Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-25T18:05:34.318Z Has data issue: false hasContentIssue false
  • English
  • Français

Organic Light Emitting Devices Fabricated from Semiconducting Nanospheres

Published online by Cambridge University Press:  11 February 2011

Thomas Piok ,
Franz P. Wenzl ,
Stefan Gamerith ,
Christoph Gadermaier ,
Satish Patil ,
Rivelino Montenegro ,
Thomas Kietzke ,
Dieter Neher ,
Ullrich Scherf  and
Katharina Landfester
...Show all authors
Thomas Piok
Affiliation:
Christian Doppler Laboratory Advanced Functional Materials, Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria. Christian Doppler Laboratory Advanced Functional Materials, Institute of Nanostructured Materials and Photonics, Franz-Pichler-Strasse 30, A-8160 Weiz, Austria.
Franz P. Wenzl
Affiliation:
Christian Doppler Laboratory Advanced Functional Materials, Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria.
Stefan Gamerith
Affiliation:
Christian Doppler Laboratory Advanced Functional Materials, Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria. Christian Doppler Laboratory Advanced Functional Materials, Institute of Nanostructured Materials and Photonics, Franz-Pichler-Strasse 30, A-8160 Weiz, Austria.
Christoph Gadermaier
Affiliation:
Christian Doppler Laboratory Advanced Functional Materials, Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria. Christian Doppler Laboratory Advanced Functional Materials, Institute of Nanostructured Materials and Photonics, Franz-Pichler-Strasse 30, A-8160 Weiz, Austria.
Satish Patil
Affiliation:
Department of Chemistry, BUGH Wuppertal, Gauss-Str. 20 D-42097 Wuppertal, Germany.
Rivelino Montenegro
Affiliation:
Max Planck Institute of Colloids and Interfaces, Research Campus Golm, D-14424 Potsdam, Germany.
Thomas Kietzke
Affiliation:
Institute of Physics, University of Potsdam, Am Neuen Palais 10, D-14469 Potsdam, Germany
Dieter Neher
Affiliation:
Institute of Physics, University of Potsdam, Am Neuen Palais 10, D-14469 Potsdam, Germany
Ullrich Scherf
Affiliation:
Department of Chemistry, BUGH Wuppertal, Gauss-Str. 20 D-42097 Wuppertal, Germany.
Katharina Landfester
Affiliation:
Max Planck Institute of Colloids and Interfaces, Research Campus Golm, D-14424 Potsdam, Germany.
Emil J.W. List
Affiliation:
Christian Doppler Laboratory Advanced Functional Materials, Institute of Solid State Physics, Graz University of Technology, Petersgasse 16, A-8010 Graz, Austria. Christian Doppler Laboratory Advanced Functional Materials, Institute of Nanostructured Materials and Photonics, Franz-Pichler-Strasse 30, A-8160 Weiz, Austria.
Get access

Abstract

Organic light emitting diodes (OLEDs) have been fabricated from organic semiconducting polymer nanospheres (SPNs) which have been deposited from aqueous dispersions. The active layer of the devices consists of a single, homogeneous layer of light emitting SPNs, as verified by optical, interferometric and surface probe measurements. Different batches of SPNs with different SPN diameters have been tested (69nm, 95nm, 126nm and 150 nm). All SPN-based OLEDs exhibit a light emission onset corresponding to the SPN energy gap (ca. 2.7 eV for m-LPPP, a semiconducting para-phenylene ladder polymer). The low onset is attributed to field enhanced injection of charge carriers at the aluminum cathode due to the formation of stalactite-type nanostructures. A detailed comparison of the SPN-based and bulk semiconducting polymer films reveals no differences in the basic optoelectronic properties.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 738: Symposium G – Spatially Resolved Characterization of Local Phenomena in Materials and Nanostructures , 2002 , G8.10
Copyright
Copyright © Materials Research Society 2003

