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In this work, we study the potential of Eu-doped 2D α-MoO3 nanocrystal films for their implementation in nanophotonic luminescent devices. The films have been fabricated by pulsed laser deposition by alternate deposition of MoO3 and Eu targets. The result was a multilayer nano-film of MoO3 layers and Eu3+ doping ions between them. The resulting films are amorphous with of Eu concentrations up to 0.3%. Upon, thermal treatment the formation of the crystals occurs. When this MoO3 crystals are excited by a 355 nm laser, a clear luminousness emission peak appears in the red around 611 nm correspond to the 5D0→7F2 transition of Eu3+. This work is promising towards the development of integrated nano-emitting devices based in 2D α-MoO3.
Nieto‐Pinero et al. (Thu,) studied this question.