Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 509, Issue 27, Pages 7478-7483Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2011.04.085
Keywords
Transparent conducting oxide; Al-ZnO; Sintering; Uniformity; External pressure
Categories
Funding
- Korea Ministry of Knowledge Economy [10030059]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10030059] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
With the doping of Al in ZnO for the preparation of a bulk transparent conductor target, deteriorations were observed in sinterability and uniformity. The doping of 3 wt% Al resulted in the predominance of open pores after sintering at 1300 degrees C. Less open pores were observed in the ZnO with 2 wt% Al, but the porosity between the inner and outer regions was not uniform due to the preferential evaporation near the surface. To improve both the sinterability and uniformity, mild (<2 MPa) pressure was applied during the preliminary heat treatment at 900 degrees C, before pressureless final sintering. The pressed specimens showed increased density and uniformity after the final sintering, which were higher than those of the unpressed specimens. The improvements were particularly noticeable in the 3 wt% Al and at 1250 degrees C, wherein the conventional densification was not successful. (C) 2011 Elsevier B. V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available