Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.

Science 9 July 1999:
Vol. 285. no. 5425, pp. 233 - 236
DOI: 10.1126/science.285.5425.233
Prev | Table of Contents | Next

Reports

All-Polymer Optoelectronic Devices

Peter K. H. Ho, D. Stephen Thomas, Richard H. Friend, Nir Tessler *

Composites of nanoparticles and conjugated polymers that exhibit composition-tunable optical constants have been developed for use in semiconducting photonic structures. For example, the 550-nanometer wavelength in-plane refractive index of poly(p-phenylenevinylene)-silica composites can be tailored over the range of 1.6 to 2.7, allowing efficient distributed Bragg reflectors and waveguides to be fabricated. Low levels of chemical doping improve electrical conductivity through these structures without detriment to their photonic properties. Exemplifying these concepts, all-polymer microcavities and microcavity light-emitting diodes were demonstrated. Appropriate confinement of photons and electron-hole pairs in these organic semiconductor-based structures can be achieved.

Cavendish Laboratory, Madingley Road, Cambridge CB3 0HE, UK.
*   To whom correspondence should be addressed. E-mail: nt202{at}phy.cam.ac.uk

Read the Full Text


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Templating Organic Semiconductors via Self-Assembly of Polymer Colloids.
R. Mezzenga, J. Ruokolainen, G. H. Fredrickson, E. J. Kramer, D. Moses, A. J. Heeger, and O. Ikkala (2003)
Science 299, 1872-1874
   Abstract »    Full Text »    PDF »
Photoexcited breathers in conjugated polyenes: An excited-state molecular dynamics study.
S. Tretiak, A. Saxena, R. L. Martin, and A. R. Bishop (2003)
PNAS 100, 2185-2190
   Abstract »    Full Text »    PDF »
Photon-Mediated Hybridization of Frenkel Excitons in Organic Semiconductor Microcavities.
D. G. Lidzey, D. D. Bradley, A. Armitage, S. Walker, and M. S. Skolnick (2000)
Science 288, 1620-1623
   Abstract »    Full Text »
Evidence for a strong San Andreas fault.
C. H. Scholz (2000)
Geology 28, 163-166
   Abstract »    Full Text »    PDF »


To Advertise     Find Products

Science. ISSN 0036-8075 (print), 1095-9203 (online)