Ultrafast interfacial electron transfer in dye-sensitized ZnO nanocrystalline films: comparison with other metal oxides (Invited Paper)

2005 ◽  
Author(s):  
Akihiro Furube ◽  
Ryuzi Katoh ◽  
Kohjiro Hara ◽  
Masanori Tachiya
Keyword(s):  
Electron Transfer ◽  
Metal Oxides ◽  
Interfacial Electron Transfer ◽  
Nanocrystalline Films ◽  
Dye Sensitized

Improving interfacial electron transfer and light harvesting in dye-sensitized solar cells by using Ag nanowire/TiO2 nanoparticle composite films

RSC Advances ◽  
2015 ◽  
Vol 5 (86) ◽  
pp. 70172-70177 ◽  
Author(s):  
Po-Chun Huang ◽  
Tsan-Yao Chen ◽  
Yi-Lin Wang ◽  
Chiun-Yi Wu ◽  
Tsang-Lang Lin
Keyword(s):  
Electron Transfer ◽  
Solar Cells ◽  
Surface Plasmon Resonance ◽  
Composite Films ◽  
Dye Sensitized Solar Cells ◽  
Interfacial Electron Transfer ◽  
Dye Sensitized ◽  
Ag Nanowires ◽  
Sensitized Solar Cells ◽  
Ag Nanowire

TiO2 coated Ag nanowires improved the interfacial electron transfer, the surface plasmon resonance, and the light-scattering in dye-sensitized solar cells.

Interfacial electron transfer yields in dye-sensitized NiO photocathodes correlated to excited-state dipole orientation of ruthenium chromophores

2018 ◽  
Vol 96 (9) ◽  
pp. 865-874 ◽  
Author(s):  
Yejee Han ◽  
Robert J. Dillon ◽  
Cory J. Flynn ◽  
Eric S. Rountree ◽  
Leila Alibabaei ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Excited State ◽  
Transient Absorption ◽  
Photovoltaic Performance ◽  
Interfacial Electron Transfer ◽  
Dipole Orientation ◽  
Ruthenium Polypyridyl ◽  
Dye Sensitized ◽  
Surface Enhanced ◽  
Device Efficiency

Interface dynamics of nanocrystalline NiO thin films sensitized with two ruthenium polypyridyl chromophores have been investigated to examine the influence that excited-state dipole orientation and the position of the bipyridine radical formed in the charge-separated state have on interfacial electron transfer yields. In ultrafast transient absorption experiments, the charge separated state is observed on the nanosecond timescale for the trifluoromethyl-substituted chromophore, [Ru(flpy)2(dcb)]2+ (flpy = 4,4′-bis(trifluoromethyl)-2,2′-bipyridine, dcb = 4,4′-dicarboxy-2,2′-bipyridine), but not for [Ru(bpy)2(dcb)]2+ (bpy = 2,2′-bipyridine). Differences are attributed to the positioning of the bipyridine radical formed in the charge separated state; for [Ru(flpy)2(dcb)]2+, the electron is localized on the flpy ligand distal to the surface, whereas for [Ru(bpy)2(dcb)]2+, the electron is localized on the dcb ligand, proximal to the NiO surface. Enhanced photovoltaic performance is observed for dye-sensitized solar cell devices prepared with [Ru(flpy)2(dcb)]2+, demonstrating that enhanced charge separation can be correlated with device efficiency.

Interfacial electron transfer promotes photo-catalytic reduction of 4-nitrophenol by Au/Ag2O nanoparticles confined in dendritic mesoporous silica nanospheres

2019 ◽  
Vol 9 (20) ◽  
pp. 5786-5792 ◽  
Author(s):  
Tai-Qun Yang ◽  
Tian-Yu Ning ◽  
Bo Peng ◽  
Bing-Qian Shan ◽  
Yu-Xin Zong ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Mesoporous Silica ◽  
Metal Oxides ◽  
Heterogeneous Catalysts ◽  
Catalytic Reduction ◽  
Interfacial Electron Transfer ◽  
Silica Nanospheres ◽  
Ag2o Nanoparticles ◽  
Mesoporous Silica Nanospheres

Manipulating the electron transfer in composite metals or/and metal oxides on the nanoscale is crucial for the development of improved heterogeneous catalysts.

ALD Grown Aluminum Oxide Submonolayers in Dye-Sensitized Solar Cells: The Effect on Interfacial Electron Transfer and Performance

2011 ◽  
Vol 115 (33) ◽  
pp. 16720-16729 ◽  
Author(s):  
Liisa J. Antila ◽  
Mikko J. Heikkilä ◽  
Ville Mäkinen ◽  
Niko Humalamäki ◽  
Mikko Laitinen ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Solar Cells ◽  
Aluminum Oxide ◽  
Dye Sensitized Solar Cells ◽  
Interfacial Electron Transfer ◽  
Dye Sensitized ◽  
And Performance ◽  
Sensitized Solar Cells

scholarly journals Interfacial Electron Transfer in Dye-Sensitized TiO2 Devices for Solar Energy Conversion

2021 ◽  
Author(s):  
Andressa Müller ◽  
Wendel Wierzba ◽  
Mariana Pastorelli ◽  
André Polo
Keyword(s):  
Electron Transfer ◽  
Solar Energy ◽  
Energy Conversion ◽  
Solar Energy Conversion ◽  
Transport Processes ◽  
Transfer Reactions ◽  
Molecular Devices ◽  
Interfacial Electron Transfer ◽  
Electron Transfer Reactions ◽  
Dye Sensitized

The development of cost-effective molecular devices that efficiently capture and convert sunlight into other useful forms of energy is a promising approach to meet the world’s increasing energy demands. These devices are designed through a successful combination of materials and molecules that work synergistically to promote light-driven chemical reactions. Light absorption by a surface-bound chromophore triggers a sequence of interfacial electron transfer processes. The efficiencies of the devices are governed by the dynamic balance between the electron transfer reactions that promote energy conversion and undesirable side reactions. Therefore, it is necessary to understand and control these processes to optimize the design of the components of the devices and to achieve higher energy conversion efficiencies. In this context, this review discusses general aspects of interfacial electron transfer reactions in dye-sensitized TiO2 molecular devices for solar energy conversion. A theoretical background on the Marcus-Gerischer theory for interfacial electron transfer and theoretical models for electron transport within TiO2 films are provided. An overview of dye-sensitized solar cells (DSSCs) and dye-sensitized photoelectrosynthesis cells (DSPECs) is presented, and the electron transfer and transport processes that occur in both classes of devices are emphasized and detailed. Finally, the main spectroscopic, electrochemical and photoelectrochemical experimental techniques that are employed to elucidate the kinetics of the electron transfer reactions discussed in this review are presented.

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