FIELD: manufacturing technology.
SUBSTANCE: invention relates to inorganic materials for ultraviolet radiation solid-state indicators. Inorganic photochromic material with spatial memory effect contains Cu – 0.012–0.015 wt%, Gd – 0.0004–0.0006 wt% and ZnS – rest.
EFFECT: technical result is creation of material with pronounced spatially-selective photochromic properties when exposed to long-wave ultraviolet radiation and color change memory effect ≥ 30 sec.
1 cl, 1 tbl, 2 dwg
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