Green Synthesis and Evaluation of Electronic and Optical Properties of CdS/CdTe Quantum Dots

Year : 2025 | Volume : 13 | Issue : 02 | Page : 185 194
    By

    Ravindar Adla,

  • Veeraswamy Maragani,

  • Suresh Kumar Danikonda,

  • Bikshamaiah Nampally,

  • Madhuri Dumpala,

  • Madhukar Katakam,

  1. Research Scholar, Department of Physics, Polymer Nanocomposites and Functional Materials Laboratory, University College of Science, Osmania University, Hyderabad, Telangana, India
  2. Research Scholar, Department of Physics, Polymer Nanocomposites and Functional Materials Laboratory, University College of Science, Osmania University, Hyderabad, Telangana, India
  3. Assistant Professor, Department of Physics, University P G College, Satavahana University, Godavarikhani, Telangana, India
  4. Assistant Professor, Department of Physics, University College of Science, Mahatma Gandhi University, Nalgonda, Telangana, India
  5. Assistant Professor, Department of Physics, Polymer Nanocomposites and Functional Materials Laboratory, University College of Science, Osmania University, Hyderabad, Telangana, India
  6. Professor, Department of Physics, Polymer Nanocomposites and Functional Materials Laboratory, University College of Science, Osmania University, Hyderabad, Telangana, India

Abstract

The CdS/CdTe quantum dots (QDs), with altered concentrations of CdS, were synthesized using straightforward precursors through an environmentally friendly green method. The synthesized quantum dots were characterization by UV–visible absorption spectroscopy, Photoluminescence (PL), and Fourier Transform Infrared Spectroscopy (FTIR) to understand their electronic and structural properties. The average particle size is nearly consistent with the values derived from Brus’s formula. The UV–visible spectra show a blueshift compared with pure sample, this could be attributed as quantum size effect on electron and hole. The band gap energy ranges from 2.71 eV to 2.32 eV indicating tunable optical properties. Band gap energy decreases as the size of quantum dots increasing. The band gap energy of system was determined from absorption data, using a Tauc plot, yielding a value of 2.71 eV. The FTIR showed a significant vibrational peak near 732 cm-1, indicating the presence of the Te-O and carbonyl group C=O. The estimated band gap of CdS/CdTe based quantum dots, determined through Tauc plot analysis, is 2.59 eV. The PL emission peak range from 500-650 nm show size dependent of optical properties. The PL spectra show a strong and narrow emission peak, indicating high quantum efficiency. The preset work is aimed to enhance the characteristics of CdTe/CdS properties suitable for energy conversion and to further stimulate interest, as the emission of CdS/CdTe QDs exhibits peaks positioned at 608 nm, attributed to the presence of cadmium ions vacancies align qualitatively

Keywords: CdS/CdTe, Quantum dots, UV-Vis, Photoluminescence, FTIR, band gap energy

[This article belongs to Journal of Polymer and Composites ]

aWQ6MjA1MjczfGZpbGVuYW1lOmVlYWZhMDJhLWZpLXBuZy53ZWJwfHNpemU6dGh1bWJuYWls
How to cite this article:
Ravindar Adla, Veeraswamy Maragani, Suresh Kumar Danikonda, Bikshamaiah Nampally, Madhuri Dumpala, Madhukar Katakam. Green Synthesis and Evaluation of Electronic and Optical Properties of CdS/CdTe Quantum Dots. Journal of Polymer and Composites. 2025; 13(02):185-194.
How to cite this URL:
Ravindar Adla, Veeraswamy Maragani, Suresh Kumar Danikonda, Bikshamaiah Nampally, Madhuri Dumpala, Madhukar Katakam. Green Synthesis and Evaluation of Electronic and Optical Properties of CdS/CdTe Quantum Dots. Journal of Polymer and Composites. 2025; 13(02):185-194. Available from: https://journals.stmjournals.com/jopc/article=2025/view=205289


