photovoltaic specialist. The scope of the IEEE J. Photovoltaics incorporates: fundamentals and new concepts of PV conversion, including those based on nanostructured materials, low-dimensional physics, multiple charge generation, up/down converters, thermophotovoltaics, hot-carrier effects, plasmonics, metamorphic materials, luminescent concentrators, and rectennas; Si-based PV, including new cell designs, crystalline and non-crystalline Si, passivation, characterization and Si crystal growth; polycrystalline, amorphous and crystalline thin-film solar cell materials, including PV structures and solar cells based on II-VI, chalcopyrite, Si and other thin film absorbers; III-V PV materials, heterostructures, multijunction devices and concentrator PV; optics for light trapping, reflection control and concentration; organic PV including polymer, hybrid and dye sensitized solar cells; space PV including cell materials and PV devices, defects and reliability, environmental effects and protective materials; PV modeling and characterization methods; and other aspects of PV, including modules, power conditioning, inverters, balance-of-systems components, monitoring, analyses and simulations, and supporting PV module standards and measurements. Tutorial and review papers on these subjects are also published and occasionally special issues are published to treat particular areas in more depth and breadth.

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