The Application of Phosphor in Agricultural Field

Abstract

The applications of phosphor in agricultural field mainly include light conversion film (LCF) to cover greenhouse and LED plant lamp (LED-pl). For light conversion agent (LCA), phosphors are obviously indispensable for the devices and therefore influence their eventual performances such as light conversion efficiency and life of devices. For LCA, the phosphors should be able to be excited by the lights with wavelengths from 290 to 350 nm and/or from 510 to 580 nm and emit 400- to 480-nm blue light and 600- to 680-nm red light at the same time. This can match with the absorption peak of chlorophyll photosynthesis and therefore increase the overall efficiency of the plant photosynthesis and then increase yield and quality of crops. In this chapter, mechanisms and typical phosphors are reviewed, and some examples of practical application in vegetable and tea cultivation are exhibited. At the end, future challenges to research and development of these phosphors are discussed.