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Strong Photoluminescence in the Near-Infrared from Colloidally-Prepared HgTe Nanocrystals

Published online by Cambridge University Press:  09 August 2011

M. T. Harrison
Affiliation:
BT Laboratories, Martlesham Heath, Ipswich, Suffolk, IP5 3RE, UK
S. V. Kershaw
Affiliation:
BT Laboratories, Martlesham Heath, Ipswich, Suffolk, IP5 3RE, UK
M. G. Burt
Affiliation:
BT Laboratories, Martlesham Heath, Ipswich, Suffolk, IP5 3RE, UK
A. L. Rogach
Affiliation:
Institut für Physikalische Chemie, Universität Hamburg, 20146 Hamburg, Germany.
A. Kornowski
Affiliation:
Institut für Physikalische Chemie, Universität Hamburg, 20146 Hamburg, Germany.
A. Eychmüller
Affiliation:
Institut für Physikalische Chemie, Universität Hamburg, 20146 Hamburg, Germany.
H. Weller
Affiliation:
Institut für Physikalische Chemie, Universität Hamburg, 20146 Hamburg, Germany.
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Abstract

We report here the first measurement of strong near-infrared room temperature photoluminescence (PL) from colloidally-prepared HgTe nanocrystals. X-ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM) measurements indicate that the nanoparticles are in the cubic coloradoite phase, with a diameter of approximately 4 nm. The absorption spectrum shows a pronounced electronic transition in the near-infrared, and the broad PL appears to consist of several overlapping features between 800 and 1400 nm with a peak at 1080 nm, which represent a dramatic shift from bulk HgTe behaviour. The quantum efficiency (QE) of the freshly prepared sample is around 50%, which is among the highest ever reported for a nanocrystalline material. Over a period of several days, the luminescence shifts further into the infrared yielding more dominant longer wavelength features. The observation of this strong infrared luminescence makes this material a promising candidate for application in optical telecommunication systems.

Type
Research Article
Copyright
Copyright © Materials Research Society 1999

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References

1. Efros, Al. L. and Efros, A. L., Sov. Phys. – Semicond. 16, p. 772 (1982).Google Scholar
2. Rossetti, R., Nakahara, S., and Brus, L. E., J. Chem. Phys. 79, p. 1,086 (1983).CrossRefGoogle Scholar
3. Weller, H., Angew. Chem. Int. Ed. Engl. 32, p. 41 (1993).CrossRefGoogle Scholar
4. Weller, H., Adv. Mater. 5, p. 88 (1993).CrossRefGoogle Scholar
5. Alivisatos, A. P., J. Phys. Chem. 100, p. 13,226 (1996).CrossRefGoogle Scholar
6. Zhang, J. Z., Acc. Chem. Res. 30, p. 423 (1997).CrossRefGoogle Scholar
7. Klein, D. L., Roth, R., Lim, A. K. L., Alivisatos, A. P., and McEuen, P. L., Nature 389, p. 699 (1997).CrossRefGoogle Scholar
8. Feldheim, D. L. and Keating, C. D., Chem. Soc. Rev. 28, p. 1(1998).CrossRefGoogle Scholar
9. Colvin, V. L., Schlamp, M. C., and Alivisatos, A. P., Nature, 370, p. 354 (1994).CrossRefGoogle Scholar
10. Dabbousi, B. O., Bawendi, M. G., Onitsuka, O., and Rubner, M. F., Appl. Phys. Lett. 66, p. 1,316 (1995).CrossRefGoogle Scholar
11. Gao, M., Richter, B., Kirstein, S., and Möhwald, H., J. Phys. Chem. B. 102, p. 4,096 (1998).Google Scholar
12. Landolt-Bornstein, , Numerical Data and Functional Relationships in Science and Technology: New Series. Vol.17b: Semiconductors, Springer-Verlag, Berlin, (1982), p. 239 & 465.Google Scholar
13. Rajh, T., Micic, O. I., and Nozik, A. J., J. Phys. Chem. 97, p. 11,999 (1993).CrossRefGoogle Scholar
14. Hässelbarth, A., Eychmüller, A., Eichberger, R., Giersig, M., Mews, A., and Weller, H., J. Phys. Chem. 97, p. 5,333 (1993).Google Scholar
15. Vossmeyer, T., Katsikas, L., Giersig, M., Popovic, I. G., Diesner, K., Chemseddine, A., Eychmüller, A., and Weller, H., J. Phys. Chem. 98, p. 7,665 (1994).CrossRefGoogle Scholar
16. Rogach, A. L., Katsikas, L., Kornowski, A., Su, D., Eychmüller, A., and Weller, H., Ber. Bunsenges. Phys. Chem. 100, p. 1,772 (1996).CrossRefGoogle Scholar
17. Kakudo, Masao and Kasai, Nobutami, X-Ray Diffraction by Polymers, Kodansha Scientific, Tokyo, (1972), p. 329.Google Scholar

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