https://community.element14.com/learn/publications/w/documents/5895/ptb-researchers-make-graphene-visible-on-ganen-USTelligent Community 12https://community.element14.com/learn/publications/w/documents/5895/ptb-researchers-make-graphene-visible-on-ganThu, 07 Oct 2021 00:36:29 GMT93d5dcb4-84c2-446f-b2cb-99731719e767:9213a68a-2c9d-4be6-95ab-ed3e1415f0f2e14newshttps://community.element14.com/learn/publications/w/documents/5895/ptb-researchers-make-graphene-visible-on-gan#commentsCurrent Revision posted to Documents by e14news on 10/7/2021 12:36:29 AM<br /> <p style="margin:0;">Researchers at the Physikalisch-Technische Bundesanstalt (PTB) have reported a breakthrough after making graphene visible on gallium arsenide for the first time.</p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;">Graphene has been described as the perfect partner for gallium arsenide, the semiconductor which is the starting material of many highly-efficient optoelectronic components.</p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;">Previously only possible on silicon oxide, scientists at PTB has successfully made graphene visible on gallium arsenide with a normal light optical microscope by vapour-coating several layers with aluminium arsenide.</p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;">&quot;Even with optically similar materials it is possible, in a manner of speaking, to grow interference effects,&quot; explained Dr Franz-Josef Ahlers, the responsible department head at PTB.</p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;">&quot;This principle is known from optical interference filters. We have adapted it for our purposes.&quot;</p><p style="margin:0;padding:0px;">&nbsp;</p><p style="margin:0;">Earlier in the year, researtchers at the Max-Born-Institute in Berlin discovered that graphite behaves like a semiconductor in ultrafast time scales, paving the way for the development of optoelectronic devices based on carbon.</p><div style="clear:both;"></div>