Large-area luminescent solar concentrator utilizing donor-acceptor luminophore with nearly zero reabsorption: Indoor/outdoor performance evaluation

Fahad Mateen, Yilin Li, Muhammad Ahsan Saeed, Yujian Sun, Yongcao Zhang, Sae Youn Lee, Sung Kyu Hong

Research output: Contribution to journalArticlepeer-review

38 Scopus citations

Abstract

Luminescent solar concentrators (LSCs) are light-guides doped with luminophores that can spectrally and spatially concentrate solar radiation. With the ability to harvest both direct and diffuse light, LSCs are considered attractive prospects for building-integrated photovoltaic applications. However, it is still challenging to develop organic luminophores based large-area LSCs that work well in various illumination conditions. Reabsorption, caused by small stokes shift of typical organic luminophores, often limits the performance of large-area LSCs. This study reports an indoor and outdoor performance of large-area (≥100 cm2) LSCs that employ a donor-acceptor luminophore with a large Stokes shift. The largest (400 cm2) LSC demonstrates an optical efficiency (ηopt) of 5.5% and 7.6% under outdoor (AM 1.5G) and indoor (white LED) illuminations, respectively. Furthermore, the aesthetic and visual comfort parameters such as chromaticity coordinates, color rendering index, and average visible transmission are obtained that suggest the suitability of our LSCs for a built environment.

Original languageEnglish
Article number117837
JournalJournal of Luminescence
Volume231
DOIs
StatePublished - Mar 2021

Keywords

  • Aesthetics
  • Indoor/outdoor illumination
  • Intramolecular charge transfer
  • Large Stokes shift
  • Luminescent solar concentrator

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