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. 2015 Aug 12;10:320. doi: 10.1186/s11671-015-1013-1

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© Cai and Wang. 2015

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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.

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Fig. 16 — Heterogeneous integration of CNT (p-type) and ZTO (n-type) semiconductors for printed complementary integrated circuits. a Schematic diagram of the CMOS inverter. b Output characteristics of the printed n-type and p-type TFT. c VTC (left) and voltage gain (right) of the printed inverter under various supply voltages. d Printed 5-stage ring oscillator using the complementary inverters. Top: optical micrograph. Bottom: output signal of the oscillator driven by a V _dd of 8 V. Reproduced from ref. [94]