2023/03/30 by Tomi K. Baikie, James Xiao, Baikie, Tomi K. +7
Chemistry · Engineering · Physics and Astronomy · #FOS: Physical sciences #Optics (physics.optics) #Organic Light-Emitting Diodes Research #Photochemistry and Electron Transfer Studies #Quantum optics and atomic interactions
paper · pdf · doi:10.48550/arxiv.2303.17411
openalex publication_date 2023/03/30 · openalex created_date 2023/04/05 · openalex updated_date 2026/07/28
Luminescent solar concentrators (LSCs) are able to concentrate both direct and diffuse solar radiation and this ability has led to great interest in using them to improve solar energy capture when coupled to traditional photovoltaics (PV). In principle, a large area LSC could concentrate light onto a much smaller area of PV, thus reducing costs or enabling new architectures. However, LSCs suffer from various optical losses which are hard to quantify using simple measurements of power conversion efficiency. Here, we show that spatially resolved photoluminescence quantum efficiency measurements on large area LSCs can be used to resolve various losses processes such as out-coupling, self-absorption via emitters and self-absorption from the LSC matrix. Further, these measurements allow for the extrapolation of device performance to arbitrarily large LSCs. Our results provide insight into the optimization of optical properties and guide the design of future LSCs for improved solar energy capture.