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERNCES

Friend, R. H., Gymer, R. W., Holmes, A. B., Burroughes, J. H., Marks, R. N., Taliani, C., Bradley, D. D. C., Dos Santos, D. A., Brédas, J. L., Lögdlund, M., Salaneck, W. R., Nature 397, 121 (1999).Google Scholar
Pei, Q., Yu, G., Zhang, C., Yang, Y. and Heeger, A. J., Science 269, 1086 (1995).Google Scholar
Sariciftci, N. S., Smilowitz, L., Heeger, A. J., Wudl, F., Science 258, 1474 (1992).Google Scholar
Yu, G., Gao, J., Hummelen, J. C., Wudl, F., Heeger, A., Science 270, 1789 (1995).Google Scholar
Stagira, S., Zavelani-Rossi, M., Nisoli, M., DeSilvestri, S., Lanzani, G., Zenz, C., Mataloni, P., Leising, G., Appl. Phys. Lett. 73, 2860 (1998).Google Scholar
6. Garnier, F., Hajlaoui, R., Yassar, A., Srivastava, P., Science 265, 1684 (1994).Google Scholar
7. Ho, P. K. H., Thomas, D. S., Friend, R. H., Tessler, N., Science 285, 233 (1999).Google Scholar
8. Landfester, K., Montenegro, R., Scherf, U., Güntner, R., Asawapirom, U., Patil, S., Neher, D., Kietzke, T., Adv. Mater. 14, 651 (2002).Google Scholar
9. Landfester, K., Macromol. Rapid Comm. 22, 896 (2001).Google Scholar
10. Landfester, K., Adv. Mater. 13, 765 (2001).Google Scholar
11. Chang, W.-P., Whang, W.-T., Polymer 37, 4229 (1996)Google Scholar
12. Cheng, Z., Russel, W. B., Chaikin, P. M., Nature 401, 893 (1999).Google Scholar
13. Scherf, U., Müllen, K., Makromol. Chem. Rapid Commun. 12, 489 (1991).Google Scholar
14. Bliznyuk, V., Ruhstaller, B., Brock, P. J., Scherf, U., Carter, S. A., Adv. Mater. 11, 1257 (1999).Google Scholar
15. Yan, M., Rothberg, L. J., Papadimitrakopoulos, F., Galvin, M. E., Miller, T. M., Phys. Rev. Lett. 73, 744 (1994).Google Scholar
16. List, E. J. W., Kim, C. H., Shinar, J., Pogantsch, A., Leising, G., Graupner, W., Appl. Phys. Lett. 76, 2083 (2000).Google Scholar
17. Pope, M. and Swenberg, C. E., Electronic Processes in Organic Crystals and Polymers, (2nd ed. (Oxford University Press, NY, 1999).Google Scholar
18. Tasch, S., Kranzelbinder, G., Leising, G., Scherf, U., Phys. Rev. B. 55, 5079 (1997).Google Scholar
19. Lakowicz, J.R., Principles of Fluorescence Spectroscopy, (Plenum Press, New York, 1983)Google Scholar
20. List, E.J.W., Creely, C., Leising, G., Schulte, N., Schlüter, A.D., Scherf, U., Müllen, K., Graupner, W., Chem Phys Lett. 325, 132 (2000).Google Scholar
21. List, E. J. W., Guentner, R., Scandiucci de Freitas, P., Scherf, U., Adv. Mater. 14, 374 (2002).Google Scholar
22. Piok, T., Wenzl, F.P., Scherf, U., Landfester, K. and List, E.J.W. (unpublished results).Google Scholar
23. Deckman, H.W., Dunsmuir, J.H., Appl. Phys. Lett. 41, 377 (1982).Google Scholar
24. For no particular reason SPN with a diameter of ca. 94 nm for m-LPPP and 74 nm for PF11112 have been used for the preparation of the OLEDs.Google Scholar
25. Tasch, S., Niko, A., Leising, G., Scherf, U., Appl. Phys. Lett. 68, 1090 (1996).Google Scholar
26. deMello, J. C., Tessler, N., Graham, S. C., Friend, R. H., Phys. Rev. B 57, 12951, (1998)Google Scholar
27. Yang, Y., Westerweele, E., Zhang, C., Smith, P., Heeger, A.J., J. Appl. Phys. 77, 694 (1995).Google Scholar