Browse Figures

References

  1. Maghouli M, Eshghi H. Studying the effect of deposition time on physical properties of CdTe thin films; Influence of CdTe electrical properties on CdS/CdTe heterojunction rectifying behavior. Optik (Stuttg). 2020 Sep;218:165132.
  2. Kudii D, Meriuts A, Khrypunova A, Shelest T, Varvianska V, Zaitsev R. Theoretical Analysis of Optical Properties of CdS/CdTe Film Heterosystems. In: 2020 IEEE 4th International Conference on Intelligent Energy and Power Systems (IEPS). IEEE; 2020. p. 135–9.
  3. Ahmed M, Bakry A, Shaaban ER, Dalir H. Structural, electrical, and optical properties of ITO thin films and their influence on performance of CdS/CdTe thin-film solar cells. Journal of Materials Science: Materials in Electronics. 2021 Apr 1;32(8):11107–18.
  4. Sofia JR, Wilson KSJ. Investigations on Integration of CdS/CdTe Thin Film Solar Cell with Supercapacitor. Applied Solar Energy. 2024 Apr 26;60(2):215–25.
  5. Surucu O, Surucu G, Gasanly NM, Parlak M, Isik M. Exploring Temperature-Dependent bandgap and Urbach energies in CdTe thin films for optoelectronic applications. Mater Lett. 2024 Oct;373:137078.
  6. Fadhil EAA, Abdullah MM, Lafta FM. Preparation of N-A Cysteine-capped CdTe/CdS/ZnS core/shell/shell QDs as a Selective Probe for Detecting Damaged DNA. Int J Nanosci. 2024 Apr 29;23(02).
  7. Candelas-Urrea VA, Villa-Angulo C, Hernández-Fuentes IO, Morales-Carbajal R, Villa-Angulo R. All-Layer Electrodeposition of a CdTe/Hg0.1Cd0.9Te/CdTe Photodetector for Short- and Mid-Wavelength Infrared Detection. Coatings. 2024 Sep 3;14(9):1133.
  8. Das NK, Farhad SFU, Gupta AK Sen, Ahamed EMKI, Matin MA, Amin N. The significance of bilayer window (CdS:O/CdS) on the performance of CdTe thin film solar cells. Opt Mater (Amst). 2024 Sep;155:115816.
  9. Arafat I, Talukder Udoy AA, Das NK. Enhancing Efficiency and Stability of CdTe-Based Solar Cells: A Simulation-Based Approach for Sustainable Energy Generation. In: 2024 6th International Conference on Electrical Engineering and Information & Communication Technology (ICEEICT). IEEE; 2024. p. 1107–11.
  10. Yılmaz S, Başol BM, Polat İ, Küçükömeroğlu T, Bacaksız E. Fabrication and characterization of self-powered SnO2/CdTe1-xSex/CdTe photodetectors. Journal of Materials Science: Materials in Electronics. 2024 Dec 17;35(36):2300.
  11. Verma L, Khare A. Photovoltaic applications of electrodeposited CdTe films: impact of deposition time. Emergent Mater. 2024 Oct 7;7(5):2065–78.
  12. Zhang X, Yang X, Zheng Y, Tai Y, Zhang J, Li B, et al. Study on the Bifacial Ultrathin CdTe Solar Cell With ZnTe:N/IWO Composite Transparent Back Electrode. IEEE J Photovolt. 2025 Jan;15(1):40–5.
  13. Salve M V., Ukarande AS, Olusola OI, Bandara TMWJ, Furlani M, Mellander BE, et al. Highly Crystalline and Stoichiometric Growth of CdTe by Cost-Effective Hydrothermal Technique. J Electron Mater. 2024 Apr 2;53(4):1913–22.
  14. Abdalaah YK, Mahmood OA, Shaker SS, Ismail RA. Preparation of a nanostructured CdTe@CdS core–shell/Si photodetector by two-step laser ablation in liquid. Journal of Optics. 2024 Mar 27;
  15. S. Nath et al., “Green synthesis of CdS/CdTe quantum dots using sol-gel method,” Journal of Nanoparticle Research, vol. 14, no. 10, pp. 1-9, 2012.
  16. Zhang et al., “Hydrothermal synthesis of CdS/CdTe quantum dots with tunable optical properties,” Journal of Alloys and Compounds, vol. 509, no. 2, pp. 542-548, 2011.
  17. K. Singh et al., “Microbial synthesis of CdS/CdTe quantum dots with enhanced optical properties,” Journal of Biotechnology, vol. 157, no. 3, pp. 434-441, 2012.
  18. K. Mehta et al., “Plant-mediated synthesis of CdS/CdTe quantum dots with tunable optical properties,” Journal of Nanoparticle Research, vol. 15, no. 11, pp. 1-12, 2013.
  19. Liu et al., “Sol-gel synthesis of CdS/CdTe quantum dots with enhanced optical properties,” Journal of Sol-Gel Science and Technology, vol. 64, no. 2, pp. 341-348, 2012.
  20. Wang et al., “Hydrothermal synthesis of CdS/CdTe quantum dots with tunable optical properties,” Journal of Alloys and Compounds, vol. 576, pp. 241-246, 2013.
  21. K. Singh et al., “Microbial synthesis of CdS/CdTe quantum dots with enhanced optical properties,” Journal of Biotechnology, vol. 179, pp. 34-41, 2014.
  22. Aliyu MM. Assessing the effects and impacts of the CdSTe interlayer in the performance of the CdTe-CdS thin film solar cells through simulations. Science World Journal. 2024 May 2;19(1):240–4.
