Giaccherini Andrea, Cucinotta Giuseppe, Martinuzzi Stefano, Berretti Enrico, Oberhauser Werner, Lavacchi Alessandro, Lepore Giovanni Orazio, Montegrossi Giordano, Romanelli Maurizio, De Luca Antonio, Innocenti Massimo, Moggi Cecchi Vanni, Mannini Matteo, Buccianti Antonella, Di Benedetto Francesco
Department of Earth Sciences, University of Florence, Via La Pira 4, 50121 Firenze, Italy.
Department of Industrial Engineering, University of Florence, Via di S. Marta 3, 50139 Firenze, Italy.
Beilstein J Nanotechnol. 2019 Oct 29;10:2073-2083. doi: 10.3762/bjnano.10.202. eCollection 2019.
The new generation of solar cells aims to overcome many of the issues created by silicon-based devices (e.g., decommissioning, flexibility and high-energy production costs). Due to the scarcity of the resources involved in the process and the need for the reduction of potential pollution, a greener approach to solar cell material production is required. Among others, the solvothermal approach for the synthesis of nanocrystalline Cu-Sn-S (CTS) materials fulfils all of these requirements. The material constraints must be considered, not only for the final product, but for the whole production process. Most works reporting the successful synthesis of CTS have employed surfactants, high pressure or noxious solvents. In this paper, we demonstrate the synthesis of nanocrystalline kuramite by means of a simpler, greener and scalable solvothermal synthesis. We exploited a multianalytical characterization approach (X-ray diffraction, extended X-ray absorption fine structure, field emission scanning electron microscopy, Raman spectroscopy and electronic microprobe analysis (EMPA)) to discriminate kuramite from other closely related polymorphs. Moreover, we confirmed the presence of structural defects due to a relevant antisite population.
新一代太阳能电池旨在克服硅基器件所产生的诸多问题（例如退役、灵活性以及高能源生产成本）。鉴于该过程中所涉及资源的稀缺性以及减少潜在污染的需求，需要一种更环保的太阳能电池材料生产方法。其中，用于合成纳米晶Cu-Sn-S（CTS）材料的溶剂热法满足了所有这些要求。不仅要考虑最终产品的材料限制，还要考虑整个生产过程的材料限制。大多数报道CTS成功合成的研究都使用了表面活性剂、高压或有毒溶剂。在本文中，我们展示了通过一种更简单、更环保且可扩展的溶剂热合成方法来合成纳米晶库拉米特。我们采用了多分析表征方法（X射线衍射、扩展X射线吸收精细结构、场发射扫描电子显微镜、拉曼光谱和电子微探针分析（EMPA））来区分库拉米特与其他密切相关的多晶型物。此外，我们证实了由于相关反位原子数量而存在结构缺陷。
