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Chin. Opt. Lett.
 Home  List of Issues    Issue 09 , Vol. 05 , 2007    Study of white light emission from ZnS/PS composite system


Study of white light emission from ZnS/PS composite system
Caifeng Wang1;2, Qingshan Li1;3, Lei Lu1, Lichun Zhang1, Hongxia Qi1
1College of Physics and Engineering, [Qufu Normal University], Qufu 273165

2Department of Physics and Electronics Science, [Binzhou University], Binzhou 256600

3[Ludong University], Yantai 264025

Chin. Opt. Lett., 2007, 05(09): pp.546-548-3

DOI:
Topic:Optoelectronics
Keywords(OCIS Code): 250.5230  310.6860  230.4170  

Abstract
ZnS films were deposited by pulsed laser deposition (PLD) on porous silicon (PS) substrates formed by electrochemical anodization of p-type (100) silicon wafer. The photoluminescence (PL) spectra of ZnS/PS composites were measured at room temperature. Under different excitation wavelengths, the relative integrated intensities of the red light emission from PS layers and the blue-green emission from ZnS films had different values. After samples were annealed in vacuum at different temperatures (200, 300, and 400 Celsius degree) for 30 min respectively, a new green emission located at around 550 nm appeared in the PL spectra of all ZnS/PS samples, and all of the ZnS/PS composites had a broad PL band (450-700 nm) in the visible region, exhibiting intensively white light emission.

Copyright: © 2003-2012 . This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Received:2006/12/12
Accepted:
Posted online:

Get Citation: Caifeng Wang, Qingshan Li, Lei Lu, Lichun Zhang, Hongxia Qi, "Study of white light emission from ZnS/PS composite system," Chin. Opt. Lett. 05(09), 546-548-3(2007)

Note: This work was supported by the Natural Science Foundation of Shandong Province under Grant No. Y2002A09. C. Wang's e-mail address is cfwang_2004@163.com.



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