CdSeS/ZnS Kuantum Nokta Katkılı 5CB Nematik Sıvı Kristalinde Optik Bant Aralıklarının İncelenmesi

Year 2018, Volume: 6 Issue: 1, 123 - 130, 31.01.2018

Gülsüm Kocakülah , Kadir Gökşen , Oğuz Köysal

https://doi.org/10.29130/dubited.362037

Abstract

Bu çalışmada, CdSeS/ZnS alaşım
kuantum nokta katkılı 5CB (4-pentyl-4′-cyanobiphenyl) nematik sıvı kristal
yapının optik bant aralığı değerleri incelenmiştir. CdSeS/ZnS alaşım kuantum
nokta, 5CB nematik sıvı kristal yapı içerisine ağırlıkça % 0,05, % 0,1 ve % 0,15
oranlarında katkılanarak optik bant aralığı değerleri elde edilmiştir. Deneysel
sonuçlara göre kuantum nokta katkılanmasıyla optik bant aralığı değerlerinin
azaldığı gözlemlenmiştir. Elde edilen sonuçlar, CdSeS/ZnS alaşım kuantum nokta
yapının sıvı kristal tabanlı cihaz uygulamalarında elektro-optik özellikleri
değiştirebilen alternatif bir malzeme olarak kullanılabileceğini
göstermektedir.

Keywords

Nematik sıvı kristal, Kuantum nokta, Optik bant aralığı

Investigation of Optical Band Gap of CdSeS/ZnS Quantum Dot Doped 5CB Nematic Liquid Crystals

Abstract

In this study, optical band gap values of 5CB (4-pentyl-4 'cyanobiphenyl) nematic liquid crystal structure doped with CdSeS/ZnS alloyed quantum dots are investigated. The CdSeS/ZnS alloyed quantum dot was doped into the 5CB nematic liquid crystal structure at 0.05, 0.1 and 0.15 % wt/wt and optical band gap values were obtained. According to experimental results, optical band gap values decrease with quantum dot doping. The results show that the CdSeS/ZnS alloyed quantum dots can be alternative materials used in liquid crystal based device applications whose electro-optical properties are able to be easily modified.

Keywords

Nematic liquid crystal, Quantum dot, Optical band gap

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