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Design Criteria for Micro-Optical Tandem Luminescent Solar Concentrators

Needell, David R. and Ilic, Ognjen and Bukowsky, Colton R. and Nett, Zach and Xu, Lu and He, Junwen and Bauser, Haley and Lee, Benjamin G. and Geisz, John F. and Nuzzo, Ralph G. and Alivisatos, A. Paul and Atwater, Harry A. (2018) Design Criteria for Micro-Optical Tandem Luminescent Solar Concentrators. IEEE Journal of Photovoltaics, 8 (6). pp. 1560-1567. ISSN 2156-3381. doi:10.1109/JPHOTOV.2018.2861751.

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Luminescent solar concentrators (LSCs) harness light generated by luminophores embedded in a light-trapping waveguide to concentrate onto smaller cells. LSCs can absorb both direct and diffuse sunlight, and thus can operate as flat plate receivers at a fixed tilt and with a conventional module form factor. However, current LSCs experience significant power loss through parasitic luminophore absorption and incomplete light trapping by the optical waveguide. Here, we introduce a tandem LSC device architecture that overcomes both of these limitations, consisting of a poly(lauryl methacrylate) polymer layer with embedded cadmium selenide core, cadmium sulfide shell (CdSe/CdS) quantum dot (QD) luminophores and an InGaP microcell array, which serves as high bandgap absorbers on the top of a conventional Si photovoltaic. We investigate the design space for a tandem LSC, using experimentally measured performance parameters for key components, including the InGaP microcell array, CdSe/CdS QDs, and spectrally selective waveguide filters. Using a Monte Carlo ray-tracing model, we compute the power conversion efficiency for a tandem LSC module with these components to be 29.4% under partially diffuse illumination conditions. These results indicate that a tandem LSC-on-Si architecture could significantly improve upon the efficiency of a conventional Si photovoltaic cell.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Needell, David R.0000-0001-8343-5883
Bukowsky, Colton R.0000-0003-3577-8050
Nett, Zach0000-0002-8086-4380
Xu, Lu0000-0002-0021-9876
Bauser, Haley0000-0002-9677-3301
Lee, Benjamin G.0000-0002-1285-6522
Geisz, John F.0000-0003-4818-653X
Nuzzo, Ralph G.0000-0003-2310-2045
Alivisatos, A. Paul0000-0001-6895-9048
Atwater, Harry A.0000-0001-9435-0201
Alternate Title:Micro-optical Tandem Luminescent Solar Concentrators
Additional Information:© 2018 IEEE. Manuscript received March 9, 2018; revised May 19, 2018; accepted July 22, 2018. Date of publication August 10, 2018; date of current version October 26, 2018. This work was supported by the U.S. Department of Energy, Advanced Research Projects Agency for Energy under Grant DE-AR0000627.
Funding AgencyGrant Number
Department of Energy (DOE)DE-AR0000627
Subject Keywords:III–V concentrator photovoltaics (PV), luminescent devices, Monte Carlo methods, quantum dots (QDs), tandem PV
Issue or Number:6
Record Number:CaltechAUTHORS:20180122-084304646
Persistent URL:
Official Citation:D. R. Needell et al., "Design Criteria for Micro-Optical Tandem Luminescent Solar Concentrators," in IEEE Journal of Photovoltaics, vol. 8, no. 6, pp. 1560-1567, Nov. 2018. doi: 10.1109/JPHOTOV.2018.2861751
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:84439
Deposited By: Tony Diaz
Deposited On:23 Jan 2018 14:01
Last Modified:15 Nov 2021 20:19

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