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Synthesis and Characterization of Rare Earth (Tb~(3+) and Yb~(3+)) Doped CdS/ZnS Core/Shell Nanocrystals for Enhanced Photovoltaic Efficiency

机译：稀土（Tb〜（3+）和Yb〜（3+））掺杂CdS / ZnS核/壳纳米晶体的合成与表征

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CdS host nanocrystals with 4.2-5.5 nm in diameter have been synthesized from air stable precursors via a synthetic chemical route and doped with rare earth (RE) terbium (Tb~(3+)) and ytterbium (Yb~(3+)) ions. RE~(3+)-doped CdS cores were shelled by ZnS layers of different thicknesses. The resulting core/shell nanocrystals show a complete broadband absorption below 400-460 nm to the deep UV region depending on the size of the cores. RE~(3+)-doped CdS nanocrystals showed a red shift in the emission as observed under irradiation of 302 nm UV light and was confirmed by room temperature photoluminescence (PL) measurements. The nanocrystals were further characterized by x-ray diffraction (XRD), transmission electron microscopy (TEM), and energy dispersive x-ray (EDX) analysis. The results show that these RE~(3+)-doped nanocrystals can be used as solar spectral matching downconversion material to enhance photovoltaic efficiency of existing solar cells.

机译：通过合成化学方法从空气稳定前体中合成了直径为4.2-5.5 nm的CdS宿主纳米晶体，并掺杂了稀土（RE）b（Tb〜（3+））和y（Yb〜（3+））离子。掺杂有RE〜（3+）的CdS核被不同厚度的ZnS层剥壳。所得的核/壳纳米晶体根据核的尺寸在400-460 nm以下对深紫外线区域显示出完全的宽带吸收。掺杂RE〜（3+）的CdS纳米晶体在发射302 nm紫外光时观察到发射发生红移，并通过室温光致发光（PL）测量得到证实。通过X射线衍射（XRD），透射电子显微镜（TEM）和能量色散X射线（EDX）分析进一步表征了纳米晶体。结果表明，这些掺杂RE〜（3+）的纳米晶可以用作太阳光谱匹配下转换材料，以提高现有太阳能电池的光伏效率。

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《Third-generation and emerging solar-cell technologies》|2011年|p.75-81|共7页
会议地点 San Francisco CA(US);San Francisco CA(US)
作者
Sandip Das; Krishna C. Mandal;
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作者单位

Department of Electrical Engineering, University of South Carolina, Columbia, SC 29208, USA;

Department of Electrical Engineering, University of South Carolina, Columbia, SC 29208, USA;

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原文格式 PDF
正文语种 eng
中图分类太阳能电池;
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1. Optical downconversion in rare earth (Tb~(3+) and Yb~(3+)) doped CdS nanocrystals [J] . Sandip Das, Krishna C. Mandal Materials Letters . 2012,第1期

机译：稀土（Tb〜（3+）和Yb〜（3+））掺杂CdS纳米晶体的光学下转换
2. Enhancing photovoltaic performance of dye-sensitized solar cell by rare-earth doped oxide of Lu_2O_3:(Tm~(3+), Yb~(3+)) [J] . Qingbei Li, Jianming Lin, Jihuai Wu, Electrochimica Acta . 2011,第14期

机译：通过Lu_2O_3的稀土掺杂氧化物增强染料敏化太阳能电池的光伏性能：（TM〜（3+），YB〜（3+））
3. Photoluminescence and ultra-fast decay profiles of rare-earth (III) ion-doped semiconductor nanocrystals encapsulated in silica nanotube AMCM-41/Cd_xZn_(1-x)S: Eu~(3+), Tb~(3+) [J] . M. Morita, T. Ishii, M. Baba, Journal of Luminescence . 2004,第1a4期

机译：二氧化硅纳米管AMCM-41 / Cd_xZn_（1-x）S包裹的稀土（III）离子掺杂半导体纳米晶体的光致发光和超快衰减曲线：Eu〜（3+），Tb〜（3+）
4. Synthesis and Characterization of Rare Earth (Tb~(3+) and Yb~(3+)) Doped CdS/ZnS Core/Shell Nanocrystals for Enhanced Photovoltaic Efficiency [C] . Sandip Das, Krishna C. Mandal Symposium on Third-generation and emerging solar-cell technologies . 2011

机译：稀土（Tb〜（3+）和Yb〜（3+））掺杂Cds / ZnS芯/壳纳米晶体的合成与表征，用于增强光伏效率
5. Preparation of rare earth (europium(3+), terbium(3+), thulium(3+), and ytterbium(3+)) doped yttrium oxide luminescent ceramics by the use of reverse micelles. [D] . Corral, Jessica Olga. 2005

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6. Cd-free Cu-doped ZnInS/ZnS Core/Shell Nanocrystals: Controlled Synthesis And Photophysical Properties [O] . Manpreet Kaur, Ashma Sharma, Murat Olutas, 2018

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8. Room temperature CW laser efficiency of Yb(sup 3+-)Er(sup 3+) and Tm(sup 3+) doped silicates in the infrared region [R] . Borel, C. , Souriau, J. C. , Wyon, C. , 1993

机译：室温在红外区域中Yb（sup 3 + - ）Er（sup 3+）和Tm（sup 3+）掺杂硅酸盐的CW激光效率

Synthesis and Characterization of Rare Earth (Tb~(3+) and Yb~(3+)) Doped CdS/ZnS Core/Shell Nanocrystals for Enhanced Photovoltaic Efficiency

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