[Fig 3]Surface changes of LBSO thin films before and after heat treatment (IMAGE)

National Research Council of Science & Technology

[Fig 3]Surface changes of LBSO thin films before and after heat treatment

Caption

Surface changes of the thin film at various temperatures and laser intensities during heat exposure. It was observed that fine nanostructures formed on the surface; however, it was experimentally confirmed that these particles did not affect the material's linear optical properties. Semiconductor materials absorb light with higher energy than their bandgap, and exposure to intense ultraviolet light can induce changes in material properties. However, experimental evidence shows that LBSO material remains unchanged in its characteristics even when exposed to intense UV excimer laser, strong enough for the thin film to be etched.

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Korea Institute of Science and Technology(KIST)

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