Abstract
Nd3+/Ho3+/Yb3+ single-doped Ba2YV3O11 near infrared (NIR) emitting phosphors were produced using sol-gel route, and their structures were determined by X-ray diffraction (XRD). The down conversion spectra, luminescence lifetime and energy transfer (ET) efficiency of samples have been investigated, which indicate that Ba2YV3O11: Nd3+/Ho3+/Yb3+ phosphors offer intense broad absorption band (250–400 nm) and emit efficient 900–1100 nm NIR emission where the crystal silicon solar cells display the optimal response. The ET processes from [VO4]3- to dopants Nd3+/Ho3+/Yb3+ and possible ET mechanisms were also proposed in detail. Results showed that the Ba2YV3O11: Nd3+/Ho3+/Yb3+ phosphors were potential solar spectral converters for enhancing the silicon solar cell efficiency by absorption enhancement.
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