Very high sensitivity operation in quantum dot infrared photodetectors

Seung Woong Lee, Jung ho Park, Shinichi Fujimoto, Kazuhiko Hirakawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We report on photocurrent spectra of Be-doped p-type modulation-doped quantum dot infrared photodetector structure. We have observed a broad photocurrent signal in a photon energy range of 100-400 meV (wavelength range of 3-10 μm) due to bound-to-continuum intersubband absorption of normal incidence radiation in the valence band of InAs self-assembled quantum dots, showing a peak sensitivity around hv= 190 meV. Furthermore, the observed responsivity was as high as 16 A/W at T = 10 K, which is to our knowledge, the highest value ever reported for quantum dot infrared photodetectors.

Original languageEnglish
Title of host publicationInstitute of Physics Conference Series
EditorsJ.-C. Woo, H. Hasegawa, Y.-S. Kwon, T. Yao, K.-H. Yoo
Pages77-80
Number of pages4
Volume184
Publication statusPublished - 2005
Event31st International Symposium of Compound Semiconductors 2004 - Seoul, Korea, Republic of
Duration: 2004 Sep 122004 Dec 16

Other

Other31st International Symposium of Compound Semiconductors 2004
CountryKorea, Republic of
CitySeoul
Period04/9/1204/12/16

Fingerprint

photometers
quantum dots
photocurrents
sensitivity
incidence
continuums
valence
modulation
photons
radiation
wavelengths
energy

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Lee, S. W., Park, J. H., Fujimoto, S., & Hirakawa, K. (2005). Very high sensitivity operation in quantum dot infrared photodetectors. In J-C. Woo, H. Hasegawa, Y-S. Kwon, T. Yao, & K-H. Yoo (Eds.), Institute of Physics Conference Series (Vol. 184, pp. 77-80)

Very high sensitivity operation in quantum dot infrared photodetectors. / Lee, Seung Woong; Park, Jung ho; Fujimoto, Shinichi; Hirakawa, Kazuhiko.

Institute of Physics Conference Series. ed. / J.-C. Woo; H. Hasegawa; Y.-S. Kwon; T. Yao; K.-H. Yoo. Vol. 184 2005. p. 77-80.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Lee, SW, Park, JH, Fujimoto, S & Hirakawa, K 2005, Very high sensitivity operation in quantum dot infrared photodetectors. in J-C Woo, H Hasegawa, Y-S Kwon, T Yao & K-H Yoo (eds), Institute of Physics Conference Series. vol. 184, pp. 77-80, 31st International Symposium of Compound Semiconductors 2004, Seoul, Korea, Republic of, 04/9/12.
Lee SW, Park JH, Fujimoto S, Hirakawa K. Very high sensitivity operation in quantum dot infrared photodetectors. In Woo J-C, Hasegawa H, Kwon Y-S, Yao T, Yoo K-H, editors, Institute of Physics Conference Series. Vol. 184. 2005. p. 77-80
Lee, Seung Woong ; Park, Jung ho ; Fujimoto, Shinichi ; Hirakawa, Kazuhiko. / Very high sensitivity operation in quantum dot infrared photodetectors. Institute of Physics Conference Series. editor / J.-C. Woo ; H. Hasegawa ; Y.-S. Kwon ; T. Yao ; K.-H. Yoo. Vol. 184 2005. pp. 77-80
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