Researchers at the University of Cambridge have discovered photovoltaic properties in an organic semiconductor molecule called P3TTM, which has an "open-shell" character due to unpaired electrons, allowing for efficient photon-to-charge conversion in solar cells. The new material enables the fabrication of solar cells from a single, low-cost, lightweight material, potentially increasing overall efficiency. The findings were published in the study "Intrinsic intermolecular photoinduced charge separation in organic radical semiconductors" in Nature Materials, highlighting a promising advancement in solar cell technology for climate solutions experts.