Very high sensitivity operation in quantum dot infrared photodetectors

Seung Woong Lee; Jung Ho Park; Shinichi Fujimoto; Kazuhiko Hirakawa

Very high sensitivity operation in quantum dot infrared photodetectors

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

Research output: Contribution to journal › Conference article › peer-review

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 language	English
Pages (from-to)	77-80
Number of pages	4
Journal	Institute of Physics Conference Series
Volume	184
Publication status	Published - 2005
Event	31st International Symposium of Compound Semiconductors 2004 - Seoul, Korea, Republic of Duration: 2004 Sept 12 → 2004 Dec 16

ASJC Scopus subject areas

General Physics and Astronomy

Cite this

@article{28701d5cf3ab4900bf92aba407058812,

title = "Very high sensitivity operation in quantum dot infrared photodetectors",

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.",

author = "Lee, {Seung Woong} and Park, {Jung Ho} and Shinichi Fujimoto and Kazuhiko Hirakawa",

year = "2005",

language = "English",

volume = "184",

pages = "77--80",

journal = "Institute of Physics Conference Series",

issn = "0951-3248",

publisher = "IOP Publishing Ltd.",

note = "31st International Symposium of Compound Semiconductors 2004 ; Conference date: 12-09-2004 Through 16-12-2004",

}

TY - JOUR

T1 - Very high sensitivity operation in quantum dot infrared photodetectors

AU - Lee, Seung Woong

AU - Park, Jung Ho

AU - Fujimoto, Shinichi

AU - Hirakawa, Kazuhiko

PY - 2005

Y1 - 2005

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=33644537920&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:33644537920

SN - 0951-3248

VL - 184

SP - 77

EP - 80

JO - Institute of Physics Conference Series

JF - Institute of Physics Conference Series

T2 - 31st International Symposium of Compound Semiconductors 2004

Y2 - 12 September 2004 through 16 December 2004

ER -

Very high sensitivity operation in quantum dot infrared photodetectors

Abstract

ASJC Scopus subject areas

Other files and links

Fingerprint

Cite this