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Applied Physics Letters / Volume 99 / Issue 10 / ORGANIC ELECTRONICS AND PHOTONICS
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Appl. Phys. Lett. 99, 103305 (2011); http://dx.doi.org/10.1063/1.3631731 (3 pages)

Organic position sensitive photodetectors based on lateral donor-acceptor concentration gradients

Juan Cabanillas–Gonzalez1, Ovidio Peña–Rodríguez2,3,4, Inma Suarez Lopez5, Malte Schmidt2, M. Isabel Alonso2, Alejandro R. Goñi2,6, and Mariano Campoy–Quiles2

1Instituto Madrileño de Estudios Avanzados en Nanociencia (IMDEA-Nanociencia), Cantoblanco, 28049–Madrid, Spain
2Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Esfera UAB, Bellaterra 08193, Spain
3Centro de Microanálisis de Materiales, Universidad Autónoma de Madrid (CMAM-UAM), Cantoblanco, E-28049 Madrid, Spain
4Instituto de Óptica, Consejo Superior de Investigaciones Científicas (IO-CSIC), C/Serrano 121, E-28006 Madrid, Spain
5Dipartimento di Fisica, Politecnico di Milano, Pza. Leonardo da Vinci 32, Milano 20133, Italy
6Institució Catalana de Recerca i Estudis Avançats (ICREA), Passeig Lluis Companys 23, 08010 Barcelona, Spain

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(Received 7 June 2011; accepted 7 August 2011; published online 8 September 2011)

We report on an organic photodiode configuration based on a donor/acceptor bilayer with opposed complementary thickness gradients. We rely on the strong dependence of the optical field on thickness to achieve spatially dependent spectral responses, a proof-of-concept for position sensitive detection. Ratiometric photocurrent values at two wavelengths allow for position determination independently of the light intensity with a spatial resolution below 600 μm.

© 2011 American Institute of Physics

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KEYWORDS and PACS

Keywords

electric current measurement, photoconductivity, photodetectors, photodiodes

PACS

  • 85.60.Gz

    Photodetectors (including infrared and CCD detectors)

  • 85.60.Dw

    Photodiodes; phototransistors; photoresistors

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3631731

PUBLICATION DATA

ISSN

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

Publisher

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

  1. A. Hadipour, B. de Boer, and P. W. M. Blom, Adv. Funct. Mater. 18, 169 (2008).
  2. M. T. Lloyd, J. E. Anthony, and G. G. Malliaras, Mater. Today 10, 34 (2007).
  3. T. Stübinger and W. Brütting, J. Appl. Phys. 90, 3632 (2001)JAPIAU000090000007003632000001. [ISI]
  4. L. A. A. Pettersson, L. S. Roman, and O. Inganäs, J. Appl. Phys. 86, 487 (1999)JAPIAU000086000001000487000001. [ISI]
  5. A. C. Mayer, S. R. Scully, B. E. Hardin, M. W. Rowell, and M. D. McGehee, Mater. Today 10, 28 (2007).
  6. B. P. Rand, J. Xue, M. Lange, and S. R. Forrest, IEEE Photonics Technol. Lett., 15, 1279 (2003). [Inspec] [ISI]
  7. D. Kabra, Th. B. Singh, and K. S. Narayan, Appl. Phys. Lett. 85, 7073 (2004)APPLAB000085000021005073000001. [ISI]
  8. Z. Knittl, Optics of Thin Films (John Wiley & Sons, London, 1976).
  9. R. M. A. Azzam and N. M. Bashara, Ellipsometry and Polarized Light (North-Holland, Amsterdam, 1977).
  10. P. Peumans, A. Yakimov, and S. R. Forrest, J. Appl. Phys. 93, 3693 (2003).

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Figures (click on thumbnails to view enlargements)

FIG.1
(Color online) (a) Device configuration showing a thickness gradient of CuPc/C60 layers along the longitudinal direction (y-axis). (b) Normalized spectral response at four different positions along the longitudinal direction. Positions (1)–(4) are separated by 1 mm going from a C60-rich to a CuPc-rich area.

FIG.1 Download High Resolution Image (.zip file) | Export Figure to PowerPoint

FIG.2
(Color online) (a) Rescaled Raman spectra of CuPc, C60 and CuPc/C60 bilayer. (b) Raman peak intensity ratio (P4/P3) as a function of displacement in the longitudinal direction (along the gradient) moving from the C60-rich region to the CuPc-rich region. The experimental data was fitted using a quadratic polynomial law (solid line).

FIG.2 Download High Resolution Image (.zip file) | Export Figure to PowerPoint

FIG.3
(Color online) In-depth distribution of the optical field as a function of longitudinal position for (a) λ = 612 nm and (b) λ = 728 nm. (c) Photocurrent ratio at 612 nm and 728 nm (squares) as a function of position. The spatial dependence of the photocurrent was fitted (solid line) according to the field distributions at 612nm and 728 nm. Dashed lines indicate the thickness profiles of CuPc and C60 layers estimated by the fit.

FIG.3 Download High Resolution Image (.zip file) | Export Figure to PowerPoint



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