Laser microstructured metal thin films as promising alternative for indium based transparent electrodes
Research output: Contribution to journal › Research article › Contributed › peer-review
Contributors
Abstract
In the search for alternative materials to replace indium-tin-oxide in transparent electrodes we have structured copper and aluminum thin films (between 5 an 40 nm) for tailoring their optical properties. Micrometer scaled holes were produced using the direct laser interference patterning (DLIP) technique. We compared the optical and electrical parameters of nanosecond and picosecond processed thin films. It was found that the optical transmittance of the structured layers was relatively increased between 25 to 125% while the electrical resistance was marginally influenced. In addition, the laser treatment enhanced the diffuse to total transmission ratio (HAZE) by values ranging from 30 to 82% (relative) as a potential advantage of μm structuring. The results also show that both of the studied metals succeed to match the target which is set by typical applications of indium thin oxide (ITO) films. Furthermore, numerical simulations are performed in order to understand the ablation process of thin film material for ps and ns pulses.
Details
Original language | English |
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Pages (from-to) | A553-68 |
Journal | Optics express |
Volume | 24 |
Issue number | 6 |
Publication status | Published - 21 Mar 2016 |
Peer-reviewed | Yes |
External IDs
Scopus | 84962650050 |
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