Spatially resolved photocurrents in graphene nanoribbon devices
作者： Eberhard Ulrich Stützel , Thomas Dufaux , Adarsh Sagar , Stephan Rauschenbach , Kannan Balasubramanian
DOI: 10.1063/1.4789850
关键词:
摘要: We present here a scanning photocurrent microscopy study of individual graphene nanoribbons, revealing pronounced responses close to the nanoribbon/metal contacts. The magnitude corresponding signal was found be directly proportional conductance devices, suggesting that local voltage source is generated at interface by photo-thermoelectric Seebeck effect. dominance this mechanism attributed reduced thermal conduction capability nanoribbons in comparison extended sheets.
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