This product contains black phosphorus (BPs) mono- and few-layer flakes solution in ethanol. The BPs solution has been developed by ultrasonic treatment of BPs high quality crystals synthesized through cubic anvil device high pressure growth technique. Since the starting material BPs is highly crystalline, ultrasonic treatment to delaminate BPs layers yields highly crystalline BPs mono-, few-, and some thick layers suspended in ethanol solution. The crystallinity of BPs nanomaterials has been confirmed through electron energy dispersive spectroscopy (EDAX), Raman spectroscopy (FWHM<5cm-1), and scanning electron microscopy (SEM) measurements. Lateral sizes of BPs flakes deposited onto different substrates range from ~25nm - ~10 um while thickness range from 1L to 10s of layers.