TY - JOUR
T1 - Precursor-Mediated Linear- And Branched-Polytypism Control in CuαZnβSnγSeδColloidal Nanocrystals Using a Dual-Injection Method
AU - Ren, Huan
AU - Li, Zhe
AU - Sun, Yuanwei
AU - Gao, Peng
AU - McCarthy, Conor
AU - Liu, Ning
AU - Xu, Hongxing
AU - Ryan, Kevin M.
N1 - Publisher Copyright:
Copyright © 2020 American Chemical Society.
PY - 2020/9/8
Y1 - 2020/9/8
N2 - Control of polytypism in colloidal nanocrystals allows for a shape evolution from 0D to 3D and also provides an opportunity to tailor physical properties that are crystal phase dependent. Initiating polytypism in nanostructures is a function of multiple different control parameters that dictate nucleation and growth, including reaction temperature, ligands, and precursors. This is further complicated as the number of metal ions increases in progressing from binary to ternary to quaternary compositions. Here, a synthesis method with dual injections is developed to initiate two- and three-dimensional polytypism in the nonstoichiometricαβδCuαZnβSnγSeδ system simply by changing a single commercially available chemical precursor. Synthesis parameters were developed to grow single-crystal wurtzite and zinc-blende forms with a further extension to linear and branched morphologies deriving from nucleation in one phase and growth termination in the other. Photoluminescence measurements were carried out on the particles at a low temperature with emission peaks ranging from ∼1.93 to ∼2.32 eV observed.
AB - Control of polytypism in colloidal nanocrystals allows for a shape evolution from 0D to 3D and also provides an opportunity to tailor physical properties that are crystal phase dependent. Initiating polytypism in nanostructures is a function of multiple different control parameters that dictate nucleation and growth, including reaction temperature, ligands, and precursors. This is further complicated as the number of metal ions increases in progressing from binary to ternary to quaternary compositions. Here, a synthesis method with dual injections is developed to initiate two- and three-dimensional polytypism in the nonstoichiometricαβδCuαZnβSnγSeδ system simply by changing a single commercially available chemical precursor. Synthesis parameters were developed to grow single-crystal wurtzite and zinc-blende forms with a further extension to linear and branched morphologies deriving from nucleation in one phase and growth termination in the other. Photoluminescence measurements were carried out on the particles at a low temperature with emission peaks ranging from ∼1.93 to ∼2.32 eV observed.
UR - http://www.scopus.com/inward/record.url?scp=85092071669&partnerID=8YFLogxK
U2 - 10.1021/acs.chemmater.0c01663
DO - 10.1021/acs.chemmater.0c01663
M3 - Article
AN - SCOPUS:85092071669
SN - 0897-4756
VL - 32
SP - 7254
EP - 7262
JO - Chemistry of Materials
JF - Chemistry of Materials
IS - 17
ER -