solar conversion efficiency

The ratio of the Gibbs energy gain per unit time per $m 2$ of surface exposed to the sun and the solar irradiance, $E$ , integrated between $λ = 0$ and $λ = ∞$ .

See also: photoelectrolytic cell

Source:

PAC, 1996, 68, 2223 (Glossary of terms used in photochemistry (IUPAC Recommendations 1996)) on page 2274