Japanese Journal of Applied Physics ( IF 1.5 ) Pub Date : 2021-02-17 , DOI: 10.35848/1347-4065/abde2c Akira Heya , Koji Sumitomo
Nanographene synthesis, called hot mesh deposition (HMD) using pentacene molecules, H2 gas and heated W mesh, was investigated using Cu and Ni films prepared on quartz substrates. In HMD, the pentacene and H2 molecules were decomposed by the heated W mesh placed between the pentacene source and the substrate. In the case of Cu film, the peaks due to nanographene such as graphene nanoribbons (GNRs) at 1340 and 1600 cm−1 were obtained in the high atomic hydrogen density region. On the other hand, in the Ni film such peaks were obtained in the low atomic hydrogen density region. This indicates that catalysis activity of the bonding reaction between 6,13-dihydropentacene (DHP) molecules on the Ni film was stronger than that on the Cu film. In addition, the polymerization of excess DHP molecules was achieved by carbon dissolving in the Ni film via Ni3C formation. The dehydrogenation of DHP was an important factor in HMD for the GNR synthesis at low temperature around 300 C.
中文翻译:
并五苯,H 2气和加热的W网在低温下在金属膜上合成纳米石墨烯
使用在石英衬底上制备的Cu和Ni膜,研究了使用并五苯分子,H 2气体和加热的W网格的纳米石墨烯合成,称为热网格沉积(HMD)。在HMD中,并五苯和H 2分子被置于并五苯源和基底之间的加热的W网分解。在Cu膜的情况下,由于诸如石墨烯纳米带(GNR)之类的纳米石墨烯的峰在1340和1600cm -1处在高原子氢密度区域获得。另一方面,在Ni膜中,在低原子氢密度区域中获得了这样的峰。这表明Ni膜上的6,13-二氢并五苯(DHP)分子之间的键合反应的催化活性强于Cu膜。另外,过量的DHP分子的聚合通过经由Ni 3 C形成将碳溶解在Ni膜中而实现。DHP的脱氢是HMD在300°C左右低温下合成GNR的重要因素。