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A straightforward chemical approach for excellent In2S3 electron transport layer for high-efficiency perovskite solar cells

机译：一种用于高效钙钛矿太阳能电池的出色In2S3电子传输层的直接化学方法

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Perovskite solar cells (PSCs) have attracted significant attention in recent years owing to some of their advantages: high-efficiency, low cost and ease of fabrication. In perovskite photovoltaic devices, charge transport layers play a vital role for selectively extracting and transporting photo-generated electrons and holes to opposite electrodes. Therefore, it is very important to prepare high-quality charge transport layers using simple processes at low cost. As reported, In _(2) S-based electron selective layers display excellent performance including high solar-cell efficiency and negligible hysteresis. In this study, a simple chemical method was developed to prepare In _(2) S _(3) thin films as the electron selective layers in organic–inorganic hybrid perovskite photovoltaic devices to shorten the fabrication time and simplify the technology, which can provide a new avenue for a low-cost and solution-processed method. By optimizing the preparation conditions, it was demonstrated that In _(2) S _(3) thin film prepared using our straightforward chemical approach have higher electron extraction efficiency and comparable efficiency compared with archetypical TiO _(2) as the electron transport layer (ETL) in perovskite photovoltaic device.
机译：钙钛矿太阳能电池（PSC）近年来因其一些优点而备受关注：高效，低成本和易于制造。在钙钛矿型光伏器件中，电荷传输层在选择性提取光生电子和空穴并将其传输到相对电极方面起着至关重要的作用。因此，使用简单的工艺以低成本制备高质量的电荷传输层非常重要。如所报道的，基于In_（2）的S-基电子选择层显示出优异的性能，包括高的太阳能电池效率和可忽略的磁滞。在这项研究中，开发了一种简单的化学方法来制备In_（2）S _（3）薄膜作为有机-无机杂化钙钛矿光伏器件中的电子选择层，以缩短制造时间并简化技术，从而可以提供低成本和解决方案处理方法的新途径。通过优化制备条件，证明了与传统的TiO_（2）作为电子传输层相比，使用我们直接的化学方法制备的In_（2）S _（3）薄膜具有更高的电子提取效率和相当的效率。钙钛矿型光伏设备中的ETL）。

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