This special issue on solar energy and nanomaterials for clean energy development is comprised of selected, full-length versions of papers presented at the International Conference on Powering a Greener Future: Nanomaterials for solar energy conversion (solar'09). The highly successful solar conference series, started in 1991, provide a place where researchers interested in fundamental and applied aspects of photochemistry can meet and inspire one another. The solar conference recognizes that successful photochemical applications go hand in hand with advancement of fundamental understanding of photoinduced processes and excited states.

This conference was held in Luxor, Egypt, during the period 10–14 January 2009. It aimed to discuss in an interdisciplinary sense the newest trends, break-through, discoveries, as well as applications of nanomaterials in photochemistry, photocatalysis, solar energy conversion, and environmental aspects.

Topics of interest include but are not limited to:

• Nanomaterials for photovoltaics and 3rd-generation DSSCs, batteries, fuel cells, ceramics coating, solar energy conversion devices, polymers in water desalination and RO membrane production, OLED, photonics and photoluminescent materials
• Molecular/nano-photochemistry, photosciences and applications
• Environmental remediation: photocatalysis (air, soil, as well as water treatment and disinfection)
• Photosynthesis and artificial light-harvesting systems
• Photocatalytic hydrogen production and storage

Submission to this special issue is opened to participants of the International Conference on Powering a Greener Future: Nanomaterials for solar energy conversion (solar'09). Other contributions from interested scientists worldwide are also welcomed.

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