Do LED+ graphene really match? The industry big Cafe looks like this

Graphene as a semi gold property (semi-metal) material, the internal carrier concentration is up to 1013 /cm3, and because of the special band structure of Graphene, the carrier can be adjusted continuously between the electron and the hole, so that Graphene presents the N and P type characteristics. Because of the highly symmetric lattice structure, the mobility of the internal carrier of Graphene is 15000cm2/ (VS), and the experiment shows that the mobility is almost irrelevant to the temperature. It shows that the migration rate of Graphene is still mainly influenced by impurities or defects at room temperature. By improving the crystal quality, the carrier flow can be improved. The migration rate of the child (up to 100000cm2/ (VS)). These features lay the foundation for the application of Graphene in the future electronics. Therefore, the most important application field of graphene is the combination of traditional micromachining technology, and all kinds of devices (p-n junction, field effect transistor, single molecule detector, etc.) have been implemented by experiments, so that Graphene shows great potential of application. Although Graphene has a wide range of applications in microelectronics, nanoelectronics, spintronics, energy storage and so on, the acquisition of a large number of high quality Graphene samples is still a problem perplexing people. The Graphene obtained by the micromechanical cleavage method strongly depends on the graphite used. The maximum area can be obtained at present is only micrometer, and it is very inefficient. It is difficult to use in the industry. The Graphene obtained by the decomposition of silicon carbide has a large number of defects, and the Graphene of the transition metal surface is not easy to separate and so on. The problem is put forward for the industrialization of Graphene. The preparation methods of Graphene still need to be further improved, and large quantities of production may be heavily bramble. About graphene and LED, after six years ago, graphene won the Nobel prize, many people doing LED want to use graphene in LED chips and heat dissipation and have written many patents because of its excellent thermal and electrical conductivity, and of course its high transparency penetration, so I see a lot about graphene. LED patents are transparent conductive layer and heat dissipation technology. Graphene may be a very good thermal material, but it is very wasteful at LED with current technology and cost, and it is also a waste at present on the transparent conductive layer of the chip. Unless there is a breakthrough in production technology, the cost of graphene coating can be reduced to the same as that of ITO, which may be due to its excellent properties. It is possible to replace the present process. The same is true for LED heat dissipation materials. I think LED chips are more likely to be used faster. (Ye Guoguang, vice general manager of Guangdong De Li optoelectronic Co., Ltd.)