Enhanced UV-Emitting Fluorescent Lamp

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An enhanced UV-emitting fluorescent lamp is described that provides a UV spectral emission for simultaneously tanning of the human skin and promotion of vitamin D production in the human body. The lamp contains a phosphor layer having a phosphor blend of three rare-earth-activated phosphors : SrB4O7 : Eu, LaPO4 : Ce and YPO4 : Ce. Preferably, the phosphor blend comprises 25-27% SrB4O7 : Eu, 23-26% LaPO4 : Ce, and 47-52% YPO4 : Ce by weight.