Coating processes – Electrical product produced – Welding electrode
Patent
1981-08-03
1984-07-31
Bernstein, Hiram H.
Coating processes
Electrical product produced
Welding electrode
156DIG80, 427 86, B05D 512
Patent
active
044630280
ABSTRACT:
There is described a method for preparing polycrystalline semi-conducting films comprised of two elements respectively from Groups III and V, or Groups II and VI of the Periodic Table, by irradiating with a laser beam a film which is comprised of at least two layers from elements selected with a stoichiometric ratio, said film being deposited over a non-crystalline substrate and being coated with a protective layer, which method is comprised of irradiating said film with a structured laser beam to cause crystallizing into crystallites which are regularly aligned and with a size at least equal to the thickness of the resulting film.
REFERENCES:
patent: 3585088 (1971-06-01), Schwuttke et al.
patent: 4059461 (1977-11-01), Fan et al.
patent: 4212900 (1980-07-01), Serlin
Andrew et al., "Laser-Induced Metal-to-Semiconductor Phase Transition in Mixed Al-Sb Films", Applied Physics, vol. 35, No. 5, Sep. 1, 1979, pp. 418-420.
Fan et al., "Solid-Phase Growth of Large Aligned Grains During Scanned Laser Crystallization of Amorphous Ge Films on Fused Silica", Applied Physics, vol. 36, No. 2, Jan. 15, 1980, pp. 158-161.
Vitali et al., "Laser Induced Single-Crystal Transition in Polycrystalline Silicon", Applied Physics, vol. 17, No. 1, Sep. 1978, pp. 111-113.
Tsu et al., "Laser-Induced Recrystallization and Damage in GaAs", Applied Physics, vol. 34, No. 2, Jan. 15, 1979, pp. 153-155.
WO/80/00510 (Philips Patentverwaltung).
Bernstein Hiram H.
L'Etat Belge, Represente par le Secretaire General des Services
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