Spinach, not silicon, may be the basis of the next generation of opto-electronic devices, say Ida Lee, James Lee and Elias Greenbaum from Oak Ridge National Laboratory in the US. They have discovered a way of removing certain pigment-protein complexes known as "Photosystem I (PSI) reactor centres" from spinach membranes and bonding them instead to an electronic device. The PSI centres convert light into chemical energy.
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