OPTICALLY ACTIVE INORGANIC ADDITIVE AND LIGHT TRANSFORMING FILM INCLUDING THE ADDITIVE

摘要

A photoconversion film includes at least one photoactive inorganic additive selected from the group consisting of the following compounds: 1) Y 2 - p-q-z (TR III) p(TRIV )q (TRv)zO2 S, where p is equal to 0.01 to 0.1, q is equal to 0 to 0.001, z is equal to 0 to 0.0002, Y is yttrium, TRIII is europium, TRIII is praseodymium or samarium, and TR is praseodymium or terbium; and 2) Y 2-x-y(TRI)x(TRII y SiO5, where x is equal to 0.01 to 0.1, y is equal to 0 to 0.005, Y is yttrium, TRI is cerium and TRII is neodymium or thulium. With this film, it is possible to convert the ultraviolet spectrum region to a spectrum region useful to the growth of plants.