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Photoluminescences (PLs), time-resolved PL spectra, and PL intensities each as a function of excitation power from plasmon-enhanced single InAs quantum dots (QDs) are measured for studying the effect of photoluminescence enhancement at a low temperature of 5 K. The 5 nm gold films are deposited on the surface of InAs QD sample by using electron beam evaporation technique, which form nano-gold island membrane structures. It is found that the gold island film is conducive to the enhancement of QD PL intensity and the maximal PL intensity increases up to about 5 times the PL intensity without gold island film. The physical mechanism of the PL increase is that the gold island film nanostructure can improve the QD PL collection efficiency which is very important for realizing the bright single photon sources.
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Keywords:
- single InAs quantum dots /
- nano-gold island membrane structures /
- photoluminescence enhancement
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[1] Michler P 2009 Single Semiconductor Quantum Dots (Berlin, Heidelberg: Springer-Verlag) pp3, 4
[2] Valev V K, De Clercq B, Biris C G, Zheng X, Vandendriessche S, Hojeij M, Denkova D, Jeyaram Y, Panoiu N C, Ekinci Y, Silhanek A V, Volskiy V, Vandenbosch G A E, Ameloot M, Moshchalkov V V, Verbiest T 2012 Adv. Mater. 24 208
[3] Li J, Gu Y, Zhou F, Li Z Y, Gong Q H 2009 J. Mod. Opt. 56 1396
[4] Zhang X F, Yan X 2013 Acta Phys. Sin. 62 037805 (in Chinese) [张兴坊, 闫昕 2013 62 037805]
[5] Zhou W, Dridi M, Suh J Y, Chul H K, Dick T C 2013 Nature Nanotechnol. 8 506
[6] van Beijnum F, van Veldhoven P J, Geluk E J, de Dood M J A, Hooft G W, van Exter M P 2013 Phys. Rev. Lett. 110 206802
[7] Lin J, Dellinger J, Genevet P, Cluzel B, Forne F D, Capasso F 2012 Phys. Rev. Lett. 109 093904
[8] Belacel C, Habert B, Bigourdan F, Marquier F, Hugonin J P, Michaelis S, Lafosse X, Coolen L 2013 Nano Lett. 13 1516
[9] Martino G D, Sonnefraud Y, Stéphane K C, Tame M 2012 Nano Lett. 12 2504
[10] Gazzano O, de Vasconcellos S M, Gauthron K, Symonds C, Bloch J, Voisin P, Bellessa J, Lemaître A, Senellart P 2011 Phys. Rev. Lett. 107 247402
[11] Gazzano O, de Vasconcellos S M, Gauthron K, Symonds C, Voisin P, Bellessa J, Lemaître A, Senellart P 2012 Appl. Phys. Lett. 100 232111
[12] Yuan J Y, Jin C Y, Skacel M, Urbańczyk A, Xia T, van Veldhoven P J, Notzel R 2013 Appl. Phys. Lett. 102 191111
[13] Eyal C H, Garnett W B, Iddo P, Joseph S, Israel B J 2012 Nano Lett. 12 4260
[14] Busson M P, Rolly B, Stout B, Bonod N, Bidault S 2012 Nature Commun. 3 962
[15] Khn S, Hakanson U, Rogobete L, Sandoghdar V 2006 Phys. Rev. Lett. 97 017402
[16] Esteban R, Teperik T V, Greffet J J 2010 Phys. Rev. Lett. 104 026802
[17] Sharonda J L, Mason R M, Marcus J, Patrick J M 2013 Nano Lett. 13 1662
[18] Salomon A, Gordon R J, Prior Y, Seideman T, Sukharev M 2012 Phys. Rev. Lett. 109 073002
[19] Gu Y, Huang L, Martin O J F, Gong Q H 2010 Phys. Rev. B 81 193103
[20] de Leon N P, Shields B J, Yu C L, Englund D E, Akimov A V, Lukin M D, Park H 2012 Phys. Rev. Lett. 108 226803
[21] Du L X, Hu L, Zhang B P, Cai X K, Lou T G, Wu H Z 2011 Acta Phys. Sin. 60 117803 (in Chinese) [杜凌霄, 胡炼, 张兵坡, 才玺坤, 楼腾刚, 吴惠桢 2011 60 117803]
[22] Anger P, Bharadwaj P, Novotny L 2006 Phys. Rev. Lett. 96 113002
[23] Pavaskar P, Hsu I K, Theiss J, Hung W H, Cronin S B 2013 J. Appl. Phys. 113 034302
[24] Pfeiffer M, Lindfors K, Armando P A, Schmidt O G, Giessen H, Lippitz M 2012 Phys. Status Solidi B 249 678
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