Shifting the Sun: Solar Spectral Conversion and Extrinsic Sensitization in Natural and Artificial Photosynthesis

Advanced Science

Lothar Wondraczek¹  Esa Tyystjärvi³  Jorge Méndez-Ramos²  Frank A. Müller¹ 

[1] Otto Schott Institute of Materials Research, University of Jena, Jena, Germany;Department of Physics, University La Laguna, La Laguna, Tenerife, Spain;Department of Biochemistry and Food Chemistry, University of Turku, Turku, Finland

关键词: artificial photosynthesis;    photosynthesis;    solar spectral conversion;    solar‐to‐fuel;    water splitting;   

DOI  :  10.1002/advs.201500218

来源: Wiley

【 摘 要 】

Abstract

Solar energy harvesting is largely limited by the spectral sensitivity of the employed energy conversion system, where usually large parts of the solar spectrum do not contribute to the harvesting scheme, and where, of the contributing fraction, the full potential of each photon is not efficiently used in the generation of electrical or chemical energy. Extrinsic sensitization through photoluminescent spectral conversion has been proposed as a route to at least partially overcome this problem. Here, we discuss this approach in the emerging context of photochemical energy harvesting and storage through natural or artificial photosynthesis. Clearly contrary to application in photovoltaic energy conversion, implementation of solar spectral conversion for extrinsic sensitization of a photosynthetic machinery is very straightforward, and—when compared to intrinsic sensitization—less-strict limitations with regard to quantum coherence are seen. We now argue the ways in which extrinsic sensitization through photoluminescent spectral converters will—and will not—play its role in the area of ultra-efficient photosynthesis, and also illustrate how such extrinsic sensitization requires dedicated selection of specific conversion schemes and design strategies on system scale.

【 授权许可】

CC BY   
© 2015 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.