Effect of polyvinylpyrrolidone on the formation of perovskite phase and rosette-like structure in sol-gel–derived PLZT films

2007 ◽  
Vol 22 (8) ◽  
pp. 2195-2203 ◽  
Author(s):  
Z.H. Du ◽  
T.S. Zhang ◽  
J. Ma

Poly-vinylpyrrolidones (PVP) with different molecular weights were used to modify the sol-gel solutions for preparing Pb0.91La0.09(Zr0.65,Ti0.35)0.9775O3 (PLZT, 9/65/35) thin films. The crystallization behavior and microstructural development of the PLZT films with and without PVP addition were investigated. It was found that the addition of PVP significantly improved perovskite phase formation of the PLZT films, but the films exhibited rosette-like morphology. Further study on the PLZT films and the gel particles showed that a premature nucleation of PbO grains in the PVP modified sol-gel solution induced the Pb-rich domains in the films, which accelerated the growth of the grains and thus led to the rosette-like structure. In addition, the electrical and optical properties of the PLZT films with rosette-like structure were also studied and discussed.

2014 ◽  
Vol 23 (4) ◽  
pp. 047805 ◽  
Author(s):  
Meng-Meng Cao ◽  
Xiao-Ru Zhao ◽  
Li-Bing Duan ◽  
Jin-Ru Liu ◽  
Meng-Meng Guan ◽  
...  

2014 ◽  
Vol 70 (3) ◽  
pp. 500-505 ◽  
Author(s):  
C. J. Diliegros-Godines ◽  
R. Castanedo-Pérez ◽  
G. Torres-Delgado ◽  
O. Zelaya-Ángel

2021 ◽  
Vol 21 (3) ◽  
pp. 1971-1977
Author(s):  
Jihye Kang ◽  
Dongsu Park ◽  
Donghun Lee ◽  
Masao Kamiko ◽  
Sung-Jin Kim ◽  
...  

In this research, alternative deposition process of ZnO-based thin films have been studied for transparent conducting oxide (TCO) application. To improve the electrical and optical properties of transparent oxide thin films, alternatively stacked Al-doped ZnO and In-doped ZnO thin films were investigated. Multilayer structure of alternative 6 layers of thin films were prepared in this research. Especially, Aluminum and Indium were chosen as dopant materials. Thin films of Al-doped ZnO (AZO) and In-doped ZnO (IZO) were alternatively deposited by spin coating with sol-gel method. After deposition of multilayered thin films, multi steps of furnace (F), rapid thermal annealing (R) and CO2 laser annealing (L) processes were carried out and investigated thin film properties by dependence of post-annealing sequence and thin film structures. The electrical and optical properties of thin films were investigated by 4-point probe and UV-vis spectroscopy and its shows the greatest sheet resistance value of 0.59 kΩ/sq. from AZO/IZO multilayered structure and upper 85% of transmittance. The structural property and surface morphology were measured by X-Ray Diffraction (XRD) and field emission scanning electron microscopy (FE-SEM). The Al- and In-doped ZnO thin film shows the highest intensity value at (002) peak of AZO/IZO multilayer structure which was performed FRL process.


2007 ◽  
Vol 40 (18) ◽  
pp. 5592-5597 ◽  
Author(s):  
Qingjiang Yu ◽  
Wuyou Fu ◽  
Cuiling Yu ◽  
Haibin Yang ◽  
Ronghui Wei ◽  
...  

1999 ◽  
Author(s):  
Chan Hin Kam ◽  
Shi De Cheng ◽  
Yan Zhou ◽  
Kantisara Pita ◽  
X. Q. Han ◽  
...  

2004 ◽  
Vol 236 (1-4) ◽  
pp. 306-312 ◽  
Author(s):  
Somnath C Roy ◽  
G.L Sharma ◽  
M.C Bhatnagar ◽  
R Manchanda ◽  
V.R Balakrishnan ◽  
...  

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