scholarly journals Photoluminescence Emission and Structure Study in ZnO:Ag nanorods

2015 ◽  
Vol 5 (01) ◽  
pp. 55
Author(s):  
Erick Velázquez Lozada ◽  
G M Camacho-González ◽  
J M Quino-Cerdan
Keyword(s):  
Optical Properties ◽  
Ultrasonic Spray Pyrolysis ◽  
Structure Study ◽  
Zno Films ◽  
Photoluminescence Spectra ◽  
Scanning Electronic Microscopy ◽  
Electronic Microscopy ◽  
Structural And Optical Properties ◽  
Ultrasonic Spray ◽  
Different Temperatures

<p>Scanning electronic microscopy (SEM) andX ray diffraction (XRD) have been applied to the study of structural and optical properties of ZnOnanocrystals 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 ZnOnanocrystals (NCs), as well as to vary their photoluminescence spectra. </p>

Structural and optical properties of Zn1-xMgxO thin films deposited by ultrasonic spray pyrolysis

2005 ◽  
Vol 492 (1-2) ◽  
pp. 248-252 ◽  
Author(s):  
Xia Zhang ◽  
Xiao Min Li ◽  
Tong Lai Chen ◽  
Ji Ming Bian ◽  
Can Yun Zhang
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Spray Pyrolysis ◽  
Ultrasonic Spray Pyrolysis ◽  
Structural And Optical Properties ◽  
Ultrasonic Spray

Emission Diversity of ZnO Nanocrystals with Different Growth Temperatures

2014 ◽  
Vol 1675 ◽  
pp. 45-51
Author(s):  
E. Velázquez Lozada ◽  
T. Torchynska ◽  
G. Camacho González
Keyword(s):  
Free Exciton ◽  
Ultrasonic Spray Pyrolysis ◽  
Second Order ◽  
Zno Films ◽  
Near Band Edge ◽  
Phonon Replica ◽  
Ultrasonic Spray ◽  
Zno Nanocrystals ◽  
Order Diffraction ◽  
Different Temperatures

ABSTRACTScanning 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 Pl spectrum testify on the high quality of ZnO films prepared by the USP technology.

Study on the growth and optical properties of ZnO thin films fabricated by ultrasonic spray pyrolysis

2018 ◽  
Vol 32 (29) ◽  
pp. 1850351 ◽  
Author(s):  
Weiguang Yang ◽  
Zhen Yang ◽  
Ding Li ◽  
Xiaoying Zhang ◽  
Ziliang Zhou ◽  
...  
Keyword(s):  
Thin Films ◽  
Optical Properties ◽  
Spray Pyrolysis ◽  
Quartz Substrate ◽  
Ultrasonic Spray Pyrolysis ◽  
Zno Thin Films ◽  
Zno Films ◽  
Expansion Formula ◽  
Ultrasonic Spray ◽  
Structure Formula

In this paper, ZnO nanofilms are prepared on quartz substrate by ultrasonic spray pyrolysis (USP) technology. The effects of substrate temperature and deposition time on the micro-structural, morphological and optical properties of ZnO thin films are investigated in detail. Measurements indicate that the growth process of the film is as follows: Micro grains accumulation [Formula: see text] grains’ expansion [Formula: see text] grow into certain nanostructures under different temperature. Nanostructures of the film are as follows: Irregular broken hexagonal-like structure ([Formula: see text]C); coexisting of broken hexagonal- and sheet-like structure (450–500[Formula: see text]C); regular closed packed sheets-like structure ([Formula: see text]C). In addition, all results show that RMS roughness of the films is less than 20 nm. Moreover, the visible transmittance of these samples is higher than 90%. Which display that ZnO films with low roughness and excellent optical properties can be also fabricated by low-cost USP method.

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