Huang, Wen-TseWen-TseHuangSu, Ting-YiTing-YiSuChuang, Jung-HwaJung-HwaChuangLu, Kuang-MaoKuang-MaoLuHu, Shu-FenShu-FenHuRU-SHI LIU2023-08-042023-08-042023-07-1219448244https://scholars.lib.ntu.edu.tw/handle/123456789/634436The rapid change in population, environment, and climate is accompanied by the food crisis. As a new type of farming, indoor agriculture opens the possibility of addressing this crisis in the future. In this study, a phosphor-converted light-emitting diode (pc-LED), as energy-saving lighting for indoor agriculture, was used to evaluate the response and effect on the growth of Lactuca sativa. Red phosphors, SrLiAl3N4:Eu2+ (SLA) and CaAlSiN3:Eu2+ (CASN), were characterized and analyzed with crystal structure, morphology, and optical properties. Eu2+-doped phosphors provided the red emission of around 650 nm which is highly matched with the absorption of chlorophyll. Under the same luminescence intensity, broader emission of CASN pc-LED demonstrated a 100% increase of photosynthetically active photon flux density and 130% promotion of plant weight than the SLA pc-LED, which reflected the positive result of the carbon fixation. The chlorophyll and nitrate responses have also revealed the effect of broader red light on indoor agriculture.enEu2+-doped phosphors; broadband emission; full-width half maximum; indoor agriculture; phosphor-converted lighting; plant growth modeling and responsejournal article10.1021/acsami.3c06454373641732-s2.0-85164375649https://api.elsevier.com/content/abstract/scopus_id/85164375649