Jia-Ping SU, Xiao-Hao ZHOU, Zhou TANG, Liu-Yan FAN, Shun-Ji XIA, Ping-Ping CHEN, Ze-Zhong CHEN. Study on material characterization and device performance of non-uniform GaAs/AlGaAs quantum well infrared detectors[J]. Journal of Infrared and Millimeter Waves, 2024, 43(1): 7
- Journal of Infrared and Millimeter Waves
- Vol. 43, Issue 1, 7 (2024)
Fig. 1. The distributions of doping concentration and barrier width of each quantum wells for the NUQWIP
Fig. 2. The measured high resolution transmission electron microscope（HRTEM）of sample A.
Fig. 3. Energy Spectrometer image of sample A.
Fig. 4. The test results of SIMS for sample A
Fig. 5. The dependence of dark current on bias voltage at different temperatures，the solid line is NUQWIP，and the dotted line is a conventional QWIP
Fig. 6. Photocurrent response spectra of NUQWIP and Conventional QWIP at 50K.
Fig. 7. Relationship between blackbody responsiveness and bias voltage in Non-uniform QWIP and Conventional QWIP at different temperatures.
Fig. 8. Photocurrent response spectra of samples A，B，and C at 50K
Fig. 9. The dependence of dark current on bias voltage of sample A，sample B and sample C at different temperatures.
Fig. 10. Relationship between blackbody responsiveness and bias voltage for samples A，B，and C at different temperatures.
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Table 1. Molecular beam epitaxy growth parameters of samples with different structures
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Table 2. Molecular Beam Epitaxy structure of Non-uniform Quantum Well materials
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