UV-Vis Diffuse Reflectance Spectroscopy Test (UV-Vis DRS)

Product Name UV-Vis Diffuse Reflectance Spectroscopy Test (UV-Vis DRS) Product Overview English Introduction: UV-Vis Diffuse Reflectance Spectroscopy (UV-Vis DRS) is a core optical characterization technology for solid powders, bulk solids and thin film materials. Different from conventional liquid transmission UV-vis testing, it is specially applied to the optical property analysis of opaque, suspended and powdery solid materials. By collecting the diffuse reflection signals of solid material surfaces for ultraviolet and visible light sources, the technology obtains key parameters such as material reflectance spectrum, characteristic absorption edge, absorption threshold and band gap. It can be used to analyze the light absorption performance, energy level structure, modification effect and optical response mechanism of semiconductor materials, photocatalytic materials, inorganic powders, functional coatings and rare earth luminescent materials. Equipped with Japan Hitachi U-3900 high-end spectrophotometer, this testing service covers a conventional wavelength range of 200–900nm and adapts to various solid powder samples. It requires no complex tablet pretreatment, and features stable test baseline, high spectral resolution and excellent data repeatability. The test results can be directly used for SCI paper publication, material mechanism demonstration, scientific research project conclusion, new material performance calibration and industrial product quality inspection. Technical Parameter English Parameters: Instrument Model: Japan Hitachi U-3900 UV-Vis spectrophotometer, a high-end scientific research-grade special equipment for solid optical characterization, serving as a benchmark testing instrument in the fields of photocatalysis, semiconductors and powder materials Test Wavelength Range: 200nm–900nm, covering ultraviolet and full visible light bands, fully meeting the optical absorption and reflection performance test requirements of solid functional materials Test Mode: Exclusive diffuse reflection test mode with a standard integrating sphere detection system, which accurately collects diffuse reflection light signals on the surface of solid samples and avoids the limitations of transmission testing Wavelength Accuracy: ±0.1nm, wavelength repeatability ≤0.05nm with extremely high spectral positioning accuracy, which can accurately capture subtle shifts of absorption edges and changes in spectral intensity Reflectance Test Accuracy: Extremely low reflectance test error and excellent baseline flatness, which effectively ensures the accurate collection of weak absorption signals of solid materials Optical System: Dual-beam optical design automatically compensates for environmental interference, light source drift and baseline error, with strong long-term test stability and high spectrum consistency Spectral Bandwidth: Continuously adjustable spectral bandwidth, suitable for testing solid samples with different particle sizes and light absorption intensities, with rich and clear spectrum details Light Source System: Combined imported long-life deuterium lamp and tungsten lamp light source with uniform and stable energy in the full UV-Vis band, slow light source attenuation and long service life Data Analysis Function: Built-in band gap calculation, Kubelka-Munk function conversion, automatic reflectance and absorptivity conversion functions, outputting complete analysis data with one click Sample Adaptability: Compatible with various opaque solid materials such as inorganic powders, organic powders, nano-solids, bulk solids and thin films Product Features Exclusive solid test for opaque samples: Adopts the integrating sphere diffuse reflection detection principle, solving the pain point that traditional transmission UV-vis cannot test solid, powder and opaque materials. It is an exclusive core detection method for optical characterization of solid functional materials. Imported high-end Hitachi equipment with authoritative and universal data: Equipped with Japan Hitachi U-3900 scientific research-grade spectrophotometer with top-level industry accuracy. The test data complies with international general standards and can be directly used for top journal papers, patent applications, project conclusions and authoritative test reports. Ultra-high spectral accuracy for subtle optical difference identification: Nano-level wavelength positioning accuracy can accurately capture subtle optical differences such as absorption edge shift, light absorption range broadening and light absorption intensity changes caused by material doping, modification, compounding and calcination processes. No complex pretreatment with convenient and efficient detection: Only 100mg powder sample is required without complex pretreatment such as solvent dissolution, tableting and polishing, which maximally retains the original optical properties of materials and avoids performance interference caused by pretreatment. Integrated data analysis with high scientific research practicability: A single test outputs complete diffuse reflection spectrum, absorption spectrum and band gap values, which can be directly used for photocatalytic performance prediction, energy level structure analysis and material modification mechanism demonstration. Stable full-band scanning with excellent repeatability: Dual-beam optical path and integrating sphere system achieve dual noise reduction with stable baseline and no stray peaks. Multiple test spectra are highly consistent with repeatable and traceable data. High cost-performance standardized service: Transparent pricing without hidden charges and fast delivery within 3-5 working days, adapting to various scenarios such as university scientific research, enterprise R&D, batch sample screening and process optimization control experiments. Application Fields Photocatalytic Material Field: Test of light absorption range and band gap of photocatalytic powders such as TiO₂, g-C₃N₄, zinc oxide and metal sulfides, used for evaluating the light response ability of materials, modified light enhancement effect and correlation analysis of catalytic performance. Semiconductor Material Field: Optical energy level characterization of nano-semiconductor powders, two-dimensional semiconductor materials and wide band gap semiconductor materials, accurate calculation of material band gap width, supporting the research of semiconductor photoelectric performance and device preparation. Rare Earth Luminescent Material Field: Diffuse reflection spectrum test of rare earth doped inorganic powders, luminescent ceramics and fluorescent functional powders, analyzing the regulation mechanism of doped ions on material light absorption, energy level transition and luminescence performance. New Energy Material Field: Optical absorption performance test of photovoltaic materials, energy storage electrode powders and photoelectric conversion materials, researching the light utilization efficiency of materials to guide the formula and process optimization of new energy photoelectric materials. Functional Coating and Thin Film Field: Solid diffuse reflection test of optical coatings, light-shielding thin films, color-changing coatings and protective thin films, evaluating the light transmission, reflection and absorption properties of materials for the R&D of optical functional materials. Inorganic Powder Material Field: Optical performance characterization of metal oxides, non-metallic mineral powders, ceramic powders and composite inorganic powders, used for material purity analysis, structural evolution and performance optimization research. Material Modification Mechanism Research Field: Comparing DRS spectral changes of materials before and after doping, compounding, loading and heat treatment, analyzing the evolution law of light absorption range broadening, band gap regulation and defect energy levels, and providing core data support for material modification mechanism.