Yelzhanova Zhuldyz, Nigmetova Gaukhar, Aidarkhanov Damir, Daniyar Bayan, Baptayev Bakhytzhan, Balanay Mannix P, Jumabekov Askhat N, Ng Annie
Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Nur-Sultan 010000, Kazakhstan.
Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Kabanbay Batyr Ave. 53, Nur-Sultan 010000, Kazakhstan.
Nanomaterials (Basel). 2022 May 15;12(10):1686. doi: 10.3390/nano12101686.
Tin(IV) oxide (SnO) nanostructures, which possess larger surface areas for transporting electron carriers, have been used as an electron transport layer (ETL) in perovskite solar cells (PSCs). However, the reported power conversion efficiencies (PCEs) of this type of PSCs show a large variation. One of the possible reasons for this phenomenon is the low reproducibility of SnO nanostructures if they are prepared by different research groups using various growth methods. This work focuses on the morphological study of SnO nanostructures grown by a solvothermal method. The growth parameters including growth pressure, substrate orientation, DI water-to-ethanol ratios, types of seed layer, amount of acetic acid, and growth time have been systematically varied. The SnO nanomorphology exhibits a different degree of sensitivity and trends towards each growth factor. A surface treatment is also required for solvothermally grown SnO nanomaterials for improving photovoltaic performance of PSCs. The obtained results in this work provide the research community with an insight into the general trend of morphological changes in SnO nanostructures influenced by different solvothermal growth parameters. This information can guide the researchers to prepare more reproducible solvothermally grown SnO nanomaterials for future application in devices.
二氧化锡（SnO）纳米结构具有较大的表面积用于传输电子载流子，已被用作钙钛矿太阳能电池（PSC）中的电子传输层（ETL）。然而，这类PSC报道的功率转换效率（PCE）差异很大。造成这种现象的一个可能原因是，如果不同研究小组使用各种生长方法制备SnO纳米结构，其重现性较低。这项工作聚焦于通过溶剂热法生长的SnO纳米结构的形态学研究。系统地改变了包括生长压力、衬底取向、去离子水与乙醇的比例、种子层类型、乙酸用量和生长时间在内的生长参数。SnO纳米形态对每个生长因素表现出不同程度的敏感性和趋势。对于溶剂热生长的SnO纳米材料，还需要进行表面处理以提高PSC的光伏性能。这项工作中获得的结果为研究界提供了关于不同溶剂热生长参数影响下SnO纳米结构形态变化总体趋势的见解。这些信息可以指导研究人员制备更具重现性的溶剂热生长SnO纳米材料，以供未来在器件中应用。
