TY  - JOUR
AU  - Zamani, Reza R.
AU  - Ibáñez, Maria
AU  - Luysberg, Martina
AU  - García-Castelló, Nuria
AU  - Houben, Lothar
AU  - Prades, Joan Daniel
AU  - Grillo, Vincenzo
AU  - Dunin-Borkowski, Rafal
AU  - Morante, Joan Ramón
AU  - Cabot, Andreu
AU  - Arbiol, Jordi
TI  - Polarity-Driven Polytypic Branching in Cu-Based Quaternary Chalcogenide Nanostructures
JO  - ACS nano
VL  - 8
IS  - 3
SN  - 1936-086X
CY  - Washington, DC
PB  - Soc.
M1  - FZJ-2015-02606
SP  - 2290 - 2301
PY  - 2014
AB  - An appropriate way of realizing property nanoengineering in complex quaternary chalcogenide nanocrystals is presented for Cu2CdxSnSey(CCTSe) polypods. The pivotal role of the polarity in determining morphology, growth, and the polytypic branching mechanism is demonstrated. Polarity is considered to be responsible for the formation of an initial seed that takes the form of a tetrahedron with four cation-polar facets. Size and shape confinement of the intermediate pentatetrahedral seed is also attributed to polarity, as their external facets are anion-polar. The final polypod extensions also branch out as a result of a cation-polarity-driven mechanism. Aberration-corrected scanning transmission electron microscopy is used to identify stannite cation ordering, while ab initio studies are used to show the influence of cation ordering/distortion, stoichiometry, and polytypic structural change on the electronic band structure.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000333539400043
C6  - pmid:24575876
DO  - DOI:10.1021/nn405747h
UR  - https://juser.fz-juelich.de/record/189439
ER  -