Journal ArticleDOI
CdS quantum dots sensitized TiO2 nanotube-array photoelectrodes.
Reads0
Chats0
TLDR
Results clearly demonstrate that the unique nanotubes structure can facilitate the propagation and kinetic separation of photogenerated charges, suggesting potentially important applications of the inorganic QDs sensitized TiO2 nanotube-array films in solar cell applications.Abstract:
Novel CdS quantum dots (QDs) sensitized TiO2 nanotube-array photoelectrodes were investigated for their photoelectrochemical (PEC) performance. The highly ordered TiO2 nanotube arrays were synthesized by anodic oxidation and CdS QDs were deposited into the pores of the nanotube arrays by a sequential chemical bath deposition method. It is found that the CdS QDs deposited in the pores of the TiO2 nanotube arrays may significantly increase the liquid junction PEC short circuit photocurrent (from 0.22 to 7.82 mA/cm2) and cell efficiency (up to 4.15%). These results clearly demonstrate that the unique nanotube structure can facilitate the propagation and kinetic separation of photogenerated charges, suggesting potentially important applications of the inorganic QDs sensitized TiO2 nanotube-array films in solar cell applications.read more
Citations
More filters
Journal ArticleDOI
TiO2 nanotubes: synthesis and applications.
TL;DR: This review attempts to cover all aspects, including underlying principles and key functional features of TiO(2), in a comprehensive way and also indicates potential future directions of the field.
Journal ArticleDOI
Visible-light driven heterojunction photocatalysts for water splitting – a critical review
TL;DR: Li et al. as mentioned in this paper provided an overview of the concept of heterojunction construction and more importantly, the current state-of-the-art for the efficient, visible-light driven junction water splitting photo(electro)catalysts reported over the past ten years.
Journal ArticleDOI
ZnO Nanostructures for Dye-Sensitized Solar Cells
TL;DR: In this article, a review of recent developments in the use of ZnO nanostructures for dye-sensitized solar cell (DSC) applications is presented.
Journal ArticleDOI
Engineering heterogeneous semiconductors for solar water splitting
TL;DR: In this paper, a critical review highlights some key factors influencing the efficiency of heterogeneous semiconductors for solar water splitting (i.e. improved charge separation and transfer, promoted optical absorption, optimized band gap position, lowered cost and toxicity, and enhanced stability and water splitting kinetics).
Journal ArticleDOI
Semiconductor Composites: Strategies for Enhancing Charge Carrier Separation to Improve Photocatalytic Activity
TL;DR: The formation of semiconductor composites comprising multicomponent or multiphase heterojunctions is a very effective strategy to design highly active photocatalyst systems as discussed by the authors, and a review summarizes the recent strategies to develop such composites, and highlights the most recent developments in the literature.
References
More filters
Journal ArticleDOI
Environmental Applications of Semiconductor Photocatalysis
TL;DR: The slow pace of hazardous waste remediation at military installations around the world is causing a serious delay in conversion of many of these facilities to civilian uses as discussed by the authors, which is a serious problem.
Journal ArticleDOI
Photocatalysis on TiO2 Surfaces - Principles, Mechanisms, and Selected Results
TL;DR: In this article, the authors focus on interfacial processes and summarize some of the operating principles of heterogeneous photocatalysis systems, including the electron transfer and energy transfer processes in photocatalytic reactions.
Journal ArticleDOI
Light-induced amphiphilic surfaces
Rong Wang,Kazuhito Hashimoto,Akira Fujishima,Makota Chikuni,Eiichi Kojima,Atsushi Kitamura,Mitsuhide Shimohigoshi,Toshiya Watanabe +7 more
TL;DR: In this paper, the photogeneration of a highly amphiphilic (both hydrophilic and oleophilic) titanium dioxide surface was reported, and the unique character of this surface was ascribed to the microstructured composition of hydrophilicity of the phases, produced by ultraviolet irradiation.
Journal ArticleDOI
Use of highly-ordered TiO(2) nanotube arrays in dye-sensitized solar cells.
TL;DR: Voltage-decay measurements indicate that the highly ordered TiO(2) nanotube arrays, in comparison to nanoparticulate systems, have superior electron lifetimes and provide excellent pathways for electron percolation.
Journal ArticleDOI
Enhanced Charge-Collection Efficiencies and Light Scattering in Dye-Sensitized Solar Cells Using Oriented TiO2 Nanotubes Arrays
TL;DR: Analysis of photocurrent measurements indicates that the light-harvesting efficiencies of NT-based DSSCs were higher than those found for D SSCs incorporating NPs owing to stronger internal light-scattering effects.
Related Papers (5)
Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more