| Title |
The Correlation Properties between Substrate and Molybdenum Back Contacts Fabricated by DC Magnetron Sputtering |
| Authors |
김석기(Kim, Seok-Gi) ; 한상옥(Han, Sang-Ok) |
| Keywords |
Bi-layer ; Mo Film ; Adhesion ; DC Magnetron Sputtering |
| Abstract |
Bi-layer Mo films were deposited on soda-lime glass substrates using DC magnetron supttering. Increasing gas pressure, the resistivity varied from 1×10^{-5} to 8.3×10^{-3} Ω.cm. Furthermore, stress direction yielded compressive-to-tensile transition stress curves. The micro-structure of the compressively-stressed film which had poor adhesion consists of tightly packed columns, but of the tensile-stressed films had less dense structure. Under all gas pressure conditions, Mo films exhibited distinctly increasing optical reflection with decreasing gas pressure. The expansion of (110) peak width with the gas pressure meant the worse crystalline growth. The impurity levels in the Mo film exhibited highly concentrated Na, Se and O elements due to less dense micro-structure. The degree of Na diffusion depends on the type of the glass substrate used and the nature of the Mo film. |