Conference paper
ZnS top layer for enhancement of the crystallinity of CZTS absorber during the annealing
Department of Photonics Engineering, Technical University of Denmark1
Optical Microsensors and Micromaterials, Department of Photonics Engineering, Technical University of Denmark2
Department of Micro- and Nanotechnology, Technical University of Denmark3
Silicon Microtechnology, Department of Micro- and Nanotechnology, Technical University of Denmark4
Risø National Laboratory for Sustainable Energy, Technical University of Denmark5
Department of Physics, Technical University of Denmark6
Surface Physics and Catalysis, Department of Physics, Technical University of Denmark7
Department of Energy Conversion and Storage, Technical University of Denmark8
Electrofunctional materials, Department of Energy Conversion and Storage, Technical University of Denmark9
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.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2015 |
| Pages: | 1-4 |
| Proceedings: | 42nd IEEE Photovoltaic Specialists Conference |
| ISBN: | 1479979430 , 1479979449 , 1479979457 , 9781479979431 , 9781479979448 and 9781479979455 |
| Types: | Conference paper |
| DOI: | 10.1109/PVSC.2015.7355905 |
| ORCIDs: | Crovetto, Andrea , Ettlinger, Rebecca Bolt , Canulescu, Stela , Hansen, Ole , Pryds, Nini and Schou, Jørgen |
Aerospace Annealing CZTS Components, Circuits, Devices and Systems Engineered Materials, Dielectrics and Plasmas Engineering Profession Fields, Waves and Electromagnetics Films II-VI semiconductor materials Photonics and Electrooptics Photovoltaic cells Power, Energy and Industry Applications SDG 7 - Affordable and Clean Energy X-ray scattering Zinc compounds earth-abundant materials kesterite materials photovoltaic solar cells
