Overview Light-emitting diodes(LEDs)have enabled a historic increase in the conversion of electric energy to photons,but this is approaching a physical limit.The theoretical maximum efficiency occurs when all input en...Overview Light-emitting diodes(LEDs)have enabled a historic increase in the conversion of electric energy to photons,but this is approaching a physical limit.The theoretical maximum efficiency occurs when all input energy is converted to energy in photosynthetic photons.Blue LEDs can be 93%efficient,phosphor-converted“whites”76%efficient,and red LEDs 81%efficient.These improvements open new opportunities for horticultural lighting.展开更多
基金supported by the Utah Agricultural Experiment Station,Utah State University,journal paper number 9260the USDA-NIFA-SCRI award 2018-51181-28365(LAMP Project)the NASA-CUBES award number NNX17AJ31G,and the Department of Energy through the Energy Efficiency and Renewable Energy Buildings Technologies Office Lighting R&D Program under contract#DEFE0025912 at the National Energy Technology Laboratory on the Mission Execution and Strategic Analysis contract with KeyLogic.
文摘Overview Light-emitting diodes(LEDs)have enabled a historic increase in the conversion of electric energy to photons,but this is approaching a physical limit.The theoretical maximum efficiency occurs when all input energy is converted to energy in photosynthetic photons.Blue LEDs can be 93%efficient,phosphor-converted“whites”76%efficient,and red LEDs 81%efficient.These improvements open new opportunities for horticultural lighting.
