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<p>Recent improvements in copper telluride and copper chalcogenide thin films have attracted substantial interest due to their potential credit for opto-electronic and thermoelectric applications. In this work, the structural and morphological evolution of copper–zinc–telluride-Indium (Cu–Zn–Te-In) thin-film is explored through combined experimental and theoretical approaches. In addition, phase engineering of copper telluride-based nanostructured thinfilm is shown to be critical when used as back contacts in Cu–Zn–Te-In dye-sensitised solar cells (DSSCs). Using a co-evaporation technique followed by rapid thermal processing, the Cu/Zn/Te/In ratio is precisely adjusted to achieve single-phase Cu–Zn–Te-In thin films. The as-deposited films are primarily slightly amorphous but transform into crystalline single or mixed phases upon annealing. Such controlled phase evolution is vital for enhancing the efficiency of Cu–Zn–Te-In based solar devices and for improved thermoelectric applications. Sample 1 (Cu<sub>0.59</sub>Zn<sub>0.33</sub>Te<sub>0.07</sub>In<sub>0.01</sub>) is 12% improved over the sample 2 (Cu<sub>0.65</sub>Zn<sub>0.30</sub>Te<sub>0.04</sub>In<sub>0.01</sub>) respectively in Figure of merit emphasizes only the core contributions of this work, including compositional regulation (Cu–Zn–Te-In ratio), structural and morphological evolution, optical band-gap tuning, and key Photo voltaic performance parameters of the optimized device and Seebeck effect too.</p>

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Electron beam evaporated Cu–Zn–Te-In chalcogenide-based thin films for dye-sensitized solar cell and thermoelectric applications

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年6月29日

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  • M. Amutha,
  • K. SenthilKannan,
  • Maria P. Nikolova,
  • R. Hariharasuthan,
  • A. Ayeshamariam,
  • M. Ismail Fathima,
  • S. Beer Mohamed,
  • M. Paramasivam

摘要

Recent improvements in copper telluride and copper chalcogenide thin films have attracted substantial interest due to their potential credit for opto-electronic and thermoelectric applications. In this work, the structural and morphological evolution of copper–zinc–telluride-Indium (Cu–Zn–Te-In) thin-film is explored through combined experimental and theoretical approaches. In addition, phase engineering of copper telluride-based nanostructured thinfilm is shown to be critical when used as back contacts in Cu–Zn–Te-In dye-sensitised solar cells (DSSCs). Using a co-evaporation technique followed by rapid thermal processing, the Cu/Zn/Te/In ratio is precisely adjusted to achieve single-phase Cu–Zn–Te-In thin films. The as-deposited films are primarily slightly amorphous but transform into crystalline single or mixed phases upon annealing. Such controlled phase evolution is vital for enhancing the efficiency of Cu–Zn–Te-In based solar devices and for improved thermoelectric applications. Sample 1 (Cu0.59Zn0.33Te0.07In0.01) is 12% improved over the sample 2 (Cu0.65Zn0.30Te0.04In0.01) respectively in Figure of merit emphasizes only the core contributions of this work, including compositional regulation (Cu–Zn–Te-In ratio), structural and morphological evolution, optical band-gap tuning, and key Photo voltaic performance parameters of the optimized device and Seebeck effect too.