The vital need for massively scalable carbon-free energy sources has forced to focus the attention on energy production as well as storage devices with improved efficiency and reduced cost. Innovative nanotechnology which manipulates the mater at the nanoscale with unprecedented accuracy will be the key to secure the clean and sustainable energy future. In recent years, application of nanotechnology in energy sector has opened up the possibility of new alternatives that are more efficient, cost-effective, and environment friendly. Thus, the development of sustainable energy production schemes using nanotechnology is one of the most major scientific challenges.

From the viewpoints of the above facts, this special issue will mainly focus on the recent progress and perceptive of nanostructure semiconductors for energy production and storage. In this issue, the contributions of nanotechnology in energy production such as DSSC, photoelectrochemical devices, nanomaterial-based water splitting, nanostructured electrodes for fuel cells as well as battery and supercapacitors will be covered. Potential topics include, but are not limited to:

• Nanomaterials in photovoltaics
• Photoelectrochemical cells
• Hydrogen production/solar fuels using nanomaterials
• Fuel cells
• Supercapacitors
• Carbon-based nanomaterials for energy storage
• Batteries
• Nanomaterials for hydrogen storage
• Biomimetic energy producing systems from nature

Before submission authors should carefully read over the journal's Author Guidelines, which are located at http://www.hindawi.com/journals/jnt/guidelines/. Prospective authors should submit an electronic copy of their complete manuscript through the journal Manuscript Tracking System at http://mts.hindawi.com/ according to the following timetable: