Mahmood Javeed, Lee Eun Kwang, Jung Minbok, Shin Dongbin, Jeon In-Yup, Jung Sun-Min, Choi Hyun-Jung, Seo Jeong-Min, Bae Seo-Yoon, Sohn So-Dam, Park Noejung, Oh Joon Hak, Shin Hyung-Joon, Baek Jong-Beom
School of Energy and Chemical Engineering/Low-Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 100 Banyeon, Ulsan 689-798, South Korea.
1] School of Energy and Chemical Engineering/Low-Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 100 Banyeon, Ulsan 689-798, South Korea [2] Department of Chemical Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam, Pohang 790-784, South Korea.
Nat Commun. 2015 Mar 6;6:6486. doi: 10.1038/ncomms7486.
Recent graphene research has triggered enormous interest in new two-dimensional ordered crystals constructed by the inclusion of elements other than carbon for bandgap opening. The design of new multifunctional two-dimensional materials with proper bandgap has become an important challenge. Here we report a layered two-dimensional network structure that possesses evenly distributed holes and nitrogen atoms and a C2N stoichiometry in its basal plane. The two-dimensional structure can be efficiently synthesized via a simple wet-chemical reaction and confirmed with various characterization techniques, including scanning tunnelling microscopy. Furthermore, a field-effect transistor device fabricated using the material exhibits an on/off ratio of 10(7), with calculated and experimental bandgaps of approximately 1.70 and 1.96 eV, respectively. In view of the simplicity of the production method and the advantages of the solution processability, the C2N-h2D crystal has potential for use in practical applications.
近期的石墨烯研究引发了人们对通过引入除碳以外的元素来打开带隙而构建的新型二维有序晶体的极大兴趣。设计具有合适带隙的新型多功能二维材料已成为一项重大挑战。在此，我们报道了一种层状二维网络结构，其在基面中具有均匀分布的孔洞和氮原子，且化学计量比为C2N。这种二维结构可通过简单的湿化学反应高效合成，并通过包括扫描隧道显微镜在内的各种表征技术得以证实。此外，使用该材料制造的场效应晶体管器件的开/关比为10(7)，计算得到的带隙和实验测得的带隙分别约为1.70和1.96电子伏特。鉴于生产方法的简便性以及溶液可加工性的优点，C2N-h2D晶体在实际应用中具有潜力。
