Dissertation / PhD Thesis

PUBDB-2021-04647

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Local atomic structure of kesterite type materials

Konrad, R. (Corresponding author) ; Schnohr, C. (Thesis advisor)Extern* ; Grossberg, M. (Thesis advisor)

2021
Leipzig

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Please use a persistent id in citations: urn:nbn:de:bsz:15-qucosa2-764570  doi:10.3204/PUBDB-2021-04647

Abstract: Kesterite type materials are researched for their ability to form thin film solar cell absorbers from earth abundant and non-toxic elements. Main routes to increase their efficiencies to the level of competing materials include compositional variations such as deviations from stoichiometry and alloying. While the long range structural impacts of these methods are well known, similarities with chalcopyrites indicate that the local atomic structure will not change on the same order of magnitude. This thesis hence employs low temperature Extended X-ray Absorption Fine Structure spectroscopy (EXAFS) measurements on off-stoichiometric or alloyed powder samples and thin films, to reveal the small changes in local atomic environments. It is shown that kesterites tend to keep many aspects of their local atomic structure despite major compositional changes. Yet, both the impact of these small changes on band gap energy as well as further value of probing the local atomic structure of kesterite thin films are demonstrated.

Note: Dissertation, University of Leipzig, 2021

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Contributing Institute(s):

1. DOOR-User (DOOR ; HAS-User)

Research Program(s):

1. 6G3 - PETRA III (DESY) (POF4-6G3) (POF4-6G3)
2. FS-Proposal: I-20170076 (I-20170076) (I-20170076)
3. FS-Proposal: I-20160075 (I-20160075) (I-20160075)

Experiment(s):

1. PETRA Beamline P65 (PETRA III)

Appears in the scientific report 2021

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Database coverage:
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