Transmissive concentrator multijunction solar cells with over 47% in-band power conversion efficiency

Xu, Qi; Ji, Yaping; Krut, Dimitri D.; Ermer, Jim H.; Escarra, Matthew D.

doi:10.1063/1.4967376

Transmissive concentrator multijunction solar cells with over 47% in-band power conversion efficiency

Journal Article · Sun Nov 06 23:00:00 EST 2016 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4967376· OSTI ID:1461972

Xu, Qi ^[1]; Ji, Yaping ^[2]; Krut, Dimitri D. ^[3]; Ermer, Jim H. ^[3]; ^[2]

Tulane Univ., New Orleans, LA (United States); Tulane University
Tulane Univ., New Orleans, LA (United States)
Boeing-Spectrolab, Inc., Sylmar, CA (United States)

Transmissive concentrator multijunction (TCMJ) solar cells with over 47% in-band power conversion efficiency (PCE) have been designed and realized. These TCMJ solar cells have been characterized under 1 sun and concentrated 500 sun solar spectra, showing that the PCE for in-band light (photon energies above the cell’s lowest bandgap) can reach up to 47.6% (29.5% for the full solar spectrum). Temperature coefficients of electrical parameters (V_oc, J_sc, FF) have been derived from measurements within the temperature range of 20°C to 130°C, showing linear variations versus temperature change. Here, optical measurements demonstrate that the cells show 76.5% solar-weighted optical transmission for the out-of-band light (photon energy below the cell’s lowest bandgap). This TCMJ solar cell exhibits promising spectrum splitting capability, which has potential for use in hybrid photovoltaic-solar thermal applications.

View Accepted Manuscript (DOE)

Research Organization:: Tulane Univ., New Orleans, LA (United States)

Sponsoring Organization:: USDOE Advanced Research Projects Agency - Energy (ARPA-E)

Grant/Contract Number:: AR0000473

OSTI ID:: 1461972

Alternate ID(s):: OSTI ID: 1421244

Journal Information:: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 19 Vol. 109; ISSN 0003-6951

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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