Journals / Düzce Üniversitesi Bilim ve Teknoloji Dergisi / 2018 / Cilt: 6 - Sayı: 1

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

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

Pages
123–130
Publication Date
2022-10-12
DOI
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

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.

📌 3 Key Takeaways

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Objective & Hypothesis: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.
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Key Findings & Data: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.
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Conclusion & Impact: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.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Nematik sıvı kristal · Kuantum nokta · Optik bant aralığı

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.

Özet

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.

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Cite This Article

GÖKŞEN, K., KOCAKÜLAH, G., KÖYSAL, O. (2022). Investigation of Optical Band Gap of CdSeS/ZnS Quantum Dot Doped 5CB Nematic Liquid Crystals. Düzce Üniversitesi Bilim ve Teknoloji Dergisi, Cilt: 6 - Sayı: 1, 123–130. https://ajindex.com/articles/494572

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References (12)

  1. J. Mirzaei, M. Reznikov, T. Hegmann “Quantum Dots As Liquid Crystal Dopants,” Journal of Materials Chemistry, vol. 22, no. 42, pp. 22350-22365, 2012
  2. A. Kumar, A. M. Biradar, “Effect of Cadmium Telluride Quantum Dots on The Dielectric And Electro-Optical Properties Of Ferroelectric Liquid Crystals,” Physical Review E, vol. 83, no. 4, pp. 041708, 2011
  3. P. K. Tripathi, A. Misra, K. Pandey and R. Manohar, “Study on dielectric and optical properties of ZnO doped nematic liquid crystal in low frequency region,” Chem. Commun, vol. 1, pp. 20-26, 2013
  4. E. A. Konshina, I. F. Galin and E. O. Gavrish, “Reversible capacitance change of nematic liquid crystal cell doped with semiconductor CdSe/ZnS quantum dots,” Universal Journal of Materials Science, vol. 2, no. 1, pp. 1-4, 2014
  5. P. Reiss, M. Protiere and L. Li, “Core/shell semiconductor nanocrystals,” small, vol. 5, no. 2, pp. 154-168, 2009
  6. I. Mora-Sero, S. Giménez, F. Fabregat-Santiago, R. Gómez, Q. Shen, T. Toyoda and J. Bisquert, “Recombination in quantum dot sensitized solar cells,” Accounts of chemical research, vol. 42, no. 11, pp. 1848-1857, 2009
  7. A. J. Nozik, M. C. Beard, J. M. Luther, M. Law, R. J. Ellingson, J. C. Johnson, “Semiconductor quantum dots and quantum dot arrays and applications of multiple exciton generation to third-generation photovoltaic solar cells, “Chemical reviews, vol. 110, no. 11, pp. 6873-6890, 2010
  8. B. A. Kairdolf, A. M. Smith, T. H. Stokes, M. D. Wang, A. N. Young and S. Nie, “Semiconductor quantum dots for bioimaging and biodiagnostic applications,” Annual Review of Analytical Chemistry, vol. 6, pp. 143-162, 2013
  9. O. Köysal, “Azo boya ve fulleren (C60) katkılı nematik sıvı kristallerin elektro-optik özelliklerinin incelenmesi,” Doktora tezi, Fizik Bölümü, Gebze Yüksek Teknoloji Enstitüsü, Kocaeli, Türkiye, 2007
  10. G. Pathak, S. Pandey, R. Katiyar, A. Srivastava, R. Dabrowski, K. Garbat, R. Manohar “Analysis of photoluminescence, UV absorbance, optical band gap and threshold voltage of TiO 2 nanoparticles dispersed in high birefringence nematic liquid crystal towards its application in display and photovoltaic devices,” Journal of Luminescence
  11. M. Mishra, R. S. Dabrowski, R. Dhar, “Thermodynamical, optical, electrical and electro-optical studies of a room temperature nematic liquid crystal 4-pentyl-4′-cyanobiphenyl dispersed with barium titanate nanoparticles” Journal of Molecular Liquids, vol. 213, pp. 247-254, 2016
  12. P. R. Supreet, S