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Journal of Zhejiang University SCIENCE A 2004 Vol.5 No.2 P.212-217


ZnS0.8Se0.2 film for high resolution liquid crystal light valve

Author(s):  SHEN Da-ke, HAN Gao-rong, DU Pi-yi, QUE Duan-lin, SOU I.K.

Affiliation(s):  State Key Laboratory of Silicon Material Science, Zhejiang University, Hangzhou 310027, China; more

Corresponding email(s):   dake.shen@gepex.ge.com, hgr@zju.edu.cn

Key Words:  UV LCLV, Transmission mode, Polycrystalline ZnS0.8Se0.2 thin film, MBE

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SHEN Da-ke, HAN Gao-rong, DU Pi-yi, QUE Duan-lin, SOU I.K.. ZnS0.8Se0.2 film for high resolution liquid crystal light valve[J]. Journal of Zhejiang University Science A, 2004, 5(2): 212-217.

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publisher="Zhejiang University Press & Springer",

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%DOI 10.1631/jzus.2004.0212

T1 - ZnS0.8Se0.2 film for high resolution liquid crystal light valve
A1 - SHEN Da-ke
A1 - HAN Gao-rong
A1 - DU Pi-yi
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A1 - SOU I.K.
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The structural characteristics and optical and electrical properties of molecular-beam-epitaxy (MBE) grown ZnS0.8Se0.2 thin films on indium-tin-oxide (ITO) glass substrates were investigated in this work. The X-ray diffraction (XRD) results indicated that high quality polycrystalline ZnS0.8Se0.2 thin film grown at the optimized temperature had a preferred orientation along the (111) planes. The transmission electron microscopy (TEM) cross-sectional micrograph of the sample showed a well defined columnar structure with lateral crystal dimension in the order of a few hundred angstroms. Ultraviolet (UV) photoresponsivity as high as 0.01 A/W had been demonstrated and for wavelengths longer than 450 nm, the response was down from the peak response by more than 3 orders of magnitude. The thin ZnS0.8Se0.2 photosensor layer, with a wide energy gap and anisotropic electrical property, makes a transmission UV liquid crystal light valve (LCLV) with high resolution feasible.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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