Data underlying the publication (under review): Separate and Combined Effect of Gua+ and SCN- Ions on the Carrier Transport in Mixed Sn-Pb Perovskites

Data for the XRD, XPS, UV-Vis-NIR spectroscopy, SSMC and TRMC results, as well as the SEM images, in the main manuscript and Supporting Information under review in <em>Journal of Materials Chemistry A</em>.The raw data were collected in the years 2024-2025, using various structural, compositional, and optoelectronic characterization methods on solution-based spin-coated mixed tin-lead (Sn-Pb) perovskite thin films with varying combinations and concentrations of tin fluoride (SnF2), guanidinium thiocyanate (GuaSCN), guanidinium iodide (GuaI), and lead thiocyanate (Pb(SCN)2) additives, alongside absorption spectroscopy analysis on perovskite precursor solutions. All measurements were conducted at room temperature, to study the separate and combined effect of the different additives. More specifically, all SSMC and TRMC measurements were conducted under nitrogen. The xy data obtained from X-ray diffraction (XRD), UV-Vis-NIR spectroscopy, and X-ray photoelectron spectroscopy (XPS) were imported into Igor Pro (Wavemetrics). In Igor Pro, these xy data are stored as "waves," corresponding to the values on the x and y axes in the plots. Data for Steady State Microwave Conductance (SSMC) and Time-Resolved Microwave Conductivity (TRMC) were collected directly as waves in Igor Pro on the computers connected to the respective microwave-based setups. Igor Pro was used to generate all data plots. The SEM micrographs were directly saved as .tiff files from the SEM software.For further information on file formats and naming, the units and abbreviations used for all measured values and labels, and instructions for opening or modifying Igor Pro files, please refer to the README.pdf included in the dataset. It is strongly recommended to consult the corresponding manuscript once it is published (the corresponding DOI will be provided as soon as possible) for guidance on the files in these datasets, as each file name includes a reference to its associated figure. The main manuscript and Supporting Information contains details about the characterization instruments and additional data processing specifics.

本数据集涵盖投稿于《Journal of Materials Chemistry A》（处于评审阶段）的正文中及补充材料所涉及的X射线衍射（X-ray diffraction, XRD）、X射线光电子能谱（X-ray photoelectron spectroscopy, XPS）、紫外-可见-近红外光谱（ultraviolet-visible-near-infrared spectroscopy, UV-Vis-NIR）、稳态微波电导（Steady State Microwave Conductance, SSMC）、时间分辨微波电导（Time-Resolved Microwave Conductivity, TRMC）测试数据，以及扫描电子显微镜（Scanning Electron Microscopy, SEM）图像数据。原始数据采集于2024至2025年，通过多种结构、组分及光电子学表征手段，对基于溶液旋涂法制备的锡铅混合（Sn-Pb）钙钛矿薄膜开展测试；该系列薄膜掺入了不同配比与浓度的氟化亚锡（tin fluoride, SnF₂）、硫氰酸胍（guanidinium thiocyanate, GuaSCN）、碘化胍（guanidinium iodide, GuaI）及硫氰酸铅（lead thiocyanate, Pb(SCN)₂）添加剂，同时还包含钙钛矿前驱体溶液的吸收光谱分析数据。所有测试均在室温环境下开展，旨在探究不同添加剂单独使用与复合使用时的影响。具体而言，所有SSMC与TRMC测试均在氮气氛围中进行。从X射线衍射（XRD）、紫外-可见-近红外光谱（UV-Vis-NIR）及X射线光电子能谱（XPS）获取的xy轴数据已导入Igor Pro（Wavemetrics公司开发）中，此类xy数据以“波”（waves）的形式存储，对应绘图中的x轴与y轴数值。稳态微波电导（SSMC）与时间分辨微波电导（TRMC）的数据，则直接通过对应微波测试装置连接的计算机，以Igor Pro可识别的“波”（waves）格式采集存储。所有数据绘图均由Igor Pro生成。扫描电子显微镜（SEM）显微图像直接从SEM配套软件导出为.tiff格式文件。如需了解本数据集的文件格式与命名规则、所有测试值及标签所用的单位与缩写，以及打开或修改Igor Pro文件的操作指南，请参阅数据集内附带的README.pdf文件。强烈建议在正式出版后查阅对应稿件（相关数字对象标识符（Digital Object Identifier, DOI）将尽快提供），以获取本数据集文件的使用指引——因每个文件名均标注了其关联的图表编号。本研究的主稿件与补充材料中，详细说明了表征仪器的参数及额外数据处理的具体规范。