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STEM and EELS Investigation on Black Phosphorus at Atomic Resolution

Recently, black phosphorus has attracted a huge attention for the discovery of unusual properties with high potential for microelectronics [1-4]. Black phosphorus is the thermodynamically more stable phase of phosphorus, at ambient pressure and temperature. Black phosphorus is a narrow-gap semiconductor with orthorhombic structure. It is a layered material, with each layer forming a puckered surface due to sp3 hybridization.