Narrowing of Broad Band Light Emitted from a SSI-LED
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The Electrochemical Society. The broad band light emitted from a SSI-LED has been narrowed down with the addition of a PECVD a-Si:H or SiNx thin film light filter. The a-Si:H film absorbs the light in the short wavelength range beyond which its transmittance increases with the increase of wavelength. The SiNx film shows strong interference effect related to its refractive index and thickness. The light filtering effect of both thin films can last for a long period of time in air. There are many possible applications of the narrow band light emitted from the thin film coated and IC-compatible SSI-LED.
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