  23. Hafaifa L, Maache M, Allam Z, Zebeir A. Simulation and performance analysis of CdTe thin film solar cell using different Cd-free zinc chalcogenide-based buffer layers. Results in Optics. 2024 Feb;14:100596.
  24. Daouda, Tchangnwa Nya F, Dzifack Kenfack GM, Laref A, Mohamadou A. Multilayers strategy with a mixed CdTe/ZnTe absorber layer for optical trapping and efficiency improvement in CdTe-based solar – SCAPS modelling. Phys Scr. 2024 May 1;99(5):055964.
  25. Krishnaiah VVJR, Prakash VNVS, Chandra GR, Sirisha PGK, Mohan KJ, Rejeti VKK, et al. Optimizing ZnO/CdS/CdTe bilayer structures for enhanced CdTe solar cell efficiency: A machine learning approach. MRS Adv. 2024 Jan 30;9(9):640–5.
  26. Dissanayake MAKL, Paramanathan K, Senadeera GKR, Thotawattage CA, Balashangar K, Ravirajan P, et al. Optical transmission and photoconductivity of chemical bath-deposited CdS thin films for optoelectronic applications. Thin Solid Films. 2024 Feb;791:140225.
  27. Vandana L, Ahmad G, Mallik S. Enhancement of photon absorption in thin film CdTe solar cell with microtextured quartz substrate. Mater Today Proc. 2024 Jul;
  28. Kamalian M, Hasani E, Babazadeh Habashi L, Gholizadeh Arashti M. Impact of post-deposition annealing on the optical, electrical, and structural properties of CdS thin films for solar cell applications. Physica B Condens Matter. 2024 Feb;674:415524.
  29. Camacho-Espinosa E, Mis-Fernández R, Loeza-Poot M, Bartolo-Pérez P, Peña JL. Band gap analysis for nanometric sputtered CdTe and CdS films. Materials Science and Engineering: B. 2024 May;303:117281.
  30. Bagheri R, Kafashan H. Structural and optical properties of In-doped CdS nanostructures: A comprehensive study. Ceram Int. 2024 Oct;50(19):37041–56.
  31. Kumari S, Chasta G, Suthar D, Himanshu, Kumari N, Dhaka MS. Understanding grain growth and Grain Boundary Inversion in CdS Thin Films by CdI2 Activation. Thin Solid Films. 2024 Dec;140593.
  32. Yimamu AU, Werta SZ, Maremi FT, Dejene BF, Echendu OK. Effect of deposition voltage on the physico-chemical properties of electrodeposited Mg-doped CdS thin films for Opto-electronic application. Mater Today Commun. 2025 Jan;42:111410.
  33. Aditi Priyadarshini, Kumar Nikhil, R.K. Mishra, K. P. Tiwary. Photovoltaic Cell Prepared from Nanoparticles of CdS/CdTe on ITO Substrate and its Characterization. International Research Journal on Advanced Engineering Hub (IRJAEH). 2024 May 24;2(05):1452–7.
  34. Wijesingha JR, Gajanayake GKUP, Wickramasinghe WAVU, Damayanthi RMT, De Silva GIP, De Silva DSM. Introducing Spin-coated ZnO Anti-reflection Coating for CdS/CdTe Solar Cells. J Electron Mater. 2024 Sep 2;53(9):5298–305.
  35. Jena I, Singh UP. Effect of cadmium chloride treatment on CdS buffer layer and its impact on growth of CdTe layer: An experimental and numerical studies. Physica B Condens Matter. 2024 Apr;678:415746.
  36. Prateek, Aditi Priyadarshini, Kumar Nikhil, S K Choubey, K P Tiwary, Rajeev Ranjan. Study of Fabrication Process and Performance Analysis of the CDS/CDTE Based Photovoltaic Cell. International Research Journal on Advanced Engineering Hub (IRJAEH). 2024 May 23;2(05):1421–6.
  37. Melchor-Robles JA, Nieto-Zepeda KE, Vázquez-Barragán NE, Arreguín-Campos M, Rodríguez-Rosales K, Cruz-Gómez J, et al. Characterization of CdS/CdTe Ultrathin-Film Solar Cells with Different CdS Thin-Film Thicknesses Obtained by RF Sputtering. Coatings. 2024 Apr 9;14(4):452.
  38. Bhattarai S, Jrai AA, K P, Kaur J, Hamid JA, Dakua PK, et al. Assessment of double CdS/CdTe based solar cells using carbon as back contact: an exclusive optimization method. Journal of Optics. 2024 Dec 13;
  39. Loeza-Poot M, Mis-Fernández R, Camacho-Espinosa E, Peña JL. Physico-chemical analysis of the properties and stability of CdS and CdS:O to be applied in thin-film solar cells. Appl Surf Sci. 2024 Jul;662:160125.
  40. Jena I, Singh UP. Optimizing electrical properties and efficiency of copper-doped CdS and CdTe solar cells through advanced ETL and HTL integration: a comprehensive experimental and numerical study. International Journal of Materials Research. 2024 Dec 4;
Regular Issue Subscription Review Article
Volume 13
Issue 02
Received 06/01/2025
Accepted 17/02/2025
Published 25/03/2025
Publication Time 78 Days
278

Login


My IP

PlumX Metrics