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Achievement of an ultra-broadband deep red phosphor K3Ca0.3Y0.7Si2O7:Eu^(2+)(phase 1)for phytochrome matching plant-lighting 认领 引用 被引量：1
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作者 Xiaoshuai Zhang Xi Wang +6 位作者 Tao Yin Xuping Han Panlai Li Xiaoyan Yu Zixuan Wang Chengrun Liu Zhijun Wang 《Journal of Rare Earths》 SCIE EI CAS CSCD 2026年第1期103-111,共9页
The market demand for environmentally controlled agricultural indoor lighting is gradually increasing due to environmental pollution and drastic changes in the natural climate.Generally,matrix K3YSi2O7(phase ... The market demand for environmentally controlled agricultural indoor lighting is gradually increasing due to environmental pollution and drastic changes in the natural climate.Generally,matrix K3YSi2O7(phase 1) is difficult to synthesize compared to K3YSi2O7(phase 2),which has been illustrated by theoretical calculations.In this paper,large quantities of pure phase K3YSi2O7(phase 1) matrix were obtained by the substitution engineering strategy(Ca^(2+)→Y3+).Subsequently,Eu^(2+) was doped to obtain a thermally stable ultra-wideband deep red light-emitting phosphor with an emission band centered at721 nm and a full width at half maximum of 186 nm under 450 nm light excitation.It is noteworthy that compared with K3YSi2O7:Eu(phase 2),K3Ca0.3Y0.7Si2O7:Eu^(2+)(phase 1) is superior in terms of emission wavelength,full width at half maximum,and thermal stability.Furthermore,the spectrum resemblance between its emission spectrum and the photosensitive pigment Pfr was calculated to be 97.5%,which set the stage for subsequent plant lighting applications.Finally,light-emitting diode devices were prepared using K3Ca0.3Y0.7Si2O7:Eu^(2+) phosphor for plant lighting experiments,and plants grown under deep red light emitting diode light show more luxuriant growth.The results show that the phosphor K3Ca0.3Y0.7Si2O7:Eu^(2+) has promising applications in indoor plant culture.Meanwhile,the successful implementation of ion substitution engineering also provides a new strategy for transitions in host systems. 展开更多
关键词 Ion substitution Phase transition Eu2+ions Deep red light-emitting Plant lighting Rare earths
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