Minority electron unipolar photodetectors based on type II InAs/GaSb/AlSb superlattices for very long wavelength infrared detection

Nguyen, B.-M.; Bogdanov, S.; Pour, S. Abdollahi; Razeghi, M.
November 2009
Applied Physics Letters;11/2/2009, Vol. 95 Issue 18, p183502
Academic Journal
We present a hybrid photodetector design that inherits the advantages of traditional photoconductive and photovoltaic devices. The structure consists of a barrier layer blocking the transport of majority holes in a p-type semiconductor, resulting in an electrical transport due to minority carriers with low current density. By using the M-structure superlattice as a barrier region, the band alignments can be experimentally controlled, allowing for the efficient extraction of the photosignal with less than 50 mV bias. At 77 K, a 14 μm cutoff detector exhibits a dark current 3.3 mA/cm2, a photoresponsivity of 1.4 A/W, and the associated shot noise detectivity of 4×1010 Jones.


Related Articles

  • Mechanisms of infrared photoluminescence in HgTe/HgCdTe superlattice. Shao, Jun; Lu, Wei; Tsen, G. K. O.; Guo, Shaoling; Dell, J. M. // Journal of Applied Physics;Sep2012, Vol. 112 Issue 6, p063512 

    Temperature (11-250 K) and excitation power (5-480 mW) dependent infrared photoluminescence (PL) measurements are conducted on a HgTe/Hg0.05Cd0.95Te superlattice (SL) sample in a spectral range of 5-18 μm with adequate spectral resolution and signal-to-noise ratio. Three PL components are...

  • All-fibre dual-wavelength thulium-doped fibre laser based on spatial filtering effect. Azooz, S. M.; Hamida, B. A.; Khan, S.; Eltaif, T.; Jasim, A. A.; Ahmad, H.; Harun, S. W. // Ukrainian Journal of Physical Optics;2014, Vol. 15 Issue 2, p79 

    We report a room-temperature all-fibre dual-wavelength thulium-doped fibre laser that operates around 1900 nm and uses a spatial mode-beating filter in a ring configuration. By pumping the gain medium with an 800 nm laser and controlling the phase mismatch at the splicing points of a...

  • EXFO Launches First Pol-Mux Optical Spectrum Analyzer for Coherent 40G/100G DWDM Systems.  // Fiber Optics Weekly Update;1/31/2014, Vol. 34 Issue 5, p7 

    The article reports that EXFO Inc., manufacturer of fiber-optic test announced the launch of Pol-Mux 40G/100G optical signal-to-noise ratio (OSNR) testing capabilities called WDM-Aware Pol-Mux and FTB/IQS-5240BP Optical Spectrum Analyzers (OSAs). It offers information on the launch of...

  • Research on D-band (118.75 GHz) Short-range Detection Characteristics. Hong Wang; Xing-guo Li; Jian-fei Chen; Jianqiao Wang // International Journal of Advancements in Computing Technology;Feb2013, Vol. 5 Issue 4, p101 

    In the 118.75GHz wave propagation process, attenuation is mainly due to the absorption of oxygen. It's also caused by absorption and scattering by hydrometeors. This paper focuses on the influence of rain on 118.75GHz radar short-range detection characteristics. Based on the research of...

  • MAXI observations of gamma-ray bursts. Motoko SERINO; Takanori SAKAMOTO; Nobuyuki KAWAI; Atsumasa YOSHIDA; Masanori OHNO; Yuji OGAWA; Yasunori NISHIMURA; Kosuke FUKUSHIMA; Masaya HIGA; Kazuto ISHIKAWA; Masaki ISHIKAWA; Taiki KAWAMURO; Masashi KIMURA; Masaru MATSUOKA; Tatehiro MIHARA; Mikio MORII; NAKAGAWA, Yujin E.; Satoshi NAKAHIRA; Motoki NAKAJIMA; Yuki NAKANO // Publications of the Astronomical Society of Japan;Oct2014, Vol. 66 Issue 5, p1 

    The Monitor of All-sky X-ray Image (MAXI) Gas Slit Camera (GSC) detects gamma-ray bursts (GRBs), including bursts with soft spectra, such as X-ray flashes (XRFs).MAXI/GSC is sensitive to the energy range from 2 to 30 keV. This energy range is lower than other currently operating instruments...

  • High speed scanning of terahertz pulse by a rotary optical delay line. Kim, Geun-Ju; Jeon, Seok-Gy; Kim, Jung-Il; Jin, Yun-Sik // Review of Scientific Instruments;Oct2008, Vol. 79 Issue 10, p106102 

    We demonstrate high speed scanning of a time-domain terahertz pulse by a rotary optical delay line (RODL) incorporated into a photoconductive antenna based terahertz system. The delay line of RODL consists of six rotating convex reflective blades with a rotating speed controlled for a wide range...

  • Figurate superlattices in the classical problem of signal filtering against the noise background on the basis of a cellular nonlinear network. Malyshev, K.; Potapov, A.; Chernyshov, S. // Journal of Communications Technology & Electronics;Apr2013, Vol. 58 Issue 4, p325 

    A new type of multilayer semiconductor structures (figurate superlattices) that can be used in construction of resonant-tunneling diode components has been proposed and investigated. The superlattice advantages over structures with standard nonlinear current-voltage characteristics are discussed...

  • Phase locking of a 3.4 THz third-order distributed feedback quantum cascade laser using a room-temperature superlattice harmonic mixer. Hayton, D. J.; Khudchencko, A.; Pavelyev, D. G.; Hovenier, J. N.; Baryshev, A.; Gao, J. R.; Kao, T. Y.; Hu, Q.; Reno, J. L.; Vaks, V. // Applied Physics Letters;7/29/2013, Vol. 103 Issue 5, p051115 

    We report on the phase locking of a 3.4 THz third-order distributed feedback quantum cascade laser (QCL) using a room temperature GaAs/AlAs superlattice diode as both a frequency multiplier and an internal harmonic mixer. A signal-to-noise level of 60 dB is observed in the intermediate frequency...

  • The parameters of pulsar subpulse emission at decameter wavelengths. Ul'yanov, O. M.; Zakharenko, V. V.; Bruk, Yu. M. // Astronomy Reports;Nov2008, Vol. 52 Issue 11, p917 

    An original method for determining the main parameters of the radio emission of pulsar subpulses at decameter wavelengths is proposed. The method involves the combined use of spectral and correlation analyses for the recorded signals. The novelty of the method is connected with two conditions...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics