Xinjiang Yili Normal College

Yining, China

Xinjiang Yili Normal College

Yining, China
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Aidilibike T.,Xinjiang Normal University | Aidilibike T.,Xinjiang Yili Normal College | Asilibieke B.,Xinjiang Yili Normal College | Sidike A.,Xinjiang Normal University
Guang Pu Xue Yu Guang Pu Fen Xi/Spectroscopy and Spectral Analysis | Year: 2013

Na8Al6Si6 O24Cl2:Mn and Na8Al6Si6 O24Cl2:Fe NIR phosphors were prepared by a solid-solid reaction at high temperature. Their crystal structures of fluorescent powder were investigated by using X-ray powder diffraction (XRD), and their NIR emission spectrum and excitation spectrum were measured at room temperature. The main emission peak of Mn5+ in the Na8Al6Si6 O24Cl2:Mn phosphor was observed at 1200 nm in the NIR spectral region under 400 or 602 nm excitation, attributing to the 3A2 - 3T2 and 3A2 - 1E transitions of Mn5+ ions. The characteristic NIR luminescence of Mn5+ in sodalite is greatly enhanced by co-doping manganese and sulfur. A mechanism of the energy transfer between S2 - and Mn5+ was also proposed here. The main emission peak of Fe2+ ions in the Na8Al6Si6 O24Cl2:Fe phosphor was recorded at 1000 nm in the NIR region under the excitation of 334 or 500 nm. This photoluminescence originated from the 3T1 - 5E transition of Fe2+. Such an emission in the NIR region suggests a potential application in improving solar spectrum to enhance the efficiency of silicon solar cells.


PubMed | Xinjiang Yili Normal College and Xinjiang Normal University
Type: Journal Article | Journal: Guang pu xue yu guang pu fen xi = Guang pu | Year: 2014

Na8Al6Si6O24Cl2 : Mn and Na8Al6Si6O24Cl2 : Fe NIR phosphors were prepared by a solid-solid reaction at high temperature. Their crystal structures of fluorescent powder were investigated by using X-ray powder diffraction (XRD), and their NIR emission spectrum and excitation spectrum were measured at room temperature. The main emission peak of Mn5+ in the Na8Al6Si6O24Cl2 : Mn phosphor was observed at 1 200 nm in the NIR spectral region under 400 or 602 nm excitation, attributing to the 3A2-3T2 and 3A2-1E transitions of Mn5+ ions. The characteristic NIR luminescence of Mn5+ in sodalite is greatly enhanced by co-doping manganese and sulfur. A mechanism of the energy transfer between S2(-) and Mn5+ was also proposed here. The main emission peak of Fe2+ ions in the Na8Al6Si6O24Cl2 : Fe phosphor was recorded at 1 000 nm in the NIR region under the excitation of 334 or 500 nm. This photoluminescence originated from the 3T1-5 E transition of Fe2+. Such an emission in the NIR region suggests a potential application in improving solar spectrum to enhance the efficiency of silicon solar cells.

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