Two-dimensional superconductivity driven by interfacial electron-phonon coupling in a <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>BaPbO</mml:mi><mml:mn>3</mml:mn></mml:msub><mml:mo>/</mml:mo><mml:msub><mml:mi>BaBiO</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math> bilayer

The recent discovery of two-dimensional (2D) superconductivity at the interface $\mathrm{Ba}\mathrm{Pb}{\mathrm{O}}_{3}$ (BPO) and $\mathrm{Ba}\mathrm{Bi}{\mathrm{O}}_{3}$ (BBO) has motivated us to study in depth electronic structural properties relation between them this particular heterostructure, by means first-principles calculations. Our results indicate that breathing distortions, charge ordering, semiconducting behavior characterize parent compound BBO its bulk form are preserved innermost layers side BPO/BBO bilayer. On other hand, interface, there is a partial breaking distortions with concomitant transfer interfacial Bi ions on top BPO layer. We show two types carriers coexist delocalized three-dimensional-like $sp$ states coming from Pb quasi-2D $s$ ones. obtain substantial electron-phonon coupling 2D stretching phonon mode large density can explain critical temperature experimentally observed below 3.5 K. hope these findings will motivate future research explore different interfaces charge-ordered semiconductors such as order trigger fascinating behavior.