Low gravity enhanced growth of phthalocyanine polymorph films

A polymorph of a phthalocyanine, designated M-phthalocyanine or M-metal phthalocyanine, has spectroscopic properties different from those of any of known crystalline polymorphs of phthalocyanine, the polymorph having been prepared in an environment of at most 0.1 G. In a further aspect, a process is disclosed for preparing novel organic films comprising a closed chamber physical vapor transport (PVT) in a low gravity environment. Films of novel polymorphs have a surface roughness factor in the range of greater than 1.000000 and less than 1.000010, a density of at least 50 percent increase over any polymorph of the same molecules produced in unit gravity, and in which at least 50 weight percent of the molecules of said film have a common uniaxial orientation.