Assessing the Epitaxy Structure of Quantum Well Infrared Photodetector by Photoluminescence Measurement

The photoluminescence(PL)scan has been performed on the material of GaAs/AlGaAs multiple quantum well infrared photodetector(QWIP).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.