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Reliable optoelectronic switchable device implementation by CdS nanowires conjugated bent-core liquid crystal matrix
Organic Electronics ( IF 2.7 ) Pub Date : 2019-12-11 , DOI: 10.1016/j.orgel.2019.105592
S.I. Asiya , Kaushik Pal , Gharieb S. El-Sayyad , M. Abd Elkodous , Catherine Demetriades , Samo Kralj , Sabu Thomas

Enhancing the performance of high luminescent and dielectrically capable cadmium sulfide nanowire (CdS NW) is of great importance, because of their promising ability in analyzing the dimensionality and size. The tuned physical characteristics of semiconductor CdS NWs allowed the manipulation of both electronic and optoelectronic devices at the nanoscale by dispersing a new bent core (BC) liquid crystal (LC) compound. This was derived from a 4-chlororesorcinol central core unit with two terephthalate based rod-like units carrying chiral (S)-3, 7-dimethyloctyloxy (namely ‘CPDB’) terminal chains, which have been synthesized in a pure solvo-chemical process. The mesomorphic properties of the newly-prepared bent-core LC, exhibiting an enantiotropy ‘Sm A’ phase as a result of dispersing 0.005% of CdS NWs, were investigated by several spectroscopic investigations. In addition, the hydrothermal fabrication of CdS NWs with a high-yield was modified with a cationic agent, cetyltrimethyl ammonium bromide (CTAB), which was utilized as a compatibilizer for providing a better interaction with LC molecules and giving a homogeneous solution. This work focused on the experimental investigation and optimization, using a combinational view of bent-core liquid crystal (CPDB) compound dispersion which was achieved in a controllable manner. The product of the resulting composite matrix has a very outstanding and promising behavior, e.g. semiconductor nanostructures emission polarization that can be manipulated using an external bias modulation of the novel switchable device, which was found quite convincing in the recent trends of brand-new technologies. In particular, the electro-optic responses by POM of various mesophases were investigated from the view point of the CdS incorporated bent-core LC matrix formation and transitional phase variants of ‘ON’ and ‘OFF’ states, which were depending on the geometrical parameters of CdS NW’s. Finally, the future challenges and prospects of any other nanomaterials dispersed into CPDB compound which will give rise to an increase of the mesomorphic range by preserving the mesophase type were explored in detail.



中文翻译:

通过CdS纳米线共轭弯曲芯液晶矩阵实现可靠的光电可开关器件实现

增强高发光和具有电介质功能的硫化镉纳米线(CdS NW)的性能非常重要,因为它们在分析尺寸和尺寸方面很有前途。半导体CdS NW的调谐物理特性允许通过分散新的弯曲核(BC)液晶(LC)化合物来在纳米级操纵电子和光电器件。这是由4-氯间苯二酚中央核心单元和两个带有手性(S)-3,7-二甲基辛氧基(即CPDB)末端链,已通过纯溶剂化学方法合成。通过数种光谱研究,研究了新制备的弯曲核LC的介晶性质,其由于分散了0.005%的CdS NW而表现出对映体'Sm A'相。此外,用阳离子剂十六烷基三甲基溴化铵(CTAB)改进了高产率CdS NWs的水热制备工艺,将其用作增容剂以提供与LC分子的更好相互作用并提供均相溶液。这项工作集中在实验研究和优化上,使用可控方式获得的弯曲芯液晶(CPDB)化合物分散体的组合视图。所得复合基质的产物具有非常杰出和有前途的行为,例如可以使用新型可切换设备的外部偏置调制来控制半导体纳米结构的发射极化,这在全新技术的最新趋势中非常有说服力。特别是,从结合了CdS的弯曲核LC基质形成和“ ON”和“ OFF”状态的过渡相变体(取决于几何参数)的角度出发,研究了各种中间相的POM产生的电光响应。 CdS NW的数量。最后,详细探讨了分散在CPDB化合物中的任何其他纳米材料的未来挑战和前景,这些材料将通过保留中间相类型而引起介晶范围的增加。可以使用新型可切换设备的外部偏置调制来控制半导体纳米结构的发射极化,这在全新技术的最新趋势中非常有说服力。尤其是,从结合了CdS的弯曲核LC基质形成以及“ ON”和“ OFF”状态的过渡相变体(取决于几何参数)的角度出发,研究了各种中间相在POM的电光响应。的CdS NW。最后,详细探讨了分散在CPDB化合物中的任何其他纳米材料的未来挑战和前景,这些材料将通过保留中间相类型而引起介晶范围的增加。可以使用新型可切换设备的外部偏置调制来控制半导体纳米结构的发射极化,这在全新技术的最新趋势中非常有说服力。尤其是,从结合了CdS的弯曲核LC基质形成以及“ ON”和“ OFF”状态的过渡相变体(取决于几何参数)的角度出发,研究了各种中间相在POM的电光响应。 CdS NW的数量。最后,详细探讨了分散在CPDB化合物中的任何其他纳米材料的未来挑战和前景,这些材料将通过保留中间相类型而引起介晶范围的增加。

更新日期:2019-12-11
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