Study of gold and bismuth electrical contacts to a MoS2 monolayer

Data supporting the publication A. Zielińska et al., Study of gold and bismuth electrical contacts to a MoS2 monolayer, Solid State Communications 397, 115824 (2025).The xlsx files include all data that was presented in the manuscript. The files are named as the corresponding figures.Electrical measurements: I-V characteristics were measured in a wide temperature range in a superconducting magnet system (Oxford Instruments). Yokogawa 7651 was used as a voltage source, and Aglient 34410A multimeter with Ithaco 1211 preamplifier were used to measure drain- source voltage. Keithley SMU 2400 source meter was used to set backgate voltages.Optical spectroscopy: measurements were performed in an optical helium flow cryostat (Oxford Instruments). The excitation source for microphotoluminescence was a 532 nm continuous wave laser. The white light source for microreflectance was a Tungsten-Halogen Light Source (Thorlabs). The light was spatially filtered through a 50 μm pinhole, which yields the final spot size of ∼ 4 μm. The laser light and the white light were focused on the sample surface by 0.75 NA and 50× microscope objective (Mitutoyo). The same objective was used to collect the output signal, which was then directed to the spectrometer (500 mm focal length, 300 groove/mm grating and 150 μm slit width) equipped with a liquid nitrogen cooled CCD camera (Princeton Instruments).

本数据集支撑A. Zielińska等人的发表论文《二硫化钼（MoS₂）单层与金、铋电学接触的研究》（原文标题为Study of gold and bismuth electrical contacts to a MoS₂ monolayer），刊载于《固态通讯（Solid State Communications）》2025年第397卷，文章编号115824。本次提供的XLSX格式文件包含论文手稿中呈现的全部实验数据，文件名与对应图表名称一致。
电学测试：在超导磁体系统（牛津仪器，Oxford Instruments）的宽温度区间内开展了I-V特性测试。测试采用横河7651（Yokogawa 7651）作为电压源，使用安捷伦34410A万用表（Aglient 34410A）搭配Ithaco 1211前置放大器测量漏源电压；背栅电压的设置采用吉时利SMU 2400源表（Keithley SMU 2400）。
光学光谱测试：测试在光学氦流低温恒温器（牛津仪器，Oxford Instruments）中完成。显微光致发光的激发源为532 nm连续波激光器；显微反射光谱的白光源采用索雷博（Thorlabs）公司的卤钨灯（Tungsten-Halogen Light Source）。光线通过50 μm针孔进行空间滤波，最终光斑尺寸约为4 μm。激光与白光通过数值孔径0.75、50倍的三丰显微镜物镜（Mitutoyo）聚焦至样品表面，该物镜同时用于收集输出信号，信号随后被送入配备液氮冷却CCD相机（普林斯顿仪器，Princeton Instruments）的光谱仪，该光谱仪参数为：焦距500 mm、光栅刻线密度300条/毫米、狭缝宽度150 μm。