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KGd(WO4)2 /(KGW) micro-crystalline powders, doped with selected rare earth (RE) ions, namely Ho3+, Er3+, Tm3+, Tb3+ and/or Yb3+ ions, were synthesized using modified Pechini method. RE doped KGW micro-crystalline powders exhibit multicolor up-conversion luminescence in the VIS and NIR spectral ranges under 975 nm laser diode excitation. The spectroscopic properties of KGW:RE3+ were investigated using...
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