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Published on: March 4, 2021
Layer-dependent surface potential of phosphorene and anisotropic/layer-dependent charge transfer in phosphorene-gold
Renjing Xu1, Jiong Yang1, Yi Zhu1
1Research School of Engineering, College of Engineering and Computer Science, the Australian National University, Canberra, ACT 0200, Australia. yuerui.lu@anu.edu.au.
Abstract:
The surface potential and the efficiency of interfacial charge transfer are extremely important for designing future semiconductor devices based on the emerging two-dimensional (2D) phosphorene. Here, we directly measured the strong layer-dependent surface potential of mono- and few-layered phosphorene on gold, which is consistent with the reported theoretical prediction. At the same time, we used an optical way photoluminescence (PL) spectroscopy to probe charge transfer in the phosphorene-gold hybrid system. We firstly observed highly anisotropic and layer-dependent PL quenching in the phosphorene-gold hybrid system, which is attributed to the highly anisotropic/layer-dependent interfacial charge transfer.
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