TY - JOUR
T1 - A novel efficient single-phase dual-emission phosphor with high resemblance to the photosynthetic spectrum of chlorophyll A and B
AU - Fang, Shuangqiang
AU - Fang, Shuangqiang
AU - Lang, Tianchun
AU - Lang, Tianchun
AU - Han, Tao
AU - Han, Tao
AU - Cai, Mingsheng
AU - Cao, Shixiu
AU - Peng, Lingling
AU - Liu, Bitao
AU - Zhong, Yang
AU - Yakovlev, Alexey N.
AU - Korepanov, Vladimir I.
PY - 2020/5/14
Y1 - 2020/5/14
N2 - Light is a fuel for photosynthesis and plays an irreplaceable role in seed germination, stem elongation, leaf expansion, flowering induction, and accumulation of nutrients. However, the current phosphors combined with LEDs for photosynthesis have some unsolved problems, such as low efficiency, poor thermal stability, unvarying emission wavelength or non-matching spectrum, which restrict their applications. In this work, a series of novel efficient Lu3Al5O12:10%Ca2+,xBi3+,yMn4+ phosphors with blue-violet plus deep red dual-emission peaking at 419 and 669 nm have been first reported, which can meet the different light requirements of plants by controlling the concentration ratio of Bi3+ and Mn4+, and they possess at most 90.64% spectrum resemblance to the absorption spectrum of chlorophyll A and B. Furthermore, these phosphors exhibit high internal efficiency and at most reserve 95% of the initial intensity at 425 K. Finally, as a light source for monitoring the fluorescence spectra of evergreen plants, pc-LEDs were fabricated by UV chips and our synthesized phosphors. The results reveal that these phosphors can achieve as high as 83% photosynthetic efficiency for evergreen plants and improve it by 10% than a single emission phosphor, which shows good application prospects for improving plant photosynthesis.
AB - Light is a fuel for photosynthesis and plays an irreplaceable role in seed germination, stem elongation, leaf expansion, flowering induction, and accumulation of nutrients. However, the current phosphors combined with LEDs for photosynthesis have some unsolved problems, such as low efficiency, poor thermal stability, unvarying emission wavelength or non-matching spectrum, which restrict their applications. In this work, a series of novel efficient Lu3Al5O12:10%Ca2+,xBi3+,yMn4+ phosphors with blue-violet plus deep red dual-emission peaking at 419 and 669 nm have been first reported, which can meet the different light requirements of plants by controlling the concentration ratio of Bi3+ and Mn4+, and they possess at most 90.64% spectrum resemblance to the absorption spectrum of chlorophyll A and B. Furthermore, these phosphors exhibit high internal efficiency and at most reserve 95% of the initial intensity at 425 K. Finally, as a light source for monitoring the fluorescence spectra of evergreen plants, pc-LEDs were fabricated by UV chips and our synthesized phosphors. The results reveal that these phosphors can achieve as high as 83% photosynthetic efficiency for evergreen plants and improve it by 10% than a single emission phosphor, which shows good application prospects for improving plant photosynthesis.
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U2 - 10.1039/d0tc00811g
DO - 10.1039/d0tc00811g
M3 - Article
AN - SCOPUS:85087426467
VL - 8
SP - 6245
EP - 6253
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
SN - 2050-7526
IS - 18
ER -