Title :
Mid-infrared quantum dot barrier photodetectors with extended cutoff wavelengths
Author :
Hill, C.J. ; Soibel, A. ; Keo, S.A. ; Mumolo, J.M. ; Ting, D.Z. ; Gunapala, S.D.
Author_Institution :
Jet Propulsion Lab., California Inst. of Technol., Pasadena, CA, USA
fDate :
9/1/2010 12:00:00 AM
Abstract :
A method to extend the cutoff wavelength of mid-infrared barrier photodetectors by incorporating self-assembled InSb quantum dots into the active area of the detector is demonstrated. This approach enables the extension of the cutoff wavelength of barrier photodetectors from 4.2 to 6 m, demonstrating infrared response at temperatures up to 225 K.
Keywords :
antimony compounds; indium compounds; photodetectors; quantum dots; extended cutoff wavelengths; infrared response; mid-infrared quantum dot barrier photodetectors; size 4.2 mum to 6 mum;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2010.1844
