Method for manufacturing CuInSe2-based thin-film solar cell

摘要

PURPOSE:To increase pass rate by finding out a proper method for evaluating a CuInSe2 thin film in the middle of the process, since a thin-film solar battery which is manufactured using the CuInSe thin film formed under the same conditions as an active layer has fluctuation in characteristics. CONSTITUTION:The photoluminescence which is emitted when the laser light is cast on a CuInSe2 thin film is measured and it is evaluated by its luminous strength. To be more specific, good products are obtained if such a lot is used as may contain a test piece having the photoluminescence spectrum whose maximum luminous intensity in the 0.8-0.9eV region is equal to a specified value or above or such a lot is used as may contain a test piece having the photoluminescence spectrum whose maximum luminous intensity in the 0.8-0.9eV region is more than twice that in the 0.9-1.0eV region, when the test piece is cooled down to the liquid nitrogen temperature. When the test piece is cooled to the liquid herium temperature, such a lot is used as may contain a test piece having the photoluminescence spectrum whose maximum luminous intensity in the 0.8-0.9eV region is equal to the specified value or above.