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. 2019 Jan 2;10:12. doi: 10.1038/s41467-018-07943-y

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 3 — Charge transfer mechanism and performance of the phototransistor. Charge transfer mechanism in dark (a) and under illumination (b). c Energy band diagram of electrode/semiconductor interface in dark and under illumination. d Transfer characteristics of DPA-based phototransistor measured under different illumination intensities in the air. e P and R as a function of illumination intensity. f D* as a function of illumination intensity. g Calculated molecular orbitals describing the first electronic excitation (E_vert = 388.67 nm; f = 0.1331) at the TD-DFT level. h −I_DS at various illumination intensities (V_GS = 0 V)