Excited light above aforementioned forbidden band energy width or excited light below forbidden band

摘要

PROBLEM TO BE SOLVED: To provide a method for measuring a level in a forbidden band by two-wavelength excitation photo-luminescence capable of simply and accurately determining a non-radiative recombination parameter.;SOLUTION: This device for measuring the level in the forbidden band by two-wavelength excitation photo-luminescence is provided with a means for performing pulse irradiation with exciting light equal to a forbidden-band energy width or more or exciting light equal to the forbidden band energy width or less, a means for obtaining the time constant of time-resolved response based on the pule irradiation, and a means for measuring the parameter for determining the level of non-radiative recombination on the basis of the time constant.;COPYRIGHT: (C)2002,JPO