Enhancing optical efficiency of thin-film luminescent solar concentrators by combining energy transfer and stacked design

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• 作者：Marco Carlotti^a ; Giacomo Ruggeri^b ; Fabio Bellina^b ; ^c ; Andrea Pucci^b ; ^c ; ^{andrea.pucci@unipi.it" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Luminescent solar concentrators ; High-energy absorbing fluorophores ; Perylene bisimides ; Energy transfer ; Stacked thin-films
• 刊名：Journal of Luminescence
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：171
• 期：Complete
• 页码：215-220
• 全文大小：632 K

文摘

We report on a new approach aimed at enhancing the optical efficiency of luminescent solar concentrators (LSCs) based on poly(methyl methacrylate) (PMMA) thin-films doped with highly emissive fluorophores. In detail, a series of high-energy absorbing fluorophores (HEF) and perylene bisimides (PBI) red-emitting dyes were utilized in order to favor the collection of a large number of incident photons by the thin-film LSCs. The use of two fluorescent PMMA layers coated on the opposite surfaces of a glass slab was found to effectively increase the light concentration. The worthwhile combination of the appropriate HEF and PBI fluorophores within the secondary (bottom) PMMA layer assured optically efficiencies 10–14% greater than the maximum value of single-dye LSCs.