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Performance analysis of GeSn/SiGeSn quantum well infrared photodetector in terahertz wavelength region
S. Ghosh, , G. Sen, P.K. Basu
Published in Elsevier B.V.
Volume: 115
This work presents a theoretical analysis of a GeSn/SiGeSn Quantum Well Infrared Photodetector (QWIP). The absorption coefficient is obtained by inter subband transition of the carriers inside the well. Main analysis is concentrated on finding the quantum efficiency, responsivity of QWIP. The responsivity of the detector is studied as a function of capture probability, carrier lifetime and well number. The result shows that an acceptable responsivity is obtained in mid infrared terahertz region for a particular choice of material and well number. Finally the photo generated current is estimated and compared with previously reported data. © 2019
About the journal
JournalData powered by TypesetPhysica E: Low-Dimensional Systems and Nanostructures
PublisherData powered by TypesetElsevier B.V.