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

被引：26

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

页码：1011 / 1014

页数：4

共 50 条

[41] Synthesis and optical properties of core-multi-shell CdSe/CdS/ZnS quantum dots: Surface modifications [J].

Ratnesh, R. K. ;

Mehata, Mohan Singh .

OPTICAL MATERIALS, 2017, 64 :250-256

[42] Tunable optical, electro-optical and dielectric properties of eco-friendly graphene quantum dots-nematic liquid crystal composites [J].

Neha ;

Singh, Gautam ;

Malik, Praveen ;

Kumar, Sanjeev ;

Malik, Poonma ;

Singh, Ashwani Kumar ;

Supreet .

LIQUID CRYSTALS, 2023, 50 (13-14) :2345-2359

[43] Multicolor electrochemiluminescence of core-shell CdSe@ZnS quantum dots based on the size effect [J].

Li, Qi-Le ;

Ding, Shou-Nian .

SCIENCE CHINA-CHEMISTRY, 2016, 59 (11) :1508-1512

[44] Nanoscale luminescence characteristics of CdSe/ZnS quantum dots hybridized with organic and metal nanowires: energy transfer effects [J].

Lee, Yong-baek ;

Park, Sungyeoun ;

Lee, Sunmi ;

Kim, Jeongyong ;

Lee, Kwang-Sup ;

Joo, Jinsoo .

JOURNAL OF MATERIALS CHEMISTRY C, 2013, 1 (11) :2145-2151

[45] Dielectric and electro-optical properties of nematic liquid crystal p-methoxybenzylidene p-decylaniline dispersed with oil palm leaf based porous carbon quantum dots [J].

Rastogi, Ayushi ;

Tripathi, Pankaj Kumar ;

Manohar, Tarsh ;

Manohar, Rajiv .

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, 2023, 44 (06) :942-951

[46] Electrochemical Charging Effect on the Optical Properties of InP/ZnSe/ZnS Quantum Dots [J].

Park, Jumi ;

Won, Yu-Ho ;

Kim, Taehyung ;

Jang, Eunjoo ;

Kim, Dongho .

SMALL, 2020, 16 (41)

[47] Effect of size and shell: Enhanced optical and surface properties of CdS, ZnS and CdS/ZnS quantum dots [J].

Kumar, Hitanshu ;

Barman, P. B. ;

Singh, Ragini Raj .

PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 2015, 67 :168-177

[48] Ecotoxicology impact of silica-coated CdSe/ZnS quantum dots internalized in Chlamydomonas reinhardtii algal cells [J].

Elzorkany, Heba Elsayed ;

Farghali, Mohamed A. ;

Hassan, Mohamed A. ;

El-sayed, Kh ;

Canonico, Myriam ;

Konert, Grzegorz ;

Farroh, Khaled ;

Elshoky, Hisham A. ;

Kana, Radek .

SCIENCE OF THE TOTAL ENVIRONMENT, 2019, 666 :480-489

[49] Glyco-Coated CdSe/ZnS Quantum Dots as Nanoprobes for Carbonic Anhydrase IX Imaging in Cancer Cells [J].

Biagiotti, Giacomo ;

Angeli, Andrea ;

Giacomini, Arianna ;

Toniolo, Gianluca ;

Landini, Luca ;

Salerno, Gianluca ;

Mannelli, Lorenzo Di Cesare ;

Ghelardini, Carla ;

Mello, Tommaso ;

Mussi, Silvia ;

Ravelli, Cosetta ;

Marelli, Marcello ;

Cicchi, Stefano ;

Menna, Enzo ;

Ronca, Roberto ;

Supuran, Claudiu T. ;

Richichi, Barbara .

ACS APPLIED NANO MATERIALS, 2021, 4 (12) :14153-14160

[50] Exploring the electro-optical properties of nematic liquid crystal through incorporation of ZnCuGaS2 core/shell quantum dots [J].

Sutar, Ankita ;

Sarnaik, Prathmesh ;

Doke, Swapnil ;

Haque, M. Abdul ;

Kahane, Shital .

LIQUID CRYSTALS, 2024, 51 (07) :1118-1126

← 1 2 3 4 5 →