Photovoltaic cells and DSSCs questions
1. (a) Explain why metals are good conductors of electricity whereas non-metals (other than graphite) are poor conductors of electricity. (b) Explain how adding small amounts of gallium and arsenic to silicon improves the efficiency of the photoelectric effect. 2. The table below shows the wavelength of maximum absorbance for three named compounds together with their molecular formulas. *The full structural formula...