@article{917c110e2c72451582e1dee8a550de51,
title = "Near infrared quantum cutting in heavy Yb doped Ce0.03Yb 3xY(2.97-3x)Al5O12 transparent ceramics for crystalline silicon solar cells",
abstract = "Near infrared (NIR) quantum cutting involving the conversion of an absorbed blue photon into two NIR photons emission has been realized in heavy Yb doped Ce0.03Yb3xY(2.97-3x)Al5O 12 (x=0.1, 0.25, and 0.5) transparent ceramics. Upon the 467 nm excitation, the energy transfer process was dominated by the cooperative downconversion from the 5d1 state of one Ce3+ ion to the 2F5/2 state of two Yb3+ ions. The influence of the Ce4+ - Yb2+ charge transfer state (CTS) should not contribute much to the energy transfer process for the large energy gap between Ce3+:5d1 and the CTS. The calculated quantum yield of Yb3+ for the x=0.25 sample without concentration quenching was 175.4%.",
author = "Hui Lin and Shengming Zhou and Hao Teng and Yukun Li and Wenjie Li and Xiaorui Hou and Tingting Jia",
note = "Funding Information: This work is supported by National Natural Science Foundation of China (Grant No. 60676004). FIG. 1. Optical transmittance of the Ce 0.03 Yb 3 x Y ( 2.97 − 3 x ) Al 5 O 12 ( x = 0 , 0.1, 0.25, and 0.5) TCs samples. Inset: a picture of the TCs samples. FIG. 2. Excitation (a) and emission (b) spectra of the TCs samples, inset: decay curves of the Yb 3 + 1028 nm emission for S1, S2, and S3 under a 432 nm excitation. FIG. 3. Decay curves of the F 2 7 / 2 → F 2 5 / 2 transition of Ce 3 + at 547 nm, inset: a table of Ce 3 + lifetime obtained by fitting, the calculated η ETE and the calculated QY of Yb 3 + for S0, S1, and S2. FIG. 4. Schematic energy level diagrams of Ce 3 + , Yb 3 + , and the Yb 2 + – O 2 − , Ce 4 + – O 2 − CTSs illustrating the QC process. ",
year = "2010",
doi = "10.1063/1.3298907",
language = "English (US)",
volume = "107",
journal = "Journal of Applied Physics",
issn = "0021-8979",
publisher = "American Institute of Physics",
number = "4",
}