scholarly journals Ultrafast Dynamics of Charge Transfer and Photochemical Reactions in Solar Energy Conversion

2018 ◽  
Vol 5 (12) ◽  
pp. 1800221 ◽  
Author(s):  
Jing-Yin Xu ◽  
Xin Tong ◽  
Peng Yu ◽  
Gideon Evans Wenya ◽  
Thomas McGrath ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
Photochemical Reactions ◽  
Ultrafast Dynamics

Photoinduced Charge Transfer and Efficient Solar Energy Conversion in a Blend of a Red Polyfluorene Copolymer with CdSe Nanoparticles

Nano Letters ◽  
2006 ◽  
Vol 6 (8) ◽  
pp. 1789-1793 ◽  
Author(s):  
Peng Wang ◽  
Agnese Abrusci ◽  
Henry M. P. Wong ◽  
Mattias Svensson ◽  
Mats R. Andersson ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
Cdse Nanoparticles ◽  
Photoinduced Charge Transfer ◽  
Photoinduced Charge

Novel porphyrin-preparation, characterization, and applications in solar energy conversion

2016 ◽  
Vol 18 (9) ◽  
pp. 6885-6892 ◽  
Author(s):  
Jianfeng Lu ◽  
Hao Li ◽  
Shuangshuang Liu ◽  
Yu-Cheng Chang ◽  
Hui-Ping Wu ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Conversion Efficiency ◽  
Light Harvesting ◽  
Solar Energy Conversion

Accelerated inner charge transfer in porphyrins promotes a broad light-harvesting ability up to 840 nm and a conversion efficiency of 9.2%.

Double heterojunction nanowire photocatalysts for hydrogen generation

Nanoscale ◽  
2014 ◽  
Vol 6 (8) ◽  
pp. 4117-4124 ◽  
Author(s):  
P. Tongying ◽  
F. Vietmeyer ◽  
D. Aleksiuk ◽  
G. J. Ferraudi ◽  
G. Krylova ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Charge Separation ◽  
Hydrogen Generation ◽  
Solar Energy Conversion ◽  
Double Heterojunction ◽  
Key Aspects

Charge separation and charge transfer across interfaces are key aspects in the design of efficient photocatalysts for solar energy conversion.

Ultrafast Dynamics in Multifunctional Ru(II)-Loaded Polymers for Solar Energy Conversion

2015 ◽  
Vol 48 (3) ◽  
pp. 818-827 ◽  
Author(s):  
Zachary A. Morseth ◽  
Li Wang ◽  
Egle Puodziukynaite ◽  
Gyu Leem ◽  
Alexander T. Gilligan ◽  
...  
Keyword(s):  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
Ultrafast Dynamics

scholarly journals Watching the dynamics of electrons and atoms at work in solar energy conversion

2015 ◽  
Vol 185 ◽  
pp. 51-68 ◽  
Author(s):  
S. E. Canton ◽  
X. Zhang ◽  
Y. Liu ◽  
J. Zhang ◽  
M. Pápai ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
Photochemical Reactions ◽  
Atomic Scale ◽  
Intramolecular Electron Transfer ◽  
X Ray ◽  
Ultrafast Optical ◽  
Quantum Chemistry Calculations

The photochemical reactions performed by transition metal complexes have been proposed as viable routes towards solar energy conversion and storage into other forms that can be conveniently used in our everyday applications. In order to develop efficient materials, it is necessary to identify, characterize and optimize the elementary steps of the entire process on the atomic scale. To this end, we have studied the photoinduced electronic and structural dynamics in two heterobimetallic ruthenium–cobalt dyads, which belong to the large family of donor–bridge–acceptor systems. Using a combination of ultrafast optical and X-ray absorption spectroscopies, we can clock the light-driven electron transfer processes with element and spin sensitivity. In addition, the changes in local structure around the two metal centers are monitored. These experiments show that the nature of the connecting bridge is decisive for controlling the forward and the backward electron transfer rates, a result supported by quantum chemistry calculations. More generally, this work illustrates how ultrafast optical and X-ray techniques can disentangle the influence of spin, electronic and nuclear factors on the intramolecular electron transfer process. Finally, some implications for further improving the design of bridged sensitizer-catalysts utilizing the presented methodology are outlined.

scholarly journals Photophysics and Photochemistry of Iron Carbene Complexes for Solar Energy Conversion and Photocatalysis

Catalysts ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 315 ◽  
Author(s):  
Linnea Lindh ◽  
Pavel Chábera ◽  
Nils W. Rosemann ◽  
Jens Uhlig ◽  
Kenneth Wärnmark ◽  
...  
Keyword(s):  
Excited State ◽  
Charge Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Excited States ◽  
Coordination Compounds ◽  
Solar Energy Conversion ◽  
Carbene Complexes ◽  
Photochemical Properties ◽  
Iron Carbenes

Earth-abundant first row transition metal complexes are important for the development of large-scale photocatalytic and solar energy conversion applications. Coordination compounds based on iron are especially interesting, as iron is the most common transition metal element in the Earth’s crust. Unfortunately, iron-polypyridyl and related traditional iron-based complexes generally suffer from poor excited state properties, including short excited-state lifetimes, that make them unsuitable for most light-driven applications. Iron carbene complexes have emerged in the last decade as a new class of coordination compounds with significantly improved photophysical and photochemical properties, that make them attractive candidates for a range of light-driven applications. Specific aspects of the photophysics and photochemistry of these iron carbenes discussed here include long-lived excited state lifetimes of charge transfer excited states, capabilities to act as photosensitizers in solar energy conversion applications like dye-sensitized solar cells, as well as recent demonstrations of promising progress towards driving photoredox and photocatalytic processes. Complementary advances towards photofunctional systems with both Fe(II) complexes featuring metal-to-ligand charge transfer excited states, and Fe(III) complexes displaying ligand-to-metal charge transfer excited states are discussed. Finally, we outline emerging opportunities to utilize the improved photochemical properties of iron carbenes and related complexes for photovoltaic, photoelectrochemical and photocatalytic applications.

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