R G Singh et al 2009 J. Phys. D: Appl. Phys. 42 062002 doi:10.1088/0022-3727/42/6/062002
R G Singh1,4, Fouran Singh2, D Kanjilal2, V Agarwal3 and R M Mehra1,4
Show affiliationsWhite light emission across the extended visible region of the electromagnetic spectrum from the ZnO–porous silicon (PS) nanocomposite is reported. Nanocrystallites of ZnO were grown inside the spongy structures of PS by the chemical route of sol–gel spin coating. The property of the material arises from versatile interactions among the host structures of PS and ZnO. The origin of the observed extended white light emission from 1.4 to 3.3 eV is discussed by developing a flat band energy diagram.
81.16.Be Chemical synthesis methods
78.55.-m Photoluminescence, properties and materials
81.07.-b Nanoscale materials and structures: fabrication and characterization
78.67.-n Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures
Issue 6 (21 March 2009)
Received 5 December 2008, in final form 31 January 2009
Published 26 February 2009
R G Singh et al 2009 J. Phys. D: Appl. Phys. 42 062002
Santanu K Maiti 2009 Phys. Scr. 80 055704
Ivan Andric and Danijel Jurman JHEP01(2005)039
Jung A Lee et al 2008 J. Micromech. Microeng. 18 035012
Ian R Vernon and David Jennings JCAP07(2005)011
J-L Raimbault and P Chabert 2009 Plasma Sources Sci. Technol. 18 014017
Antonio Campos JCAP01(2005)010
G Ratel et al 2004 Metrologia 41 06016
Tomoko Gray et al 2007 Nanotechnology 18 044009
Bethany Jochim et al 2009 J. Phys. B: At. Mol. Opt. Phys. 42 091002