Crystal structure of Cu2Zn(Sn1-xGex)Se4 solid solution.

PID

Cu2ZnGeSe4 and Cu2ZnSnSe4 are quaternary semiconductors belonging to the adamantine compound family, contain only abundant elements, which makes these materials promising candidates for engineering on their base of different high-efficient and low-cost photovoltaic devices. CZTSSe solar cells with Ge alloying recently reached efficiency of 8.4%. By neutron powder diffraction our group could show that Cu2ZnSnSe4 and Cu2ZnGeSe4 occur in the kesterite and modified kesterite structure respectively. Moreover intrinsic point defects, like copper vacancies and Cu-Zn anti-sites, have been verified. Because these defects have a critical influence on the electronic properties of the material, detailed knowledge on point defect type and concentration is crucial. The aim of the experiment is to get correlated information about changes in lattice parameters and cation site occupancies of Cu2Zn(Sn1-xGex)Se4 over the whole range of x from 0 to 1.

Identifier
PID https://hdl.handle.net/21.11151/5hqk-frfl
Related Identifier IsCompiledBy https://doi.org/10.5442/NI000002
Metadata Access https://data.helmholtz-berlin.de/oaipmh/request?verb=GetRecord&metadataPrefix=oai_datacite&identifier=oai:data.helmholtz-berlin.de:inv/3661
Provenance
Instrument E9 - Fine Resolution Powder Diffractometer (FIREPOD),
Publisher Helmholtz-Zentrum Berlin für Materialien und Energie
Contributor Gurieva, Galina; Helmholtz-Zentrum Berlin für Materialien und Energie
Publication Year 2021
Rights Creative Commons Zero v1.0 Universal; https://creativecommons.org/publicdomain/zero/1.0/
OpenAccess true
Representation
Resource Type Investigation; Collection
Size 44.02 MiB
Discipline Other
Temporal Coverage Begin 2016-04-16T06:00:00Z
Temporal Coverage End 2016-07-26T08:11:00Z