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Synthesis and Characterization of Rare Earth (Tb3+ and Yb3+) Doped CdS/ZnS Core/Shell Nanocrystals for Enhanced Photovoltaic Efficiency

  • Sandip Das (a1) and Krishna C. Mandal (a1)

Abstract

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 (Tb3+) and ytterbium (Yb3+) ions. RE3+-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. RE3+-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 RE3+-doped nanocrystals can be used as solar spectral matching downconversion material to enhance photovoltaic efficiency of existing solar cells.

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1. Yang, Heesun, and Holloway, Paul H., Appl. Phys Lett., 82 (2003) 1965.
2. Zeng, Ruosheng, Rutherford, Michael, Xie, Renguo, Zou, Bingsuo, and Peng, Xiaogang, Chem. Mater., 22 (2010) 2107.
3. Mandal, Krishna C., Kang, Sung H., Choi, Michael, and David Rauh, R., Int. J. High Speed Electronics and Sys., 18 (2008) 735.
4. Rademaker, Katja, Krupke, William F., Page, Ralph H., Payne, Stephen A., Petermann, Klaus, Huber, Guenter, Yelisseyev, Alexander P., Isaenko, Ludmila I., Roy, Utpal N., Burger, Arnold, Mandal, Krishna C., and Nitsch, Karel, J. Opt. Soc. Am. B, 21 (2004) 2117.
5. Huang, X. Y., Yu, D.C., and Zhang, Q.Y., J. Appl. Phys., 106 (2009) 113521.
6. Ye, Song, Zhu, Bin, Chen, Jingxin, Luo, Jin, and Qiu, Jian Rong, Appl. Phys. Lett., 92 (2008) 141112.
7. Wang, Yuhua, Xie, Lechun, and Zhang, Huijuan, J. Appl. Phys., 105 (2009) 023528.
8. Lee, Te-Ju, Luo, Li-Yang, Diau, Eric Wei-Guang, and Chen, Teng-Ming, Appl. Phys. Lett., 89 (2006) 131121.
9. Zhang, Qiuhong, Wang, Jing, Zhang, Gongguo, and Su, Qiang, J. Mater. Chem., 19 (2009) 7088.
10. Yu, W. William, and Peng, Xiaogang, Angew. Chem. Int. Ed., 41 (2002) 2368
11. Yang, Yongan, Chen, Ou, Angerhofer, Alexander, and Cao, Charles, J. Am. Chem. Soc., 130 (2008) 15649.
12. Xie, Renguo, Kolb, Ute, Li, Jixue, Basché, Thomas, and Mews, Alf, J. Am. Chem. Soc., 127 (2005) 7480.
13. Yu, W. William, Qu, Lianhua, Guo, Wenzhuo, and Peng, Xiaogang, Chem. Mater., 15 (2003), 2854.

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