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研究了Er1.0P5O14铒非晶玻璃的红外量子剪裁现象. 从吸收谱和激发光谱的计算比较中肯定了Er1.0P5O14非晶 玻璃的1537.0 nm红外荧光为多光子量子剪裁荧光. 从Er1.0P5O14非晶玻璃的可见和红外荧光发射光谱中发现激发2H11/2, 4G11/2和4G9/2能级所导致的4I13/2→4I15/2量子剪裁红外荧光很强;基于自发辐射速率、无辐射弛豫速率和能量传递速率等参数的计算,对其量子剪裁机理进行了分析.发现起源于基态的强下转换能量传递{2H11/2→4I9/2,4I15/2→4I13/2},{4G11/2→4I13/2, 4I15/2→2H11/2},{4G9/2→4F7/2,4I15/2→4I13/2}和{4G9/2→4I13/2, 4I15/2→2H11/2}是导致Er1.0P5O14非晶玻璃具有强的三光子和四光子量子剪裁红外荧光的原因.研究结果对改善太阳能电池效率有一定意义.
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关键词:
- 稀土红外量子剪裁现象 /
- 太阳能电池 /
- Er1.0P5O14非晶玻璃
The infrared quantum cutting phenomena, which is an international hot research field, of Er1.0P5O14 noncrystalline glass are studied by the present paper for the first time. The 1537.0nm infrared fluorescence of Er1.0P5O14 noncrystalline glass is confirmed to be the multi-photon quantum cutting fluorescence by computation and comparison between absorption and excitation spectra. It is found that the 4I13/2→4I15/2 quantum cutting fluorescence is very strong, induced by the excited 2H11/2, 4G11/2, and 4G9/2 energy levels. Its mechanism is thoroughly analyzed based on the calculation of spontaneous emission rates, nonradiative multiphonon relaxation rates and energy transfer rates. It is found the strong downconversion energy transfers {2H11/2→4I9/2,4I15/2→4I13/2},{4G11/2→4I13/2, 4I15/2→2H11/2},{4G9/2→4F7/2,4I15/2→4I13/2} 和 {4G9/2→4I13/2, 4I15/2→2H11/2} are responsible for the strong infrared three-photon and four-photon quantum cutting fluorescence of Er1.0P5O14 noncrystalline glass. The present research is significant for enhancing solar cell efficiency.-
Keywords:
- infrared quantum cutting /
- solar cell /
- Er1.0P5O14
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[20] Wei X T, Zhao J B, Chen Y H, Yin M, Li Y 2010 Chin. Phys. B 19 077804
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[1] Yang G Z, National Natural Science Foundation of China 1995 Optical Physics (Beijing: Science Press)(in Chinese)[杨国桢, 国家自然科学基金委员会 1995 光物理科学 (北京: 科学出版社)]
[2] Wegh R T, Donker H, Oskam K D, Meijerink A 1999 Science 283 663
[3] Vergeer P, Vlugt T J H, KoxMH F, den HertogMI, van der Eerden J P J M, Meijerink A 2005 Phys. Rev. B 71 014119
[4] Bitnar B 2003 Semiconduct. Sci. Technol. 18 S221
[5] Van der Ende B M, Aarts L, Meijerink A 2009 Phys. Chem. Chem. Phys. 11 11081
[6] Reisfeld R 1977 Lasers and Excited States of Rare-Earth (New York: Springer-Verlag, Berlin Heidelberg)
[7] Zhou J J, Teng Y, Ye S, Xu X Q, Qiu J R 2010 Optics Express 18 21663
[8] Chen D Q,Wang Y S, Yu Y L, Huang P,Weng F Y 2008 Opt. Lett. 33 1884
[9] Richards B S 2006 Solar Energy Materials & Solar Cells 90 1189
[10] Eliseeva S V, Bunzli J C G 2010 Chem. Soc. Rev. 39 189
[11] Danielmeyer H G, Weber H P 1972 IEEE J. Quant. Elect. 8 805
[12] Xu X R, ShuMZ 2003 Science of Luminescence and Luminescent Material (Beijing: The Publish Center of Material Science and Engineering)(in Chinese)[徐叙瑢, 苏勉曾 2003 发光学与发光材料 (北京:材料科学与工程出版中心)]
[13] Carnall W T, Fieldd R, Rajnank K T 1968 J. Chem. Phys. 49 4424
[14] Zhang Q Y, Huang X Y 2010 Prog. Mater. Sci. 55 353
[15] Chen J D, Guo H, Li Z Q, Zhang H, Zhuang Y X 2010 Opt. Mater. 32 998
[16] Song Z F, Lian S R, Hua D H, Wang S K 1982 Acta Phys. Sin. 31 772 (in Chinese)[宋增福, 连绍仁, 王淑坤 1982 31 772]
[17] Chen Y, Chen X B, Zhang H M, Xu X L,Wang C 2011 Acta Phys. Sin. 60 077802 [陈英, 陈晓波, 张会敏, 徐晓灵, 王策 2011 60 已受稿]
[18] Chen X B Wang C, Gregory J S, Naruhito S, Kang D G, Masaaki O, Yang G J, Peng F L 2009 Chin. Phys. B 18 5523
[19] Duan X J, Tan Z X, Lan X F, Huang Y S, Guo S L, Yang D W, Tang X Z, Wang N Y 2010 Acta Phys. Sin. 59 3150 [王乃彦, 段晓礁, 潭志新 2010 59 3150]
[20] Wei X T, Zhao J B, Chen Y H, Yin M, Li Y 2010 Chin. Phys. B 19 077804
[21] Chen X B, Lu J, Zhang Y Z, Xu X L, Feng B H,Wang C, Gregory J S, Yang G J 2010 Chin. Phys. B 19 097804
[22] Chen Z J, Wang S F, Wang F, Huang Z W, Gong Q H, Zhang Z J, Chen Y W, Chen H Y 1999 Acta Phys. Sin. 48 477 [陈志坚, 王树峰, 王峰, 黄植文, 陈慧英, 龚旗煌, 张志杰, 陈义旺 1999 48 477]
[23] Forster T 1948 Ann. Phys. 2 55
[24] Kushida T 1973 J. Phys. Soc. Japan 34 1318
[25] Zhao Z X, Liu F S, Han R S 1979 Acta Phys. Sin. 28 222 [赵忠贤, 刘福绥, 韩汝珊 1979 28 222]
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