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Title: A transmissive, spectrum-splitting concentrating photovoltaic module for hybrid photovoltaic-solar thermal energy conversion

Here, a spectrum splitting, transmissive concentrating photovoltaic (tCPV) module is proposed and designed for a hybrid photovoltaic-solar thermal(PV/T) system. This module enables the system to more fully utilize the full spectrum of incoming sunlight. By utilizing III-V triple junction solar cells with bandgaps of 2.1eV/1.7eV/1.4eVin the module, ultraviolet (UV) and visible light will be absorbed and converted to electricity, while infrared (IR) light will pass through and be captured by a solar thermal receiver and stored as heat. The stored heat energy may be dispatched as electricity or process heat, as needed.Numerical analysis based on the Finite Elemental Method (FEM), ray tracing, circuit analysis, device modelling, and more is employed to design this tCPV module. According to these simulations, the tCPV module can perform with overall power conversion efficiency exceeding 43.5% for above bandgap (in-band)light under a standard AM1.5D solar spectrum, under an average concentration ratio of 400 suns.Passive and active cooling methods, keeping cells below 110°C, are also investigated and discussed, indicating that a transparent active cooling design could improve the CPV module efficiency by around 1%(absolute), relative to a passive design,by reducing the maximum cell working temperature by ~16°C. Furthermore, cost analysis shows that installation cost of aroundmore » 1.9/W–2.2/W could be reached for the tCPV based PV/T system,which shows a competitive economic advantage compared to a more conventional PV with battery system.« less
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  1. Tulane Univ., New Orleans, LA (United States)
  2. Boeing-Spectrolab Inc., Sylmar, CA (United States)
  3. Otherlab, San Francisco, CA (United States)
  4. Univ. of San Diego, San Diego, CA (United States)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Solar Energy
Additional Journal Information:
Journal Volume: 137; Journal Issue: C; Journal ID: ISSN 0038-092X
Research Org:
Tulane Univ., New Orleans, LA (United States)
Sponsoring Org:
USDOE Advanced Research Projects Agency - Energy (ARPA-E)
Country of Publication:
United States
14 SOLAR ENERGY; Concentrating photovoltaic; Multijunction solar cells; Photovoltaic solar-thermal system; Cost analysis
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1397377