High-efficiency multi-junction photovoltaic laser power converters for various power and spectral range applications

Simon Fafard

doi:10.1117/12.3001145

9 March 2024 High-efficiency multi-junction photovoltaic laser power converters for various power and spectral range applications

Simon Fafard

Author Affiliations +

Proceedings Volume PC12881, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XIII; PC128810I (2024) https://doi.org/10.1117/12.3001145
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Stable and reliable optical power converting devices have been obtained for various Optical Wireless Power Transmission (OWPT) applications, including power-over-fiber (PoF) or power beaming uses. They are obtained using vertical multi-junction laser power converters (LPCs) based on the GaAs and InP material systems. The LPCs are high-performance photovoltaic (PV) devices typically optimized for a narrow wavelength range. Such Optical Power Converters (OPCs) enable several isolated electrical power or remoter power applications using high-power lasers for their input power. Broadcom’s vertical multijunction PV devices (VEHSA design) permit optical-to-electrical conversion with record efficiencies and output power capabilities. This presentation will review the recent developments in both, the GaAs-based and InP-based systems. For example, high-efficiency and high-power capabilities have recently been demonstrated at ~1480nm for the InP-based PT10-InGaAs/InP, which are designed with 10 InGaAs subcells lattice-matched to InP and connected with transparent tunnel junctions. These long-wavelength OPCs are capable of directly producing electrical output voltages in the 5 V range.

Conference Presentation

Citation Download Citation

Simon Fafard "High-efficiency multi-junction photovoltaic laser power converters for various power and spectral range applications", Proc. SPIE PC12881, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices XIII, PC128810I (9 March 2024); https://doi.org/10.1117/12.3001145

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