Hostname: page-component-8448b6f56d-qsmjn Total loading time: 0 Render date: 2024-04-16T21:00:56.438Z Has data issue: false hasContentIssue false
  • English
  • Français

Trap Effects in PbS Quantum Dots

Published online by Cambridge University Press:  01 February 2011

Peter D. Persans ,
Aleksey Filin ,
Feiran Huang ,
Andrew Vitek ,
Pratima G.N. Rao  and
Robert H. Doremus
Peter D. Persans
Affiliation:
Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, New York
Aleksey Filin
Affiliation:
Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, New York
Feiran Huang
Affiliation:
Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, New York
Andrew Vitek
Affiliation:
Department of Physics, Bethel College, Minnesota
Pratima G.N. Rao
Affiliation:
Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York
Robert H. Doremus
Affiliation:
Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York
Get access

Abstract

We have found that traps can dominate important relaxation processes in PbS nanoparticles prepared by precipitation in borosilicate glass. The primary photoluminescence peak energy falls about 50 meV below the lowest absorption peak energy and has a long decay time of ∼4 μs. Photoinduced bleaching of the lowest absorption peak also has a long decay lifetime of ∼2 μs. Photoinduced bleaching also exhibits a surprisingly long rise time of hundreds of nanoseconds. Such long-lifetime effects must be attributed to multiple traps.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 789 , 2003 , N15.37
Copyright
Copyright © Materials Research Society 2004

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

REFERENCES

1. Cruz, C.H.B., Cesar, C.L., Barbosa, L.C., de Paula, A.M., and Tsuda, S., Appl. Surf. Sci., 1997. 109(110): p. 30–5.Google Scholar
2. Guerreiro, P.T., Ten, S., Borrelli, N.F., Butty, J., Jabbour, G.E., and Peyghambanan, N., Appl. Phys. Lett., 1997. 71(12): p. 1595.Google Scholar
3. Gulbinas, V., Dementjev, A., Valkunas, L., Tamulaitis, G., Motchalov, L., and Raaben, H., Proc. SPIE, 2001. 4318: p. 26–30.Google Scholar
4. Malyarevich, A.M., Denisov, I.A., Savitsky, V.G., Yumashev, K.V., and Lipovskii, A.A., Appl. Opt., 2000. 39(24): p. 4345.Google Scholar
5. Malyarevich, A.M., Savitsky, V.G., Denisov, I.A., Prokoshin, P.V., Yumashev, K.V., Raaben, E., Zhilin, A.A., and Lipovskii, A.A., Phys. Stat. Sol. B, 2001. 224(1): p. 253–6.Google Scholar
6. Malyarevich, A.M., Savitski, V.G., Prokoshin, P.V., Posnov, N.N., Yumashev, K.V., Raaben, E., and Zhilin, A.A., J. Opt. Soc. Am. B, 2002. 19(1): p. 28–32.Google Scholar
7. Tamulaitis, G., Gulbinas, V., Kodis, G., Dementjev, A., Valkunas, L., Motchalov, I., and Raaben, H., J. of Appl. Phys., 2000. 88(1): p. 178.Google Scholar
8. Wundke, K., Auxier, J.M., Schulzgen, A., Peyghambarian, N., and Borrelli, N.F., Technical Digest. CLEO ′99, 1999: p. 318.Google Scholar
9. Wundke, K., Potting, S., Auxier, J., Schulzgen, A., Peyghambarian, N., and Borrelli, N.F., Appl. Phys. Lett., 2000. 76(1): p. 10–12.Google Scholar
10. Rao, P.N., Cadmium sulfide and lead sulfide quantum dots in glass: processing, growth, and optical absorption. 2001, Rensselaer Polytechnic Institute: Troy.Google Scholar
11. Kang, I. and Wise, F.W., J. Opt. Soc. Am. B, 1997. 14(7): p. 1632–46.Google Scholar
12. Wise, F.W., Acc. Chem. Res., 2000. 33: p. 773–780.Google Scholar
13. Huang, F., Nonlinear Optical Studies of the Properties of Nanoparticles, in Physics. 2003, Rensselaer Polytechnic Institute: Troy. p. 122.Google Scholar
14. Huang, F., Filin, A., Doremus, R., Rao, P.N., and Persans, P.D., Mat. Res. Soc. Symp. Proc., 2003. 737: p. 163.Google Scholar
15. Nirmal, M., Norris, D.J., Kuno, M., Bawendi, M.G., Efros, A.L., and Rosen, M., Phys. Rev. Lett., 1995. 75: p. 3728.Google Scholar
16. Do, H., Chen, C., Krishnan, R., Krauss, T.D., Harbold, J.M., Wise, F.W., Thomas, M.G., and Silcox, J., Nano Lett., 2002. 2: p. 1321.Google Scholar
17. Stokes, K.L., Modulation spectroscopy of semiconductor nanocrystals. 1995, Rensselaer Polytechnic Institute: Troy, NY.Google Scholar
18. Stokes, K.L. and Persans, P.D., Phys. Rev. B, 1996. 54: p. 1892 Google Scholar