Issue 33, 2020

Dual-sensitized upconversion-assisted, triple-band absorbing luminescent solar concentrators

Abstract

Luminescent solar concentrator-photovoltaic systems (LSC-PV) harvest solar light by using transparent photoluminescent plates, which is expected to be particularly useful for building-integrated PV applications. LSC panels that absorb multiple wavelength bands are required to achieve high power conversion efficiency (PCE). In this study, we demonstrate a pair of downshift LSC and photon upconversion (UC) LSC, absorbing triple bands (violet, green, and red light). The UC is obtained by energy transfer and triplet–triplet annihilation between sensitizer and emitter dyes. In particular, we exploit the dual sensitizer to obtain absorption of the dual wavelength band. The couple with the UC LSC obtains photoluminescence of a single visible wavelength band from the LSC, which enables the use of wide bandgap solar cells to absorb it. Here, we apply mixed-cation perovskite solar cells (PSCs) with high absorption coefficients, especially at visible wavelengths. In our triple-band-absorbing LSC-PSC, we achieve a maximum PCE of 8.99%.

Graphical abstract: Dual-sensitized upconversion-assisted, triple-band absorbing luminescent solar concentrators

Supplementary files

Article information

Article type
Paper
Submitted
05 févr. 2020
Accepted
05 mai 2020
First published
06 mai 2020

Nanoscale, 2020,12, 17265-17271

Dual-sensitized upconversion-assisted, triple-band absorbing luminescent solar concentrators

S. K. Nam, K. Kim, J. Kang and J. H. Moon, Nanoscale, 2020, 12, 17265 DOI: 10.1039/D0NR01008A

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