solar cells

Scientific Image - Silicon Nanomembrane

Air bubbles trapped beneath a silicon crystal film are shown in this optical microscope image. Light passing through the bubbles creates the circular patterns and colors.

Extremely thin films like these have important electrical properties and therefore find numerous applications in ultra-fast computer chips and high-yield solar cells. This image shows an intermediate stage of their production; trapped air bubbles are removed in later processing.

• SIZE: The sample imaged is 27 nm thick and a few cm wide.

• IMAGING TOOL: Optical Microscope

Dye Sensitized (Raspberry Juice) Solar Cell

Dye Sensitized (Raspberry Juice)Solar Cells is a hands-on activity adapted for classroom by UW MRSEC. This solar cell was invented by Michael Grätzel and Brian O'Regan at the École Polytechnique Fédérale de Lausanne in 1991. They are also known as Grätzel cells. In this activity students build a dye-sensitized solar cell using nanocrystalline titanium dioxide and raspberry juice. They then test the response of these solar cells to light (overhead projector or sun light). They also explore the effects of different 'dyes' on the performance of the solar cell.

Subscribe to RSS - solar cells