Journal
IEEE JOURNAL OF QUANTUM ELECTRONICS
Volume 37, Issue 11, Pages 1412-1419Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/3.958360
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The growth, fabrication, and characterization of a normal-incidence, high-temperature, mid-wavelength infrared, InAs-GaAs vertical quantum-dot infrared photodetector with a single Al0.3Ga0.7As current-blocking barrier are described and discussed in detail. A specific detectivity approximate to3 x 10(9) cmHz(1/2)/W is measured for a detector temperature of 100 K at a bias of 0.2 V. Detector characteristics are measured for temperatures as high as 150 K. The superior low bias performance of the vertical quantum-dot infrared photodetector ensures its compatibility with commercially available silicon read-out circuits necessary for the fabrication of a focal plane array.
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