J. Semicond. > Volume 31 > Issue 3 > Article Number: 033002

White light photoluminescence from ZnS films on porous Si substrates

Wang Caifeng , Li Qingshan , Hu Bo and Li Weibing

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Abstract: ZnS films were deposited on porous Si (PS) substrates using a pulsed laser deposition (PLD) technique. White light emission is observed in photoluminescence (PL) spectra, and the white light is the combination of blue and green emission from ZnS and red emission from PS. The white PL spectra are broad, intense in a visible band ranging from 450 to 700 nm. The effects of the excitation wavelength, growth temperature of ZnS films, PS porosity and annealing temperature on the PL spectra of ZnS/PS were also investigated.

Key words: white light emission photoluminescence ZnS films porous Si

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Wang C F, Li Q S, Hu B, Li W B. White light photoluminescence from ZnS films on porous Si substrates[J]. J. Semicond., 2010, 31(3): 033002. doi: 10.1088/1674-4926/31/3/033002.

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History

Manuscript received: 18 August 2015 Manuscript revised: 12 October 2009 Online: Published: 01 March 2010

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