Fabrication of protective over layer for enhanced thermal stability of zinc oxide based TCO films

2013 ◽  
Vol 287 ◽  
pp. 323-328 ◽  
Author(s):  
K. Ravichandran ◽  
P. Ravikumar ◽  
B. Sakthivel
1969 ◽  
Vol 42 (2) ◽  
pp. 418-440 ◽  
Author(s):  
R. M. Russell ◽  
T. D. Skinner ◽  
A. A. Watson

Abstract It was shown in Part I that the use of EV systems in NR provides a simple network in which the crosslinks are mainly monosulfidic. Part II describes in some detail the properties of vulcanizates obtained by the use of EV systems and their relationship to conventional and TMTD-zinc oxide cured vulcanizates. The disadvantages of short scorch time and heavy bloom which accompany the TMTD-zinc oxide system are overcome by the new EV systems. The monosulfidic network obtained by the use of EV systems confers on NR good overall physical properties together with much improved resistance towards thermal and thermal oxidative aging. The thermal stability of this type of network is reflected in the outstanding resistance of the vulcanizates to set and reversion, and their good resistance to heat build-up under dynamic conditions. Vulcanizates derived from EV systems have increased resistance to thermal oxidative aging due to the inherent thermal stability of the networks and good response to antioxidant protection. This increased resistance results in much better retention of tensile properties, tear resistance and fatigue cracking resistance on aging, relative to that of conventionally cured vulcanizates.


Nanoscale ◽  
2014 ◽  
Vol 6 (3) ◽  
pp. 1698-1706 ◽  
Author(s):  
Daniela Lehr ◽  
Dennis Großmann ◽  
Wolfgang Grünert ◽  
Sebastian Polarz

The thermal stability of mesoporous ZnO nanostructures could be enhanced by intentional introduction of impurity atoms like Al or S.


2011 ◽  
Vol 685 ◽  
pp. 147-151 ◽  
Author(s):  
Jin Hua Huang ◽  
Rui Qin Tan ◽  
Jia Li ◽  
Yu Long Zhang ◽  
Ye Yang ◽  
...  

Transparent conductive oxides are key electrode materials for thin film solar cells. Aluminum doped zinc oxide has become one of the most promising transparent conductive oxide (TCO) materials because of its excellent optical and electrical properties. In this work, aluminum doped zinc oxide thin films were prepared using RF magnetron sputtering of a 4 at% ceramic target. The thermal stability of aluminum doped zinc oxide thin films was studied using various physical and structural characterization methods. It was observed that the electrical conductivity of aluminum doped zinc oxide thin films deteriorated rapidly and unevenly when it was heated up to 350 °C. When the aluminum doped zinc oxide thin films were exposed to UV ozone for a short time before heating up, its thermal stability and large area homogeneity were significantly improved. The present work provided a novel method for improving the durability of aluminum doped zinc oxides as transparent conductive electrodes in thin film solar cells.


2014 ◽  
Vol 132 (7) ◽  
pp. n/a-n/a ◽  
Author(s):  
Guoxing Li ◽  
Ming Wang ◽  
Xingliang Huang ◽  
Haixia Li ◽  
Hong He

2003 ◽  
Vol 788 ◽  
Author(s):  
Sandeep Razdan ◽  
Prabir Patra ◽  
Yong Kim ◽  
Steve Warner

ABSTRACTPolypropylene nanocomposites were prepared using zinc oxide as the filler by melt mixing process. Nanocomposites were also prepared using maleic anhydride grafted polypropylene and methylated-zinc oxide using the same method. The samples were analyzed for observing changes in morphology and thermal stability using various characterizing instruments. The results showed that zinc oxide induced changes in the morphology and thermal stability of polypropylene, though by varying amounts depending on the type of nanocomposite prepared. The nanocomposites prepared from g-PP and methylated zinc oxide showed significant changes in crystallization temperature, decomposition temperature and residue formed upon decomposition, as compared to the rest of the composites or control samples. This was attributed to higher degree of interaction existing at the interphase between the organic and inorganic phases for these nanocomposites.


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