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Raman studies of optical phonons in vertical cadmium sulfide nanorod arrays

  • Dongjuan Xi (a1), Jianzhong Li (a2), Qibing Pei (a1) and Bin Chen (a2)

Abstract

Electrochemically grown cadmium sulfide (CdS) nanorod arrays were studied with Raman spectroscopy. The resonant Raman spectroscopy unravels the enhanced electron-phonon interaction up to the fifth-order multiphonon process in the vertically aligned CdS nanorods after annealing. Resonant Raman scattering at room temperature reveals a surface phonon mode at 253 cm−1 in the annealed nanorod. This unprecedented observation is accounted for by the lateral confinement in the nanorod whose average aspect ratio is approximately 5. An intersubband transition near 3000 cm−1 is also observed. These results point to important optoelectronic applications of this material.

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Corresponding author

a) Address all correspondence to this author. e-mail: bchen@mail.arc.nasa.gov

References

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1.Agarwal, R., Barrelet, C.J., Lieber, C.M.: Lasing in single cadmium sulfide nanorod optical cavities. Nano Lett. 5(5), 917(2005).
2.Mahan, G.D., Gupta, R., Xiong, Q., Adu, C.K., Eklund, P.C.: Optical phonons in polar semiconductor nanorods. Phys. Rev. B 68(7), 073402(2003).
3.Yu, H., Li, J., Loomis, R.A., Wang, L-W., Buhro, W.E.: Two- versus three-dimensional quantum confinement in indium phosphide wires and dots. Natural Materials l2, 517 (2003).
4.Krahne, R., Chilla, G., Schüller, C., Carbone, L., Kudera, S., Mannarini, G., Manna, L., Heitmann, D., Cingolan, R.: Confinement effects on optical phonons in polar tetrapod nanocrystals detected by resonant inelastic light scattering. Nano Lett. 6(3), 478(2006).
5.Singha, A., Roy, A.: Phonon confinement and surface phonon modes in CdS-CdS coreshell nanoocrystals. Rev. Adv. Mater. Sci. 10, 462 (2005).
6.Pan, A.L., Liu, R.B., Yang, Q., Zhu, Y.C., Zuo, J., Zou, B.S.: Stimulated emission behaviors from excitons in CdS nanoribbons. J. Phys.: Conference Series 28, 12 (2006).
7.Yong, H., Seung, P., Dongho, K.: Size-dependent surface phonon mode of CdSe quantum dots. Phys. Rev. B 59, 7285 (1991).
8.Demir, U., Shannon, C.: A scanning tunneling microscopy study of electrochemically grown cadmium sulfide monolayers on Au(ll1). Langmuir 10, 2794 (1999).
9.Yoshida, T., Yamaguchi, K., Kazitani, T., Sugiura, T., Minoura, H.: Atom-by-atom growth of cadmium sulfide thin films by: Electroreduction of aqueous Cd2+–SCN complex. J. Electroanal. Chem. 473, 209 (1999).
10.Xi, D. and Pei, Q.: Unpublished results.
11.Tell, B., Damen, T.C., Porto, S.P.S.: Raman effect in cadmium sulfide. Phys. Rev. 144, 771 (1966).
12.Abdi, A., Titova, L.V., Smith, L.M., Jackson, H.E., Yarrison-Rice, J.M., Lensch, J.L., Lauhon, L.J.: Resonant Raman scattering from CdS nanorods. Appl. Phys. Lett. 88, 043118 (2006).
13.Brunner, D., Angerer, H., Bustarret, E., Freudenberg, F., Höpler, R., Dimitrov, R., Ambacher, O., Stutzmann, M.: Optical constants of epitaxial AlGaN films and their temperature dependence. J. Appl. Phys. 82, 5090 (1997).
14.Ng, H.T., Chen, B., Li, J., Han, J., Meyyappan, M., Wu, J., Li, S.X., Haller, E.E.: Optical properties of single-crystalline ZnO nanorods on m-sapphire. Appl. Phys. Lett. 82(13), 2023(2003).
15.Koch, S.W., Haug, H., Schmieder, G., Bohnert, W., Klingshirn, C.: Stimulated intrinsic recombination processes in II-VI compounds. Phys. Status Solidi B 89, 431 (1978).
16.Shen, W.Z.: Exciton-longitudinal-optical phonon coupling in quantum wire and quantum dots. Physica B 322, 201 (2002).
17.Pan, A.L., Liu, R.B., Yang, Q., Zhu, Y.C., Zuo, J., Zou, B.S.: Stimulated emission behaviors from excitons in CdS nanoribbons. J. Phys.: Conference Series 28, 12 (2006).
18.Wang, Y., Meng, G., Zhang, L., Liang, C., Zhang, J.: Catalytic growth of large-scale single-crystal CdS nanorods by physical evaporation and their photoluminescence. Chem. Mater. 14, 1773 (2002).
19.Zhao, Q., Zhang, H., Xu, X., Wang, Z., Xu, J., Yua, D.: Optical properties of highly ordered AlN nanorod arrays grown on sapphire substrate. Appl. Phys. Lett. 86, 193101 (2005).
20.Balandin, A., Wang, K.L., Kouklin, N., Bandyopadhyay, S.: Raman spectroscopy of electrochemically self-assembled CdS quantum dots. Appl. Phys. Lett. 76(2), 137(2000).

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