ZnS top layer for enhancement of the crystallinity of CZTS absorber during the annealing

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Pulsed Laser Deposition (PLD) of thin films of Cu2ZnSnS4 (CZTS) has not yet led to solar cells with high efficiency. The reason for the relative low efficiency is discussed and a way to overcome this issue is presented. The present thin film absorbers of CZTS suffer from loss of volatile Zn during the plasma-assisted transfer with PLD. This can be compensated by adding a thin layer of ZnS (∼ 80 nm) on top of the CZTS layer before the annealing. In this work the stack ordering of the two layers CZTS and ZnS is investigated, indicating that the configuration with ZnS on top of a CZTS film gives a better crystalline quality of CZTS after the annealing, as demonstrated by X-ray diffraction and Raman spectroscopy.
Original languageEnglish
Title of host publication2015 IEEE 42nd Photovoltaic Specialists Conference (PVSC)
Number of pages4
Publication date2015
ISBN (Print)978-1-4799-7944-8
Publication statusPublished - 2015
Event42nd IEEE Photovoltaic Specialists Conference - Hyatt Regency, New Orleans, United States
Duration: 14 Jun 201519 Jun 2015
Conference number: 42


Conference42nd IEEE Photovoltaic Specialists Conference
LocationHyatt Regency
Country/TerritoryUnited States
CityNew Orleans
Internet address


  • Aerospace
  • Components, Circuits, Devices and Systems
  • Engineered Materials, Dielectrics and Plasmas
  • Engineering Profession
  • Fields, Waves and Electromagnetics
  • Photonics and Electrooptics
  • Power, Energy and Industry Applications
  • Annealing
  • CZTS
  • earth-abundant materials
  • Films
  • II-VI semiconductor materials
  • kesterite materials
  • Photovoltaic cells
  • photovoltaic solar cells
  • X-ray scattering
  • Zinc compounds


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