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Applied Physics Letters / Volume 95 / Issue 23 / LASERS, OPTICS, AND OPTOELECTRONICS

Appl. Phys. Lett. 95, 231113 (2009); http://dx.doi.org/10.1063/1.3271526 (3 pages)

Room temperature photocurrent response of PbS/InP heterojunction

Zhijun Liu, Jin Ho Kim, Gustavo E. Fernandes, and Jimmy Xu

Division of Engineering, Brown University, Providence, Rhode Island 02912, USA

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(Received 27 October 2009; accepted 13 November 2009; published online 11 December 2009)

We report on the observation of photocurrent response of a PbS/InP heterojunction. The PbS/InP heterostructure is synthesized via aqueous solution-based heteroepitaxial growth, and is fabricated into a photodetector. At zero bias, two photoresponse bands between 0.75 and 3.1 μm are measured at room temperature, which correspond to interband photocarrier generations in PbS and InP, respectively. An anomalous polarity of the photocurrent is observed and its possible origins are analyzed.

© 2009 American Institute of Physics

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KEYWORDS and PACS

Keywords

epitaxial growth, III-V semiconductors, indium compounds, IV-VI semiconductors, lead compounds, photoconductivity, photodetectors, semiconductor growth, semiconductor heterojunctions

PACS

  • 73.40.Lq

    Other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions

  • 81.05.Ea

    III-V semiconductors

  • 72.40.+w

    Photoconduction and photovoltaic effects

  • 85.60.Gz

    Photodetectors (including infrared and CCD detectors)

  • 72.20.Jv

    Charge carriers: generation, recombination, lifetime, and trapping

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3271526

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    J. L. Davis and M. K. Norr, J. Appl. Phys. 37, 1670 (1966)JAPIAU000037000004001670000001.

    A. B. Preobrajenski, K. Barucki, and T. Chassé, Phys. Rev. Lett. 85, 4337 (2000).

    T. E. Fischer, Phys. Rev. 142, 519 (1966).

    R. M. Oman, J. Appl. Phys. 36, 2091 (1965)JAPIAU000036000006002091000001.

    D. E. Eastman, Phys. Rev. B 2, 1 (1970).


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