DESIGN OF A NEW WELD FREE SS BUBBLER FOR CORROSIVE AND HAZARDOUS CHEMICALS LIKE, TIN TETRACHLORIDE USED FOR THE DEPOSITION OF TRANSPARENT CONDUCTING OXIDE THIN FILM FOR SOLAR CELL APPLICATIONS

摘要

The invention relates to an openable stainless steel (SS) bubbler adaptable for deposition of front conducting electrode in thin film solar cell, comprising a bottom flange (1b) having a groove to hold a viton "O" ring (9) welded from the bottom to a cylindrical flask (2), a plurality of teflon tubes (3a to 3d) fixed to a top flange via threaded PFA tube fittings (10,10a), one each of the tubes (3a to 3d) at a first end provided with a temperature sensor (4), vapour out means (5), draining means (6), and input means (7) for the carrier nitrogen, the distant ends of the tubes (3a to 3c) being submerged in the highly corrosive liquid inside the cylindrical flask (2); and the viton "O"ring (9) sand witched between the top and bottom flanges (1a,1b), to seal the bubbler (B1) by further tightening the flanges (1a,1b) with fastening means.