Solar Panel

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Across
  1. 1. what shortens a thin film's lifespan
  2. 6. what percentage of new electricity was solar
  3. 7. the source of solar energy
  4. 8. the biggest electricity unit
  5. 10. a semiconductor for PV
  6. 12. a type of cell in a solar panel
  7. 13. what does PV mean
  8. 14. are solar panels 100% efficient
  9. 16. how many times cheaper is the new solar panel compared to the commercial one
Down
  1. 2. what does TPV mean
  2. 3. prevents silicon from crystallizing
  3. 4. a key material in making solar panels
  4. 5. until what percentage does silicon metal have to get rid of impurities
  5. 9. how many years does a silicon solar panel last
  6. 11. a measuring unit for energy
  7. 15. an acronym for copper indium gallium selenide