Aluminum- and boron-co-doped ZnO ceramics: structural, morphological and electrical characterization

作者：Liu, Shimin^*; Liu, Jindong; Jiang, Weiwei; Liu, Chaoqian; Ding, Wanyu; Wang, Hualin; Wang, Nan

来源：Applied Physics A, 2016, 122(10): 878.

DOI：10.1007/s00339-016-0397-9

• THIN-FILMS
• ZINC-OXIDE
• NANOSTRUCTURED POWDERS
• SINTERING BEHAVIOR
• SPUTTERING TARGET
• AZO FILMS
• MICROSTRUCTURE

Highly dense and electrically conductive aluminum-and boron-co-doped ZnO (ABZO) ceramics were prepared by traditional pressureless sintering process. Single aluminum-doped ZnO (AZO) ceramics were synthesized with similar process and characterized for comparison. The densification behavior, crystal structure, morphology, composition and electrical properties of the ceramics were studied. Results indicated that AZO ceramics with the maximum relative density of 99.01 % were obtained only at 1350 degrees C for 4 h, which, however, was accompanied by electrical conductivity deterioration because of the increased insulated ZnAl2O4 phase formed in ceramics. Interestingly, the ABZO ceramics reached the maximum relative density of 98.84 % at 1100 degrees C, which was 250 degrees C lower compared with that of AZO ceramics. Moreover, the electrical conductivity of ABZO ceramics improved significantly with the increased sintering temperature and increased insulated ZnAl2O4 phase, which should be ascribed to the decreased grain boundaries and the resultant reduced carrier scattering in ceramics overcoming the influence of increased ZnAl2O4 phase due to boron doping effect.

• 出版日期2016-10
• 单位大连交通大学