National Nano Center makes progress in research on non-silicon based nanoelectronic devices
September 29, 2018 Source: National Nanoscience Center
Window._bd_share_config={ "common":{ "bdSnsKey":{ },"bdText":"","bdMini":"2","bdMiniList":false,"bdPic":"","bdStyle":" 0","bdSize":"16"},"share":{ }};with(document)0[(getElementsByTagName('head')[0]||body).appendChild(createElement('script')) .src='http://bdimg.share.baidu.com/static/api/js/share.js?v=89860593.js?cdnversion='+~(-new Date()/36e5)];The multi-functionalization of electronic components is an important trend in the development of applied electronic technology, and therefore non-silicon-based materials are receiving more and more attention from researchers. In 2016, the team of the National Nanoscience Center of the Chinese Academy of Sciences and the University of Ulsan University of Technology, Professor Bartosz Grzybowski and others collaborated to construct two-layer diodes, resistors and other electronic components using metal nanoparticles, and various gold nanoparticles. The built-in sensor components are integrated to realize the collection, processing and reporting of environmental signals. The relevant results are published in the form of cover articles in Nature Nanotech. (2016, 11, 603-608). Among them, the design of the most important diode is inspired by the traditional semiconductor pn junction, the two layers of oppositely charged gold nanoparticle films are in face-to-face contact, and the transportable pair of ions are mutually diffused due to the concentration gradient under entropy driving, thus at the interface. A built-in electric field is established to regulate the asymmetric transport of electrons.
Recently, the research team of Yan Yong extended similar design concepts to graphene materials with no energy gap, using oppositely charged graphene oxide as active layer and high conductivity single-wall carbon nanotube as electrode to realize all-carbon material. Construction of pn diodes. The diode has a certain light transmittance, can be integrated to achieve logic output, and can be prepared on a flexible substrate. The related results are published in "Nature Commun., 2018, 9" by All carbon materials pn diode. , 3750). In addition, through the innovation of device structure, the construction of a single charged metal nanoparticle diode is realized. That is, the carbon nanotube/graphene composite film and the gold film are used as the asymmetric electrode pairs, and the charged gold nanoparticles are used as the active layer, and the difference in capacitance values ​​of the two electrodes is utilized to create an asymmetric charge distribution under the bias voltage, thereby realizing rectification. effect. At the same time, the research team integrated it into the detection circuit of the ore radio, and realized the demodulation of the audio signal based on the self-made transmission and transmission device. Related results will be published in Science Advances (2018, 4, eaau 3546) under the topic of Switchable counterion gradients around charged metallic nanoparticles enable reception of radio waves. These work provide some ideas for the design and development of new electronic devices and the versatility of electronic devices, and also enrich the optionalness of electronic device materials.
The above work was supported by the National Natural Science Foundation of China (21571039) and the Chinese Academy of Sciences.
National Nano Center makes progress in research on non-silicon based nanoelectronic devices
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