Impact of thickness of liquid crystal layer on response rate and exponential gain coefficient with assistance of ZnSe film

A response time as short as 5.4 ms and an exponential gain coefficient as large as 1795.0  cm(-1) were obtained in C(60) doped 4,4'-n-pentylcyanobiphenyl liquid crystal cells sandwiched with two indium tin oxide glass plates coated with nanoscale photoconductive ZnSe films, which is believed to...

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Bibliographic Details
Published in:Applied optics (2004) 2014-12, Vol.53 (36), p.8456-8462
Main Authors: Meng, Cuiling, Zhao, Hua, Xue, Tingyu, Fu, Jiayin, Zhang, Jingwen
Format: Article
Language:English
Subjects:
Buckminsterfullerene
Coefficients
Fullerenes
Gain
Indium tin oxide
Liquid crystals
Nanostructure
Zinc selenides
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Summary:A response time as short as 5.4 ms and an exponential gain coefficient as large as 1795.0  cm(-1) were obtained in C(60) doped 4,4'-n-pentylcyanobiphenyl liquid crystal cells sandwiched with two indium tin oxide glass plates coated with nanoscale photoconductive ZnSe films, which is believed to be facilitating charge-carrier generation and transportation and, hence, to be responsible for the fast response rate. The surface-mediated photorefractive effect and the ZnSe interlayers were both behind the high gain coefficients. The two-dimensional diffraction patterns observed in our system are also discussed.
ISSN:1559-128X
2155-3165
DOI:10.1364/AO.53.008456