All carbon materials pn diode
| Autor: | Jiahui Guo, Wenxia Yuan, Liu Yang, Xing Zhao, Meng-Yao Li, Yong Yan, Yuchun Zhang, Tiehu Li, Xiaojing Feng, Fengxiang Qie |
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| Rok vydání: | 2017 |
| Předmět: |
Materials science
Science General Physics and Astronomy 02 engineering and technology Carbon nanotube 010402 general chemistry 01 natural sciences General Biochemistry Genetics and Molecular Biology law.invention law lcsh:Science Quantum tunnelling p–n diode Diode Multidisciplinary business.industry Graphene Transistor General Chemistry 021001 nanoscience & nanotechnology 0104 chemical sciences Semiconductor Optoelectronics lcsh:Q 0210 nano-technology business p–n junction |
| Zdroj: | Nature Communications, Vol 9, Iss 1, Pp 1-7 (2018) |
| ISSN: | 2041-1723 |
| Popis: | Semiconductor pn junctions are elementary building blocks of many electronic devices such as transistors, solar cells, photodetectors, and integrated circuits. Due to the absence of an energy bandgap and massless Dirac-like behaviour of charge carriers, graphene pn junction with electrical current rectification characteristics is hardly achieved. Here we show a graphene pn junction diode can be made exclusively from carbon materials by laminating two layers of positively and negatively charged graphene oxides. As the interdiffusion of oppositely charged mobile counterions, a built-in potential is created to rectify the current by changing the tunnelling probability of electrons across the junction. This graphene diode is semi-transparent, can perform simple logic operations, and since it has carbon nanotubes electrodes, we demonstrate an all carbon materials pn diode. We expect this graphene diode will expand material choices and provide functionalities (e.g. grafting recognition units on graphene oxides) beyond that of traditional semiconductor pn junctions. |
| Databáze: | OpenAIRE |
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