Investigation of the protective layer in T5 Square-Shaped Fluorescent Lamps.

Abstract

We expect that T5 square-shaped fluorescent lamps are better characteristics than T5 circular fluorescent lamps because of partial glass bulb bendeing. But there is fear that remove and crack of phosphor layer bring about reduction of the efficiency. To prevent reduction of the efficiency we investigated the protective layer. We did the experiment with mixture of two protective materials there are different particle size. One is 10nm and another is 4000nm. Mixture ratio is 1:4. As a result of this experiment we prevented remove and crack of phosphor layer and reduction of the efficiency.