Lightguide–Lens Array Side–Absorption Concentrated Photovoltaic (CPV) System with an Extended Acceptance Angle
- 1National Central University , , ,
- 2National Central University , , Zhongli District , ,
- 3National Institutes of Applied Research , , ,
Abstract
A lightguide–lens–array side-absorption concentrated photovoltaic system (LLA-SCPV) is proposed and experimentally demonstrated for wide-angle operation. The bottom surface of the lightguide is patterned with reflective V-grooves to direct incident light toward solar cells mounted on its sidewalls. Both the lightguide and the lens array are made of PMMA. The device exhibits a simulated acceptance angle of at least ±12° and an experimental acceptance angle of ±15°. Through an optical efficiency breakdown, manufacturing profile deviations and reduced reflectance of the V-groove facets are identified as the primary factors of the optical loss, while the V-groove profile deviations broaden the angular response. For further performance improvement, simulations under realistic industrial conditions indicate that replacing PMMA with fused silica, increasing V-groove reflectance to 0.86 and reducing the corner radius to 0.1 mm can enhance the optical efficiency to 67.7% while maintaining an acceptance angle of approximately ±15.5°.
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BibTeX
@article{wei2026lightguidelens,
title = {{Lightguide–Lens Array Side–Absorption Concentrated Photovoltaic (CPV) System with an Extended Acceptance Angle}},
author = {An-Chi Wei and Yi-Hung Hsu and Jyh-Rou Sze},
journal = {ACS Omega},
year = {2026},
month = oct,
doi = {10.1021/acsomega.6c05654},
url = {https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c05654/5460519/Lightguide-Lens-Array-Side-Absorption-Concentrated},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Lightguide–Lens Array Side–Absorption Concentrated Photovoltaic (CPV) System with an Extended Acceptance Angle
AU - An-Chi Wei
AU - Yi-Hung Hsu
AU - Jyh-Rou Sze
PY - 2026
DA - 2026/10/29
JO - ACS Omega
DO - 10.1021/acsomega.6c05654
UR - https://pubs.acs.org/acsodf/article/doi/10.1021/acsomega.6c05654/5460519/Lightguide-Lens-Array-Side-Absorption-Concentrated
AB - A lightguide–lens–array side-absorption concentrated photovoltaic system (LLA-SCPV) is proposed and experimentally demonstrated for wide-angle operation. The bottom surface of the lightguide is patterned with reflective V-grooves to direct incident light toward solar cells mounted on its sidewalls. Both the lightguide and the lens array are made of PMMA. The device exhibits a simulated acceptance angle of at least ±12° and an experimental acceptance angle of ±15°. Through an optical efficiency breakdown, manufacturing profile deviations and reduced reflectance of the V-groove facets are identified as the primary factors of the optical loss, while the V-groove profile deviations broaden the angular response. For further performance improvement, simulations under realistic industrial conditions indicate that replacing PMMA with fused silica, increasing V-groove reflectance to 0.86 and reducing the corner radius to 0.1 mm can enhance the optical efficiency to 67.7% while maintaining an acceptance angle of approximately ±15.5°.
SN - 2470-1343
ER -