Method for enhancing photosynthesis spectral intensity of LED phosphor by using plasma

A method for enhancing photosynthesis spectral intensity of an LED phosphor by using plasma is realized by employing metal surface plasma effect. A light source emitting blue-violet light is employed, and blue-violet light irradiates on a metal film to generate surface plasma effect, which interacts with emit photons of the phosphor, so that intensity of photosynthesis spectrum emitted by the phosphor is enhanced. The method comprises the following steps: 1) placing a glass substrate in a sputtering cavity, carrying out sputtering deposit on a metal target, and carrying out heat treatment in nitrogen to prepare an insular metal nano film; 2) dispersing the LED phosphor in a dispersing agent to form a phosphor solution, coating the phosphor solution on the glass substrate with the metal nano film prepared on by spin coating and obtaining a phosphor / Ag chemiluminescence system. The invention has advantages of simple technology, low cost, simultaneous increase of red and blue light andilluminating enhancement proportion controlled by metal sputtering time, and is easy for practice and beneficial for popularization and application.