Annihilation upconversion: harvesting the entire deep-red spectral range of the sun irradiation

Ernesta Heinrich; Yuri Avlasevich; Katharina Landfester; Stanislav Baluschev

doi:10.1117/1.JPE.8.022002

6 November 2017 Annihilation upconversion: harvesting the entire deep-red spectral range of the sun irradiation

Ernesta Heinrich, Yuri Avlasevich, Katharina Landfester, Stanislav Baluschev

Author Affiliations +

Journal of Photonics for Energy, Vol. 8, Issue 2, 022002 (November 2017). https://doi.org/10.1117/1.JPE.8.022002

Abstract

Solar energy storage and conversion is a key technology for the future realization of a sustainable energy production worldwide. The utilization of low-energy photons by means of upconversion (UC) processes has the main advantage of the upconversion process and solar energy-harvesting devices being considered and optimized independently, without affecting the particular physical characteristics of the operating sunlight excited material or device architectures. The UC-device must function efficiently with noncoherent light excitation, under light intensities comparable with those obtainable from moderate concentrated sunlight (1 to 20 suns, AM1.5); such a low degree of concentration allows usage of Fresnel-type focusing systems. We report chemical synthesis and efficient functioning of a triplet–triplet annihilation upconversion-based device, harvesting the entire deep-red spectral range of the sun irradiation ( Δλ∼142 nm) in a gap-free manner.

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Ernesta Heinrich, Yuri Avlasevich, Katharina Landfester, and Stanislav Baluschev "Annihilation upconversion: harvesting the entire deep-red spectral range of the sun irradiation," Journal of Photonics for Energy 8(2), 022002 (6 November 2017). https://doi.org/10.1117/1.JPE.8.022002

Received: 29 August 2017; Accepted: 26 September 2017; Published: 6 November 2017

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