Photochemical solution processing of films of metastable phases for flexible devices: the β-Bi₂O₃ polymorph.

ABSTRACT: The potential of UV-light for the photochemical synthesis and stabilization of non-equilibrium crystalline phases in thin films is demonstrated for the β-Bi₂O₃ polymorph. The pure β-Bi₂O₃ phase is thermodynamically stable at high temperature (450-667 °C), which limits its applications in devices. Here, a tailored UV-absorbing bismuth(III)-N-methyldiethanolamine complex is selected as an ideal precursor for this phase, in order to induce under UV-light the formation of a -Bi-O-Bi- continuous network in the deposited layers and the further conversion into the β-Bi₂O₃ polymorph at a temperature as low as 250 °C. The stabilization of the β-Bi₂O₃ films is confirmed by their conductivity behavior and a thorou

SUBMITTER: Perez-Mezcua D 

PROVIDER: S-EPMC5171705 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature