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- Title
Optimal Energy Transfer in Light-Harvesting Systems.
- Authors
Lipeng Chen; Prathamesh Shenai; Fulu Zheng; Somoza, Alejandro; Yang Zhao
- Abstract
Photosynthesis is one of the most essential biological processes in which specialized pigment-protein complexes absorb solar photons, and with a remarkably high efficiency, guide the photo-induced excitation energy toward the reaction center to subsequently trigger its conversion to chemical energy. In this work, we review the principles of optimal energy transfer in various natural and artificial light harvesting systems. We begin by presenting the guiding principles for optimizing the energy transfer efficiency in systems connected to dissipative environments, with particular attention paid to the potential role of quantum coherence in light harvesting systems. We will comment briefly on photo-protective mechanisms in natural systems that ensure optimal functionality under varying ambient conditions. For completeness, we will also present an overview of the charge separation and electron transfer pathways in reaction centers. Finally, recent theoretical and experimental progress on excitation energy transfer, charge separation, and charge transport in artificial light harvesting systems is delineated, with organic solar cells taken as prime examples.
- Subjects
ENERGY transfer; SPECTRUM analysis; OPTICS; ENERGY density; ENERGY storage
- Publication
Molecules, 2015, Vol 20, Issue 8, p15224
- ISSN
1420-3049
- Publication type
Article
- DOI
10.3390/molecules200815224