| ErP5O14非晶玻璃的红外量子剪裁 |
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| 引用本文： | 陈晓波,杨国建,李崧,杨小冬,刘大禾,陈英,丁凤莲,吴正龙. ErP5O14非晶玻璃的红外量子剪裁[J]. 物理学报, 2012, 61(3): 37804-037804 |
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| 作者姓名： | 陈晓波 杨国建 李崧 杨小冬 刘大禾 陈英 丁凤莲 吴正龙 |
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| 作者单位： | 北京师范大学应用光学北京重点实验室和分析测试中心,北京,100875 |
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| 基金项目： | 国家自然科学基金(批准号: 10674019) 和中央高校基本科研业务费专项资金(批准号: 212-105560GK)资助的课题. |
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| 摘 要： | 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 |
| 收稿时间： | 2011-05-08 |
Infrared quantum cutting of ErP5O14 noncrystalline glass |
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| Chen Xiao-Bo,Yang Guo-Jian,Li Song,Yang Xiao-Dong,Liu Da-He,Chen Ying,Ding Feng-Lian and Wu Zheng-Long. Infrared quantum cutting of ErP5O14 noncrystalline glass[J]. Acta Physica Sinica, 2012, 61(3): 37804-037804 |
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| Authors: | Chen Xiao-Bo Yang Guo-Jian Li Song Yang Xiao-Dong Liu Da-He Chen Ying Ding Feng-Lian Wu Zheng-Long |
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| Affiliation: | Applied Optics Beijing Area Major Laboratory and Analytical Testing Center, Beijing Normal University, Beijing 100875, China;Applied Optics Beijing Area Major Laboratory and Analytical Testing Center, Beijing Normal University, Beijing 100875, China;Applied Optics Beijing Area Major Laboratory and Analytical Testing Center, Beijing Normal University, Beijing 100875, China;Applied Optics Beijing Area Major Laboratory and Analytical Testing Center, Beijing Normal University, Beijing 100875, China;Applied Optics Beijing Area Major Laboratory and Analytical Testing Center, Beijing Normal University, Beijing 100875, China;Applied Optics Beijing Area Major Laboratory and Analytical Testing Center, Beijing Normal University, Beijing 100875, China;Applied Optics Beijing Area Major Laboratory and Analytical Testing Center, Beijing Normal University, Beijing 100875, China;Applied Optics Beijing Area Major Laboratory and Analytical Testing Center, Beijing Normal University, Beijing 100875, China |
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| Abstract: | The infrared quantum cutting phenomena on Er1.0P5O14 noncrystalline glass is studied in the present paper.The 1537.0 nm 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→4 I13/2},{4G11/2→4 I13/2,4I15/2→2H11/2}.{4G9/2→4 F7/2, 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. |
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| Keywords: | infrared quantum cutting solar cell Er1.0P5O14 |
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