Effect of Dispersed CdSe/ZnS Quantum Dots on Optical and Electrical Characteristics of Nematic Liquid Crystal Cells

被引：25
|
作者：
Konshina, E. A. [1 ]
Gavrish, E. O.
Orlova, A. O.
Artem'ev, M. V.
机构：
[1] St Petersburg State Univ Informat Technol Mech &, St Petersburg 197101, Russia
来源：
TECHNICAL PHYSICS LETTERS | 2011年 / 37卷 / 11期
关键词：
NANOPARTICLES;
D O I：
10.1134/S1063785011110071
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We have studied the electrical and optical characteristics of cells filled with nematic liquid crystal (NLC) based on cyanobiphenyls with positive dielectric anisotropy, containing dispersed 3.5-nm-sized CdSe/ZnS composite semiconductor nanoparticles (quantum dots, QDs) with a concentration of 0.1-0.2 wt %. In addition to a decrease in the threshold voltage of the electrooptical splay effect, the doping with QDs leads also to a decrease in the phase delay of light and the effective dielectric permittivity of NLC cells. These characteristics are reduced by half during the storage of NLC cells containing about 0.2 wt % QDs, which is related to the self-organization of QDs.
引用
收藏
页码：1011 / 1014
页数：4
相关论文
共 50 条
  • [21] Enhanced dielectric, electrical and electro-optical properties: Towards understanding the interaction in mesophases of 8OCB liquid crystal dispersed with CdSe/ZnS quantum dots
    Rani, Aysha
    Sinha, Aloka
    JOURNAL OF MOLECULAR LIQUIDS, 2024, 398
  • [22] Optical and electrical control of circularly polarised fluorescence in CdSe quantum dots dispersed polymer stabilised cholesteric liquid crystal shutter
    Kumar, Rishi
    Raina, K. K.
    LIQUID CRYSTALS, 2016, 43 (07) : 994 - 1001
  • [23] Features of the Optical Response and Relaxation of the Nematic LC Doped with CdSe/ZnS Quantum Dots
    Galin, I. F.
    Shcherbinin, D. P.
    Gavrish, E. O.
    Konshina, E. A.
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2015, 612 (01) : 261 - 266
  • [24] Ligands Exchange, Studying the Stability and Optical Properties of CdSe/CdS/ZnS Quantum Dots with Liquid Crystal
    Al-Alwani, A. J.
    Chumakov, A. S.
    Albermani, M. S.
    Shinkarenko, O. A.
    Begletsova, N. N.
    Vostrikova, A. M.
    Gorbachev, I. A.
    Venig, S. B.
    Glukhovskoy, E. G.
    4TH INTERNATIONAL SCHOOL AND CONFERENCE ON OPTOELECTRONICS, PHOTONICS, ENGINEERING AND NANOSTRUCTURES (SAINT PETERSBURG OPEN 2017), 2017, 917
  • [25] Optical transitions in polarized CdSe, CdSe/ZnSe, and CdSe/CdS/ZnS quantum dots dispersed in various polar solvents
    Thuy, Ung Thi Dieu
    Liem, Nguyen Quang
    Thanh, Do Xuan
    Protiere, Myriam
    Reiss, Peter
    APPLIED PHYSICS LETTERS, 2007, 91 (24)
  • [26] Study of an interesting physical mechanism of memory effect in nematic liquid crystal dispersed with quantum dots
    Rastogi, Ayushi
    Agrahari, Kaushlendra
    Pathak, Govind
    Srivastava, Atul
    Herman, Jakub
    Manohar, Rajiv
    LIQUID CRYSTALS, 2019, 46 (05) : 725 - 735
  • [27] Impact of Doping CdSe/ZnS Quantum Dots on the Elasticity Coefficients of Nematic
    Vakulin, D. A.
    Frenkel, D. A.
    Gavrish, E. O.
    Konshina, E. A.
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2015, 612 (01) : 110 - 116
  • [28] A comparative study of spectral characteristics of CdSe and CdSe/ZnS quantum dots
    Cheng, Cheng
    Wang, Xiaoyan
    PROCEEDINGS OF INTERNATIONAL SYMPOSIUM ON BIOPHOTONICS, NANOPHOTONICS AND METAMATERIALS, 2006, : 362 - +
  • [29] Optical Response Features of LC Cells Doped with CdSe/ZnS Quantum Dots
    Galin, I. F.
    Konshina, E. A.
    MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 2015, 615 (01) : 57 - 62
  • [30] Nanocomposites of a nematic liquid crystal doped with magic-sized CdSe quantum dots
    Mirzaei, Javad
    Urbanski, Martin
    Yu, Kui
    Kitzerow, Heinz-S.
    Hegmann, Torsten
    JOURNAL OF MATERIALS CHEMISTRY, 2011, 21 (34) : 12710 - 12716
12345