Efficient hybrid solar cells from zinc oxide nanoparticles and a conjugated polymer

ZnO nanoparticles dispersed in a semiconducting polymer form the active layer of a solar cell (see Figure) that is able to convert up to 40% of the incident photons at 500 nm into electrical current and has a power conversion efficiency of about 1.5% in sunlight. Manufactured at low temperature using environmentally friendly materials, it represents a new step to 'green electricity'.