photochemist

/ˌfoʊtoʊˈkɛmɪst/
noun
  1. A scientist who studies the chemical effects of light or uses light to cause chemical reactions.
    • The university hired a photochemist to lead research on solar energy storage.
    • As a photochemist, she spends her days studying how light breaks down pollutants in the air.
    • The photochemist developed a new method for using sunlight to clean polluted water.