TY  - JOUR
AU  - Xi, Lifei
AU  - Cho, Deok-Yong
AU  - Besmehn, Astrid
AU  - Duchamp, Martial
AU  - Grützmacher, Detlev
AU  - Lam, Yeng Ming
AU  - Kardynał, Beata E.
TI  - Effect of Zinc Incorporation on the Performance of Red Light Emitting InP Core Nanocrystals
JO  - Inorganic chemistry
VL  - 55
IS  - 17
SN  - 1520-510X
CY  - Washington, DC
PB  - American Chemical Society
M1  - FZJ-2016-07914
SP  - 8381 - 8386
PY  - 2016
AB  - This report presents a systematic study on the effect of zinc (Zn) carboxylate precursor on the structural and optical properties of red light emitting InP nanocrystals (NCs). NC cores were assessed using X-ray photoelectron spectroscopy (XPS), X-ray absorption spectroscopy (XAS), energy-dispersive X-ray spectroscopy (EDX), and high-resolution transmission electron microscopy (HRTEM). When moderate Zn:In ratios in the reaction pot were used, the incorporation of Zn in InP was insufficient to change the crystal structure or band gap of the NCs, but photoluminescence quantum yield (PLQY) increased dramatically compared with pure InP NCs. Zn was found to incorporate mostly in the phosphate layer on the NCs. PL, PLQY, and time-resolved PL (TRPL) show that Zn carboxylates added to the precursors during NC cores facilitate the synthesis of high-quality InP NCs by suppressing nonradiative and sub-band-gap recombination, and the effect is visible also after a ZnS shell is grown on the cores.
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000382713900024
C6  - pmid:27551948
DO  - DOI:10.1021/acs.inorgchem.6b00747
UR  - https://juser.fz-juelich.de/record/825451
ER  -