[1] [1] A. Polman, Science 322, 868 (2008).

[2] [2] S. Pillai, K. R. Catchpole, T. Trupke, and M. A. Green, J. Appl. Phys. 101, 093105 (2007).

[3] [3] D. M. Schaadt, B. Feng, and E. T. Yu, Appl. Phys. Lett. 86, 063106 (2005).

[4] [4] K. Nakayama, K. Tanabe, and H. A. Atwater, Appl. Phys. Lett. 93, 121904 (2008).

[5] [5] D. Derkacs, S. H. Lim, P. Matheu, W. Mar, and E. T. Yu, Appl. Phys. Lett. 89, 093103 (2006).

[6] [6] M. D. Yang, Y. K. Liu, J. L. Shen, C. H. Wu, C. A. Lin, W. H. Chang, H. H. Wang, H. I. Yeh, W. H. Chan, and W. J. Parak, Opt. Express 16, 15754 (2008).

[7] [7] T. V. Teperik, F. J. Garc′ a de Abajo, A. G. Borisov, M. Abdelsalam, P. N. Bartlett, Y. Sugawara, and J. J. Baumberg, Nature Photon. 2, 299 (2008).

[8] [8] K. R. Catchpole and A. Polman, Appl. Phys. Lett. 93, 191113 (2008).

[9] [9] D. Wu, X. Xu, and X. Liu, J. Chem. Phys. 129, 074711 (2008).

[10] [10] S. J. Oldenburg, J. B. Jackson, S. L. Westcott, and N. J. Halas, Appl. Phys. Lett. 75, 2897 (1999).

[11] [11] W. Ma, H. Yang, J. Liu, Z. Ni, D. Tang, and J. Yao, Acta Opt. Sin. (in Chinese) 30, 2629 (2010).

[12] [12] J. Liu, H. Yang, X. Luo, W. Ma, and Y. Liu, Acta Opt. Sin. (in Chinese) 30, 1092 (2010).

[13] [13] C. F. Bohren and D. R. Huffman, Absorption and Scattering of Light by Small Particles (Wiley, New York, 1983).

[14] [14] E. D. Palik, Handbook of Optical Constants of Solids (Academic, Washington, 1985).

[15] [15] Yu. A. Akimov, K. Ostrikov, and E. P. Li, Plasmonics 4, 107 (2009).