Introduction
This application note explores the measurement of Total Solar Reflectance (TSR), a critical factor in determining a material's ability to reflect solar radiation across the UV, visible, and infrared spectrum. TSR is vital in solar energy applications, influencing the performance of building materials, coatings, and photovoltaic devices. Using the LAMBDA 1050+ UV/Vis/NIR Spectrophotometer and following ASTM E 903-20 standards, the study evaluates four different paint samples—white, grey, blue, and dark green—applied to black opaque supports. The results show that white paint exhibited the highest TSR, while dark green reflected the least. These insights enable better optimization of material properties for improved energy efficiency, thermal regulation, and environmental sustainability in various industries.
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