期刊
JOURNAL OF LUMINESCENCE
卷 132, 期 5, 页码 1285-1289出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2011.12.068
关键词
Near infrared quantum cutting; Y2O3:Bi, Yb transparent films; Silicon solar cells; Thickness
类别
资金
- National Natural Science Foundation of China (NSFC) [51032002, 11074017, 11174021]
- IHLB [PHR201007101]
- Beijing Nova Program [2008B10]
- Beijing Natural Science Foundation [1102006]
- Basic Research Foundation of Beijing University of Technology
By a pulsed laser deposition technique the efficient broadband near-infrared downconversion Bi-Yb codoped crystallization Y2O3 transparent films have been grown successfully on Si (1 0 0) substrates. Upon excitation of ultraviolet photon varying from 300 to 400 nm, the near infrared quantum cutting has been obtained, which is originated from the transitions of the transition-metal Bi3+ P-3(1) level to Yb3+ F-2(5/2) level. The downconversion quantum efficiency of films is estimated to be 152%. The transparent Y2O3 films may have potential application in enhancing the conversion efficiency of crystalline Si solar cells. (C) 2012 Elsevier B.V. All rights reserved.
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