TY - JOUR
T1 - Lateral spectrum splitting system with perovskite photovoltaic cells
AU - Chrysler, Benjamin D.
AU - Shaheen, Sean E.
AU - Kostuk, Raymond K.
N1 - Funding Information:
This paper was based on work included in Benjamin Chrysler’s PhD dissertation. The authors would like to acknowledge the valuable comments and suggestions from committee members Yuzuru Takashima, Robert Norwood, and Pierre Blanche. The authors would also like to acknowledge support from NSF/DOE ERC Cooperative Agreement No. EEC-1041895, NSF Grant Nos. ECCS-1405619 and DMR-1906029, and NREL partner authorization UGA-0-41026-117. Benjamin Chrysler would like to acknowledge support from the NSF Graduate Research Fellowship Program DGE-1143953. Any opinions, findings, recommendations expressed in this material are those of the authors and do not necessarily reflect the view of the National Science Foundation.
Publisher Copyright:
© 2022 Society of Photo-Optical Instrumentation Engineers (SPIE).
PY - 2022/4/1
Y1 - 2022/4/1
N2 - We examine the potential of a multijunction spectrum-splitting photovoltaic (PV) solar energy system with perovskite PV cells. Spectrum splitting allows combinations of different energy band gap PV cells that are laterally separated and avoids the complications of fabricating tandem stack architectures. Volume holographic optical elements have been shown to be effective for the spectrum-splitting operation and can be incorporated into compact module packages. However, one of the remaining issues for spectrum splitting systems is the availability of low-cost wide band gap and intermediate band gap cells that are required for realizing high overall conversion efficiency. Perovskite PV cells have been fabricated with a wide range of band gap energies that potentially satisfy the requirements for multijunction spectrum-splitting systems. A spectrum-splitting system is evaluated for a combination of perovskite PV cells with energy band gaps of 2.30, 1.63, and 1.25 eV and with conversion efficiencies of 10.4%, 21.6%, and 20.4%, respectively, which have been demonstrated experimentally in the literature. First, the design of a cascaded volume holographic lens for spectral separation in three spectral bands is presented. Second, a rigorous coupled wave model is developed for computing the diffraction efficiency of a cascaded hologram. The model accounts for cross-coupling between higher diffraction orders in the upper and lower holograms, which previous models have not accounted for but is included here with the experimental verification. Lastly, the optical losses in the system are analyzed and the hypothetical power conversion efficiency is calculated to be 26.7%.
AB - We examine the potential of a multijunction spectrum-splitting photovoltaic (PV) solar energy system with perovskite PV cells. Spectrum splitting allows combinations of different energy band gap PV cells that are laterally separated and avoids the complications of fabricating tandem stack architectures. Volume holographic optical elements have been shown to be effective for the spectrum-splitting operation and can be incorporated into compact module packages. However, one of the remaining issues for spectrum splitting systems is the availability of low-cost wide band gap and intermediate band gap cells that are required for realizing high overall conversion efficiency. Perovskite PV cells have been fabricated with a wide range of band gap energies that potentially satisfy the requirements for multijunction spectrum-splitting systems. A spectrum-splitting system is evaluated for a combination of perovskite PV cells with energy band gaps of 2.30, 1.63, and 1.25 eV and with conversion efficiencies of 10.4%, 21.6%, and 20.4%, respectively, which have been demonstrated experimentally in the literature. First, the design of a cascaded volume holographic lens for spectral separation in three spectral bands is presented. Second, a rigorous coupled wave model is developed for computing the diffraction efficiency of a cascaded hologram. The model accounts for cross-coupling between higher diffraction orders in the upper and lower holograms, which previous models have not accounted for but is included here with the experimental verification. Lastly, the optical losses in the system are analyzed and the hypothetical power conversion efficiency is calculated to be 26.7%.
KW - cascaded hologram
KW - diffraction
KW - holography
KW - multijunction
KW - perovskites
KW - photovoltaics
KW - rigorous coupled wave analysis
KW - spectrum splitting
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U2 - 10.1117/1.JPE.12.022206
DO - 10.1117/1.JPE.12.022206
M3 - Article
AN - SCOPUS:85133572387
SN - 1947-7988
VL - 12
JO - Journal of Photonics for Energy
JF - Journal of Photonics for Energy
IS - 2
M1 - 022206
ER -