Ternary CuCo2S4 Thiospinel Nanocrystal-Coated Photodiode with Improved Photoresponsivity and Acceptance Angles for Optoelectronic Applications

  • Murat YıldırımEmail author
  • Adem Kocyigit
  • Adem Sarilmaz
  • Sultan Suleyman Ozel
  • Mahmut Kus
  • Faruk OzelEmail author


Ternary-structured thiospinels have attracted great attention in recent years for energy applications due to their attractive characteristics such as simple production, earth-abundant components and non-toxic nature. In this work, copper cobalt sulfide (CuCo2S4 or carrollite) thiospinel nanocrystals were synthesized by a hot-injection method, and detailed electrical and optoelectronic characterizations were performed in a Schottky device. The synthesized nanocrystals were used as an interfacial layer between the Au metal and p-Si semiconductor to obtain an Au/CuCo2S4/p-Si device. The structural and morphological characterizations confirmed the crystallinity, nanostructure and composition of the CuCo2S4 nanocrystals. The IV and CV measurements were employed to characterize the Au/CuCo2S4/p-Si device for various illumination intensities. The obtained device exhibited good rectifying and photodiode properties as well as good photocapacitance. The Au/CuCo2S4/p-Si device can be used and improved for optoelectronic applications.


CuCo2S4 carrollite photodiode optoelectronic properties hot-injection method 


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This work is supported by TUBITAK (The Scientific and Technological Research Council of Turkey) under Project Number 217M212.


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Copyright information

© The Minerals, Metals & Materials Society 2019

Authors and Affiliations

  • Murat Yıldırım
    • 1
    Email author
  • Adem Kocyigit
    • 2
  • Adem Sarilmaz
    • 3
  • Sultan Suleyman Ozel
    • 3
  • Mahmut Kus
    • 4
  • Faruk Ozel
    • 3
    • 5
    Email author
  1. 1.Department of Biotechnology, Faculty of ScienceSelcuk UniversityKonyaTurkey
  2. 2.Department of Electrical Electronics Engineering, Engineering FacultyIgdir UniversityIgdirTurkey
  3. 3.Department of Metallurgical and Materials Engineering, Faculty of EngineeringKaramanoglu Mehmetbey UniversityKaramanTurkey
  4. 4.Department of Chemical Engineering, Faculty of Engineering and Natural SciencesKonya Technical UniversityKonyaTurkey
  5. 5.Scientific and Technological Research and Application CenterKaramanoglu Mehmetbey UniversityKaramanTurkey

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