Effect of defects and secondary phases in Cu2ZnSnS4 absorber material on the performance of Zn(O,S) buffered devices
| Autor: | Lutfi Ozyuzer, Ece Meric, Dilara Gokcen Buldu, Fulya Türkoğlu, Fatime Gulsah Akca, H. Koseoglu, Mehtap Ozdemir, Ayten Cantas, Gulnur Aygun, Enver Tarhan |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Tin dioxide Metals and Alloys chemistry.chemical_element 02 engineering and technology Surfaces and Interfaces Zinc 021001 nanoscience & nanotechnology 01 natural sciences Zinc sulfide Copper Cadmium sulfide Surfaces Coatings and Films Electronic Optical and Magnetic Materials chemistry.chemical_compound chemistry Chemical engineering 0103 physical sciences Materials Chemistry CZTS Thin film 0210 nano-technology Tin |
| Zdroj: | Thin Solid Films. 670:6-16 |
| ISSN: | 0040-6090 |
| DOI: | 10.1016/j.tsf.2018.12.001 |
| Popis: | Copper zinc tin sulfide (CZTS) absorber layer attracts so much attention in photovoltaic industry since it contains earth abundant, low cost and non-toxic elements contrary to other chalcogenide based solar cells. In the present work, CZTS absorber layers were prepared following a two-stage process: firstly, a stack of metal precursors (Copper (Cu)/Tin (Sn)/Zinc (Zn)/Copper (Cu)) were deposited on molybdenum (Mo) substrate by magnetron sputtering, then this stack was annealed under S atmosphere inside a tubular furnace. CZTS thin films were investigated using energy dispersive X-ray spectroscopy, X-ray diffraction, scanning electron microscopy and Raman spectroscopy. The effect of sulfurization time and the thickness of top and bottom Cu layer in precursors on the properties of CZTS thin films were investigated. The importance of Cu thickness adjacent to Sn to avoid detrimental phases was addressed. The significance of sulfurization time to restrict the Sn and Zn losses, formation of oxides such as tin dioxide and zinc oxide, and formation of molybdenum disulfide and voids between Mo/CZTS interface was also addressed. Moreover, cadmium sulfide buffer layer, which is conventionally used in CZTS solar cells, is replaced by an environmentally friendly alternative zinc oxysulfide buffer layer. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect