Near-infrared quantum cutting in Bi3+/Yb3+ co-doped oxyfluoride glasses via cooperative energy transfer for solar cells
Near-infrared quantum cutting in Bi3+/Yb3+ co-doped oxyfluoride glasses via cooperative energy transfer for solar cells
复制标题
Bi3/Yb3共掺杂氟氧化物玻璃的近红外量子切割通过太阳能电池的协同能量转移
DOI:
10.1016/j.optmat.2014.10.047
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发表时间:
2014-12
影响因子:
3.9
通讯作者:
Yanli Mao*
中科院分区:
文献类型:
--
作者:
Weirong Wang;Shaofeng Zou;Xiao Lei;Huiping Gao;Yanli Mao*
The Bi3+/Yb3+ion co-doped 55SiO2–20Al2O3–5Na2CO3–20CaF2glasses are synthesized successfully by a conventional melting-quenching method. High efficient quantum cutting involving the emission of two near-infrared photons for one ultraviolet photon absorbed is realized in the oxyfluoride glasses co-doped with Bi3+and Yb3+. An intense characteristic near-infrared emission around 977 nm of Yb3+:2F5/2→2F7/2transition is obtained when the 303 nm is as excitation wavelength to induce the1S0→3P1transition of Bi3+. The maximum quantum efficiency of our glasses is estimated to be 164.3%. The energy transfer mechanism is proposed to be a cooperative energy transfer via second-order down-conversion process. The glasses could be a potential quantum cutting converter to improve the photovoltaic energy conversion efficiency of crystalline Si solar cells via spectrum modification.
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