6 November 2017 Annihilation upconversion: harvesting the entire deep-red spectral range of the sun irradiation
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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 ( Δ λ 142    nm ) in a gap-free manner.
© 2017 Society of Photo-Optical Instrumentation Engineers (SPIE)
Ernesta Heinrich, Ernesta Heinrich, Yuri Avlasevich, Yuri Avlasevich, Katharina Landfester, Katharina Landfester, Stanislav Baluschev, 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 . Submission: Received: 29 August 2017; Accepted: 26 September 2017
Received: 29 August 2017; Accepted: 26 September 2017; Published: 6 November 2017
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