Scattering-Enhanced Light Extraction for Radiative Thermal Load Mitigation in Fluorescent Films.

ABSTRACT: To mitigate solar heating in colored objects, fluorescent coloration has been proposed as an alternative to traditional absorptive pigments. However, the Stokes-shifted photons generated by fluorophores predominantly remain trapped by total internal reflection (TIR), increasing the parasitic solar absorption and the radiative thermal load. This work introduces a scattering-enhanced light extraction strategy that overcomes the TIR limit in fluorescent films. A sequential quadratic programming-driven optimization model establishes the theoretical minimum radiative thermal load for both traditional and fluorescent-colored surfaces. Results reveal that while traditional absorption-based color achieves only 19.3% sub-ambient cooling chromaticity in the CIE 1931 color space, light extraction tec

SUBMITTER: She C 

PROVIDER: S-EPMC12631933 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature