TY - JOUR
T1 - Synthesis of type-II CdSe(S)/Fe2O3 core/shell quantum dots
T2 - the effect of shell on the properties of core/shell quantum dots
AU - Mirnajafizadeh, Fatemeh
AU - Wang, Fan
AU - Reece, Peter
AU - Stride, John Arron
PY - 2016/6/1
Y1 - 2016/6/1
N2 - CdSe(S)/Fe2O3 core/shell quantum dots (QDs) were prepared in an aqueous synthetic route. These were shown to be highly crystalline nanoparticles using X-ray diffraction and HRTEM, whilst optical spectroscopy showed that the particles exhibited highly photoluminescent emissions. A red shift in the emission wavelength of CdSe(S) QDs coated with Fe2O3 was observed, despite the crystal structure of the core remaining intact after coating with ferric oxide, indicating a direct influence of the shell on the electronic levels of the QD core. The effects of the shell on the optical properties of core/shell QDs of these type-II CdSe(S)/Fe2O3 QDs are rationalised by comparison to type-I CdSe(S)/ZnO QDs.
AB - CdSe(S)/Fe2O3 core/shell quantum dots (QDs) were prepared in an aqueous synthetic route. These were shown to be highly crystalline nanoparticles using X-ray diffraction and HRTEM, whilst optical spectroscopy showed that the particles exhibited highly photoluminescent emissions. A red shift in the emission wavelength of CdSe(S) QDs coated with Fe2O3 was observed, despite the crystal structure of the core remaining intact after coating with ferric oxide, indicating a direct influence of the shell on the electronic levels of the QD core. The effects of the shell on the optical properties of core/shell QDs of these type-II CdSe(S)/Fe2O3 QDs are rationalised by comparison to type-I CdSe(S)/ZnO QDs.
UR - http://www.scopus.com/inward/record.url?scp=84961207156&partnerID=8YFLogxK
U2 - 10.1007/s10853-016-9828-4
DO - 10.1007/s10853-016-9828-4
M3 - Article
AN - SCOPUS:84961207156
SN - 0022-2461
VL - 51
SP - 5252
EP - 5258
JO - Journal of Materials Science
JF - Journal of Materials Science
IS - 11
ER -