TY - GEN
T1 - Emission diversity of ZnO nanocrystals with different growth temperatures
AU - Lozada, E. Velázquez
AU - Torchynska, T.
AU - González, G. Camacho
N1 - Publisher Copyright:
© 2014 Materials Research Society.
PY - 2014
Y1 - 2014
N2 - Scanning electronic microscopy (SEM), X ray diffraction (XRD) and photoluminescence (PL) have been applied to the study of structural and optical properties of ZnO nanocrystals prepared by the ultrasonic spray pyrolysis (USP) at different temperatures. The variation of temperatures and times at the growth of ZnO films permits modifying the ZnO phase from the amorphous to crystalline, to change the size of ZnO nanocrystals (NCs), as well as to vary their photoluminescence spectra. The study has revealed three types of PL bands in ZnO NCs: defect related emission, the near-band-edge (NBE) PL, related to the LO phonon replica of free exciton (FE) recombination, and its second-order diffraction peaks. The PL bands, related to the LO phonon replica of FE, and its second-order diffraction in the room temperature PI spectrum testify on the high quality of ZnO films prepared by the USP technology.
AB - Scanning electronic microscopy (SEM), X ray diffraction (XRD) and photoluminescence (PL) have been applied to the study of structural and optical properties of ZnO nanocrystals prepared by the ultrasonic spray pyrolysis (USP) at different temperatures. The variation of temperatures and times at the growth of ZnO films permits modifying the ZnO phase from the amorphous to crystalline, to change the size of ZnO nanocrystals (NCs), as well as to vary their photoluminescence spectra. The study has revealed three types of PL bands in ZnO NCs: defect related emission, the near-band-edge (NBE) PL, related to the LO phonon replica of free exciton (FE) recombination, and its second-order diffraction peaks. The PL bands, related to the LO phonon replica of FE, and its second-order diffraction in the room temperature PI spectrum testify on the high quality of ZnO films prepared by the USP technology.
UR - http://www.scopus.com/inward/record.url?scp=84922442253&partnerID=8YFLogxK
U2 - 10.1557/opl.2014.837
DO - 10.1557/opl.2014.837
M3 - Contribución a la conferencia
AN - SCOPUS:84922442253
T3 - Materials Research Society Symposium Proceedings
SP - 45
EP - 51
BT - Synthesis, Characterization, and Applications of Functional Materials - Thin Films and Nanostructures
A2 - Jia, Quanxi
A2 - Kumar, Dhananjay
A2 - Obradors, Xavier
A2 - Singh, Kaushal K.
A2 - Craciun, Valentin
A2 - Guilloux-Viry, Maryline
A2 - Jain, Menka
A2 - Kozuka, Hiromitsu
A2 - Mathur, Sanjay
PB - Materials Research Society
T2 - 2014 MRS Spring Meeting
Y2 - 21 April 2014 through 25 April 2014
ER -