Solution Phase Mass Synthesis of 2D Atomic Layer with Hexagonal Boron Network

Borophene and the analogs are attractive
2D-materials showing unique
mechanical and electronic properties. In this study, the bottom-up
synthesis of an atomic boron network possessing a completely planar
skeleton was achieved from KBH4. The borophene-analog was
stabilized by oxygen atoms positioned on the same plane, providing
holes and the anionic state of the layer. Potassium cations between
the layers enabled crystalline stacking of the layers, as well as
dissolution in solvents as atomically thin layers. The conductivity
measurements revealed the electronic feature. Unlike the interplane
conducting property, almost zero activation energy like a metal was
suggested from the in-plane measurement.