Artículos de revistas
Optical Properties Of Inn Nanocolumns: Electron Accumulation At Inn Non-polar Surfaces And Dependence On The Growth Conditions
Registro en:
Physica Status Solidi (c) Current Topics In Solid State Physics. , v. 6, n. SUPPL. 2, p. S553 - S556, 2009.
18626351
10.1002/pssc.200880898
2-s2.0-79251619299
Autor
Segura-Ruiz J.
Garro N.
Cantarero A.
Iikawa F.
Denker C.
Malindretos J.
Rizzi A.
Institución
Resumen
InN nanocolumns grown by plasma-assisted molecular beam epitaxy have been studied by photoluminescence (PL) and photoluminescence excitation (PLE). The PL peak energy was red-shifted with respect to the PLE onset and both energies were higher than the low temperature band-gap reported for InN. PL and PLE experiments for different excitation and detection energies indicated that the PL peaks were homogeneously broadened. This overall phenomenology has been attributed to the effects of an electron accumulation layer present atthe non-polar surfaces of the InN nanocolumns. Variations in the growth conditions modify the edge of the PLE spectra and the PL peak energies evidencing that the density of free electrons can be somehow controlled by the growth parameters. It was observed that In-BEP and substrate temperature leading to shorter In diffusion lengths diminished the effects of the electron accumulation layer on the optical properties. © 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. 6 SUPPL. 2 S553 S556 Sánchez-García, J.M., Grandal, J., Calleja, E., Lazic, S., Calleja, J.M., Trampert, A., (2006) Phys. Status Solidi B, 243, p. 1490 Stoica, T., Meijers, R., Calarco, R., Richter, T., Lüth, H., (2006) J. Cryst. Growth, 290, p. 241 Stoica, T., Meijers, R.J., Calarco, R., Richter, T., Sutter, E., Lüth, H., (2006) Nanolett, 6, p. 1541 Shen, C.-H., Chen, H.-Y., Lin, H.-W., Gwo, S., Klochikhin, A.A., Davydov, V.Y., (2006) Appl. Phys. Lett, 88, p. 253104 Denker, C., Malindretos, J., Werner, F., Limbach, F., Schuhmann, H., Niermann, T., Seibt, M., Angela Rizzi, (2008) Phys. Status Solidi C, 5, p. 1706 Calleja, E., Grandal, J., Sánchez-García, M.A., Niebelschütz, M., Cimalla, V., Ambacher, O., (2007) Appl. Phys. Lett, 90, p. 262110 Van de Walle, C.G., Segev, D., (2007) J. Appl. Phys, 101, p. 081704 Thakur, J.S., Danylyuk, Y.V., Haddad, D., Naik, V.M., Naik, R., Auner, G.W., (2007) Phys. Rev. B, 76, p. 035309 Burstein, E., (1954) Phys. Rev, 93, p. 632 Wu, J., Walukiewicz, W., Shan, W., Yu, K.M., Ager J.W. III, Haller, E.E., Lu, H., Schaff, W.J., (2002) Phys. Rev. B, 66, p. 201403 Arnaudov, B., Paskova, T., Paskov, P.P., Magnusson, B., Valcheva, E., Monemar, B., Lu, H., Akasaki, I., (2004) Phys. Rev. B, 69, p. 115216 Walukiewicz, W., Ager J.W. III, Yu, K.M., Liliental-Weber, Z., Wu, J., Li, S.X., Jones, R.E., Denlinger, J.D., (2006) J. Phys. D: Appl. Phys, 39, pp. R83 Klochikhin, A.A., Davydov, V.Y., Emtsev, V.V., Sakharov, A.V., Kapitonov, V.A., Andreev, B.A., Hai Lu, Schaff, W.J., (2005) Phys. Rev. B, 71, p. 195207 Feneberg, M., Däubler, J., Thonke, K., Sauer, R., Schley, P., Goldhahn, R., (2008) Phys. Rev. B, 77, p. 245207 Mahan, G.D., (1967) Phys. Rev, 153, p. 882 Mahboob, I., Veal, T.D., McConville, C.F., Lu, H., Schaff, W.J., (2004) Phys. Rev. Lett, 92, p. 036804 Lazić, S., Gallardo, E., Calleja, J.M., Agúllo-Rueda, F., Grandal, J., Sánchez-Garcia, M.A., Calleja, E., Trampert, A., (2007) Phys. Rev. B, 76, p. 205319