In this paper, several samples of GaAs/AlGaAs multiple quantum well material with different parameters are present, the
measurement result using photoluminescence(PL) spectroscopy shows the energy between the ground state in valence
band and the ground state in conduction band of the well for each sample. Through transfer matrix method (TTM), we
obtain bound state eigenvalues, and the corresponding eigenfunctions of arbitrarily graded in one-dimensional potential
wells. With theoretical calculation, the peak response wavelength of the QWIP is determined. The calculated result is
coincident with the one from photocurrent spectrum for the same sample very well. The comparison of theory and
experiment confirms that PL scan is an important testing method for the quality of material.
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