Abstract
AbstractA luminescence emission in the 3.00 μm region is reported for manganese activated zinc sulphide phosphors where the manganese concentration is greater than 2%. Optical absorption measurements show a maximum at 0.80 μm with sub‐bands at 0.74 and 0.84 μm, the luminescence being excited by radiation in this region. It is suggested that a new luminescence centre is formed as a result of Mn2+ ions perturbing the host‐lattice.
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