TITLE

Multispectral long-wavelength quantum-well infrared photodetectors

AUTHOR(S)
Mitra, P.; Case, F. C.; McCurdy, J. H.; Zaidel, S. A.; Claiborne, L. T.
PUB. DATE
May 2003
SOURCE
Applied Physics Letters;5/12/2003, Vol. 82 Issue 19, p3185
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Multispectral detector arrays for application in the 8-11 μm spectral band have been fabricated from GaAs/AlGaAs multiple quantum-well (MQW) materials. For efficient narrow-band coupling of the infrared radiation, three-dimensional diffractive resonant optical cavities are patterned into the MQW material. The peak wavelengths of the multispectral quantum-well infrared photodetectors are tuned by controlling the dimensions of the resonant structure. The full width at half maximum of the spectral response is as narrow as 0.7 μm. As many as 24 different detector designs were implemented on a single array. The spectrally tuned detectors exhibit peak responsivities as high as 2.6 A/W and quantum efficiency as high as 57%. Total conversion efficiency is as high as 35%. The background limited peak detectivity measured at 9.0 μm and 55 K with a 295 K background and f/2.5 is ⩾ 1 × 10[SUP11] cm Hz[SUP0.5]/W.
ACCESSION #
9697759

 

Related Articles

  • Infrared image analysis and elaboration for archaeology: The case study of a medieval ' capsella' from Cimitile, Italy. Bloisi, F.; Ebanista, C.; Falcone, L.; Vicari, L. // Applied Physics B: Lasers & Optics;Oct2010, Vol. 101 Issue 1/2, p471 

    Infrared reflectography, i.e. the use of images taken with infrared light, is currently applied in the field of cultural heritage mainly for paintings analysis to reveal the presence of underdrawings or alterations. Its use in archaeology for deciphering faded signs (texts, images, tattoos,...

  • Measurements of InGaAs metal–semiconductor–metal photodetectors under high-illumination conditions. Aliberti, K.; Wraback, M.; Stead, M.; Newman, P.; Shen, H. // Applied Physics Letters;4/22/2002, Vol. 80 Issue 16, p2848 

    We report on temporal response measurements of InGaAs metal–semiconductor–metal photodetectors (MSM–PDs) under high-illumination conditions. The peak current efficiency of the MSM–PDs decreases as optical pulse energy increases due to space-charge-screening effects....

  • Plasmonic thermal IR emitters based on nanoamorphous carbon. Tay, Savaş; Kropachev, Aleksandr; Araci, Ismail Emre; Skotheim, Terje; Norwood, Robert A.; Peyghambarian, N. // Applied Physics Letters;2/16/2009, Vol. 94 Issue 7, pN.PAG 

    The development of plasmonic narrow-band thermal mid-IR emitters made from a conducting amorphous carbon composite is shown. These IR emitters have greatly improved thermal and mechanical stability compared to metallic emitters as they can be operated at 600 °C in air without any degradation...

  • A new “invisible” IR phosphor based on yttrium and ytterbium phosphates. Manashirov, O. YA.; Georgobiani, A. N.; Gutan, V. B.; Semendyaev, S. V. // Inorganic Materials;Aug2010, Vol. 46 Issue 8, p889 

    We describe a series of efficient “invisible” IR phosphors based on ytterbium and yttrium phosphates, differing in spectral sensitivity in the ranges 0.8–0.84 and 1.5–1.6 μm. These phosphors are of considerable practical interest and can be used in photoconversion...

  • Low noise p-pi-n GaN ultraviolet photodetectors. Osinsky, A.; Gangopadhyay, S. // Applied Physics Letters;10/20/1997, Vol. 71 Issue 16, p2334 

    Examines the fabrication and characterization of p-pi-n gallium nitride ultraviolet detectors. Measurement of the spectral response of photodiodes; Analysis on the strong peaking of spectral response with front illumination; Identification of the noise characteristics of photodiodes.

  • Modeling of the spectral response of Al...Ga...N Schottky ultraviolet photodetectors. Bouhdada, A.; Hanzaz, M. // Journal of Applied Physics;6/15/2000, Vol. 87 Issue 12, p8286 

    Presents information on a study which modeled spectral responses of aluminum-gallium nitride Schottky photodiodes. Materials used; Impact of doping density on the spectral response; Effectiveness in ultraviolet detection; Conclusion.

  • Heterojunction wavelength-tailorable far-infrared photodetectors with response out to 70 μm. Perera, A. G. U.; Matsik, S. G.; Yaldiz, B.; Liu, H. C.; Shen, A.; Gao, M.; Wasilewski, Z. R.; Buchanan, M. // Applied Physics Letters;4/9/2001, Vol. 78 Issue 15, p2241 

    Results are presented on the performance of a heterojunction interfacial workfunction internal photoemission (HEIWIP) wavelength-tailorable detector. The detection mechanism is based on free-carrier absorption in the heavily doped emitter regions and internal emission across a workfunction...

  • Two-dimensional micromechanical bimorph arrays for detection of thermal radiation. Manalis, S.R.; Minne, S.C. // Applied Physics Letters;6/16/1997, Vol. 70 Issue 24, p3311 

    Examines the use of two-dimensional micromechanical bimorph arrays to detect thermal radiation. Translation of the infrared heating source to demonstrate the spiral array imaging; Functions of the thermal sensors in a wide range of chemical environments; Deposition of the Fresnel zone plates on...

  • Effects of absorption layer characteristic on spectral photoresponse of mid-wavelength InSb photodiodes. Hu, W.; Chen, X.; Ye, Z.; Meng, C.; Lv, Y.; Lu, W. // Optical & Quantum Electronics;Oct2011, Vol. 42 Issue 11-13, p801 

    We report on two dimensional numerical simulations of photoresponse characteristic for mid-wavelength InSb infrared photodiodes. Effects of thickness of absorption layer on the photoresponse have been investigated for both front-side and back-side illuminated devices. Optimal thickness of...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

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

Try another library?
Sign out of this library

Other Topics