Characterisation of the interplay between microstructure and opto-electronic properties of Cu(In,Ga)S2solar cells by using correlative CL-EBSD measurements.
cathodoluminescence; chalcopyrite; electron backscatter diffraction; grain boundary; solar cells; Atomic scale; Electron back scatter diffraction; Grain-boundaries; High angle grain boundaries; Optoelectronics property; Radiative recombination; Spectral shift; Structural differences; Bioengineering; Chemistry (all); Materials Science (all); Mechanics of Materials; Mechanical Engineering; Electrical and Electronic Engineering
Abstract :
[en] Cathodoluminescence and electron backscatter diffraction have been applied to exactly the same grain boundaries (GBs) in a Cu(In,Ga)S2solar absorber in order to investigate the influence of microstructure on the radiative recombination behaviour at the GBs. Two different types of GB with different microstructure were analysed in detail: random high angle grain boundaries (RHAGBs) and Σ3 GBs. We found that the radiative recombination at all RHAGBs was inhibited to some extent, whereas at Σ3 GBs three different observations were made: unchanged, hindered, or promoted radiative recombination. These distinct behaviours may be linked to atomic-scale grain boundary structural differences. The majority of GBs also exhibited a small spectral shift of about ±10 meV relative to the local grain interior (GI) and a few of them showed spectral shifts of up to ±40 meV. Red and blue shifts were observed with roughly equal frequency.
Disciplines :
Physics
Author, co-author :
Hu, Yucheng ; Department of Materials Science and Metallurgy, Cambridge University, Cambridge CB3 0FS, United Kingdom
Kusch, Gunnar ; Department of Materials Science and Metallurgy, Cambridge University, Cambridge CB3 0FS, United Kingdom
ADELEYE, Damilola ; University of Luxembourg > Faculty of Science, Technology and Medicine > Department of Physics and Materials Science > Team Susanne SIEBENTRITT
SIEBENTRITT, Susanne ; University of Luxembourg > Faculty of Science, Technology and Medicine (FSTM) > Department of Physics and Materials Science (DPHYMS)
Oliver, Rachel ; Department of Materials Science and Metallurgy, Cambridge University, Cambridge CB3 0FS, United Kingdom
External co-authors :
yes
Language :
English
Title :
Characterisation of the interplay between microstructure and opto-electronic properties of Cu(In,Ga)S2solar cells by using correlative CL-EBSD measurements.
Engineering and Physical Sciences Research Council Fonds National de la Recherche Luxembourg
Funding text :
Cambridge authors would like to acknowledge funding from the EPSRC under EP/V029231/1 and EP/R025193/1. Luxembourg team would like to thank Luxembourgish Fond National de la Recherche (FNR) for funding in the framework of the MASSENA project (Project No. PRIDE 15/10935404), and the as well as the REACH (Project No. INTER/UKRI/20/15050982).
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Hu Y Kusch G Adeleye D Siebentritt S Oliver R 2024 Research Data Supporting ‘Characterisation of the interplay between microstructure and opto-electronic properties of Cu(In,Ga)S2 solar cells by using correlative CL-EBSD measurements’. Apollo — University of Cambridge Repository ( https://doi.org/10.17863/CAM.102000)
