Characterization of the pulsed laser evaporation process: Selenium thin-film formation

Hansen, S. G.; Robitaille, T. E.
February 1987
Applied Physics Letters;2/9/1987, Vol. 50 Issue 6, p359
Academic Journal
Selenium (Se) films were prepared by pulsed laser evaporation of the elemental powder in vacuum. Film growth rates as a function of average laser power (0.1–5 W/cm2) and wavelength (266–1064 nm) were measured. The angular distribution of evaporated material was found to be unusually narrow for wavelengths shorter than the Se absorption edge (∼600 nm). The photon efficiency for evaporation ranged from 0.4 to 0.1 atoms/photon for 266 to 1064 nm light, respectively.


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