Low-temperature synthesis of NaRE(WO4)2 films via anion exchange from layered rare-earth hydroxides (LRHs) films, phase/morphology evolution and photoluminescence

LRH films were prepared via electrodeposition within 10 minutes, and they were used as precursor templates to produce NaRE(WO 4 ) 2 films at pH ∼ 10. The obtained NaEu(WO 4 ) 2 and NaTb(WO 4 ) 2 films exhibit enhanced photoluminescence.