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. 2017 Feb 20;7:43070. doi: 10.1038/srep43070

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Copyright © 2017, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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(a) Schematic showing the local measurement conducted by photoelectric atomic force microscopy (PhAFM) under illumination. (b) Photovoltaic current probed by PhAFM tip. (c) Local I-V characteristics measured through the PhAFM tip. The linear exploration gives -35V as open circuit voltage. (d) Photovoltaic current collected by PhAFM tip as a function of light polarization. The continuous red line is the fitting with Equation 2.