Data underlying the publication: 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.

本数据集包含投稿于《材料化学A》（*Journal of Materials Chemistry A*）的正稿与支持信息中涉及的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（UV-Vis-NIR spectroscopy）、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，采用多种结构、组分与光电表征手段，对旋涂法制备的含不同组合与浓度的氟化亚锡（SnF₂）、硫氰酸胍（GuaSCN）、碘化胍（GuaI）及硫氰酸铅（Pb(SCN)₂）添加剂的锡铅混合（Sn-Pb）钙钛矿薄膜进行测试，同时对钙钛矿前驱体溶液开展吸收光谱分析。所有测试均在室温下开展，以探究不同添加剂的单独作用与复配协同效果。具体而言，所有稳态微波电导与时间分辨微波电导测试均在氮气氛围下完成。从X射线衍射、紫外-可见-近红外光谱及X射线光电子能谱获取的xy轴数据均导入至Igor Pro（Wavemetrics公司出品）软件中，此类xy轴数据在Igor Pro内以“波（waves）”的形式存储，对应图表中的x、y轴数值。稳态微波电导与时间分辨微波电导的数据直接以“波（waves）”的形式存储于连接对应微波测试装置的计算机内的Igor Pro中，所有数据图表均通过Igor Pro生成。扫描电子显微镜显微图像直接从SEM软件导出为.tiff格式文件保存。如需了解文件格式与命名规则、所有测试值及标签所用单位与缩写，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。强烈建议在对应稿件正式发表后（相关DOI将尽快提供）查阅该稿件，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对应的图表编号。投稿的正稿与支持信息中包含表征仪器的详细参数与额外的数据处理细节。