کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1786474 | 1023416 | 2013 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Single-phased silicate-hosted phosphor with 660 nm-featured band emission for biological light-emitting diodes Single-phased silicate-hosted phosphor with 660 nm-featured band emission for biological light-emitting diodes](/preview/png/1786474.png)
A single-phased (Ba,Sr)3MgSi2O8:Eu2+, Mn2+ phosphor with 660 nm-featured dual band-emission is investigated upon optimizing composition to simulate the artificial photosynthetic action spectrum (PAS) for near-ultraviolet (NUV) biological light-emitting diodes (bio-LEDs). A specific composition range in Ba–Sr binary solid solution of (Ba,Sr)3MgSi2O8 is found to be capable of obtaining single-phased host in the absence of an easily formed orthosilicate impurity, leading to a 660 nm-featured red band emission of Mn2+ induced by an efficient energy transfer from a co-doped blue-emitting Eu2+ sensitizer. This dual broad band emission phosphor has a 72 nm full width at half maximum (FWHM) for red band that covers fairly well to the absorption spectrum of chlorophyll and PAS for most plants, enabling a flexible option in the application of bio-illumination for artificial photosynthesis.
Journal: Current Applied Physics - Volume 13, Issue 7, September 2013, Pages 1506–1511