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Images of particles made from a promising battery cathode material called NMC

Junctionless Solar Cell for Enabling Third-Generation Photovoltaics

TomKat Center for Sustainable Energy

Krishna Saraswat, electrical engineering

This project will seek to increase efficiency and decrease manufacturing costs of solar photovoltaic panels by developing junctionless solar cells with transparent electrodes on commonly available semiconductor materials, such as silicon or germanium. The researchers will eliminate the need for doped positive/negative junctions by using conducting oxides which form a selective contact for either electrons or electron holes. Such cells could also be stacked on top of each other to enable greater than 50 percent efficiencies. The metal-insulator-semiconductor approach has already been demonstrated to obtain low resistance contacts for nanoscale transistors and photonic devices.