LAUSR

Borophene and the analogs are attractive 2D-materials show-ing unique mechanical and electronic properties. In this study, the bottom-up synthesis of an atomic boron network pos-sessing a completely planar skeleton was achieved from KBH4. The borophene-analog was stabilized by oxygen atoms posi-tioned on the same plane, and the oxygen atoms provided holes and the anionic state of the layer. Potassium cations between the layers enabled crystalline stacking of the layers and dissolution of solvents as atomically thin layers. The conductivity measurements revealed the electronic feature. The activation energy of the in-plane conductivity suggested a metal-like behavior whereas that of the inter-plane showed a semiconducting nature.