Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2018 Mar 29;9:1279. doi: 10.1038/s41467-018-03695-x

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

© The Author(s) 2018

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/.

PMC Copyright notice

Fig. 5 — Highly integrated graphene emitters. a An optical image of the fabricated device of the 2 × 8 array emitters, whose size and pitch are 2 × 2 μm and 3 μm, respectively. Dashed lines indicate Pd electrodes. b NIR camera image of the emission for the array device at V_ds = 10 V. All devices are connected to the same voltage source, but an adjustable series resistor is introduced for every emitter to equalize the emission intensity of every emitter. c NIR camera images of the light emission from Al₂O₃-capped emitters with three-layer graphene after 0 and 100 h of continuous work in air. No significant change is observed after 100 h. d Optical image of the direct coupling of the capped light emitter to the multimode optical fiber (MMF) in air. In this picture, MMF is approaching the emitters. Inset: schematic image of the direct coupling of a capped light emitter to a MMF. e High-speed light emission measured by the direct coupling shown in (d)