US 7,517,552 B2
Glass beads coating process
Jingjia Ji, Croydon (Australia); Paul A. Basore, Caringbah (Australia); and Rhett Evans, Bulli (Australia)
Assigned to Pacific Solar Pty Limited, (Australia)
Appl. No. 10/487,580
PCT Filed Aug. 20, 2002, PCT No. PCT/AU02/01124
§ 371(c)(1), (2), (4) Date Jul. 07, 2004,
PCT Pub. No. WO03/019676, PCT Pub. Date Mar. 06, 2003.
Claims priority of application No. PR7198 (AU), filed on Aug. 23, 2001.
Prior Publication US 2004/0245212 A1, Dec. 09, 2004
Int. Cl. B05D 5/12 (2006.01)
U.S. Cl. 427—74  [427/397.7; 427/443.2; 136/256] 37 Claims
OG exemplary drawing
 
1. A method of manufacturing a thin film photovoltaic device on a transparent sheet of substrate or superstrate support material, the method comprising the steps of
a) dipping the support material in a container of film material in liquid form comprising a mixture of texturing particles in a predetermined concentration in an SiO2 sol-gel,
b) removing the support material to deposit the texturing particles on exposed surfaces in a single layer, and wherein particle separation within the single layer is controlled by adjusting the concentration of particles in the sol-gel and speed of withdrawal of the support material from the solution;
c) hardening the liquid film material to form a textured film on the support material, whereby the texturing film, after hardening, comprises the texturing particles bound in an SiO2 matrix;
d) forming a thin film of semiconductor material on the textured film; and
e) forming a photovoltaic device into the thin film of semiconductor material.