TY - JOUR
T1 - Large-area luminescent solar concentrator utilizing donor-acceptor luminophore with nearly zero reabsorption
T2 - Indoor/outdoor performance evaluation
AU - Mateen, Fahad
AU - Li, Yilin
AU - Saeed, Muhammad Ahsan
AU - Sun, Yujian
AU - Zhang, Yongcao
AU - Lee, Sae Youn
AU - Hong, Sung Kyu
N1 - Publisher Copyright:
© 2020
PY - 2021/3
Y1 - 2021/3
N2 - 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.
AB - 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.
KW - Aesthetics
KW - Indoor/outdoor illumination
KW - Intramolecular charge transfer
KW - Large Stokes shift
KW - Luminescent solar concentrator
UR - http://www.scopus.com/inward/record.url?scp=85097710434&partnerID=8YFLogxK
U2 - 10.1016/j.jlumin.2020.117837
DO - 10.1016/j.jlumin.2020.117837
M3 - Article
AN - SCOPUS:85097710434
SN - 0022-2313
VL - 231
JO - Journal of Luminescence
JF - Journal of Luminescence
M1 - 117837
ER -