Soochow Institute for Energy and Materials Innovations (SIEMIS), Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu Province , Soochow University , Suzhou 215006 , People's Republic of China.
Beijing Graphene Institute, Beijing 100091 , People's Republic of China.
ACS Appl Mater Interfaces. 2018 Sep 26;10(38):32622-32630. doi: 10.1021/acsami.8b11579. Epub 2018 Sep 14.
The direct synthesis of low sheet resistance graphene on glass can promote the applications of such intriguing hybrid materials in transparent electronics and energy-related fields. Chemical doping is efficient for tailoring the carrier concentration and the electronic properties of graphene that previously derived from metal substrates. Herein, we report the direct synthesis of 5 in. uniform nitrogen-doped (N-doped) graphene on the quartz glass through a designed low-pressure chemical vapor deposition (LPCVD) route. Ethanol and methylamine were selected respectively as precursor and dopant for acquiring predominantly graphitic-N-doped graphene. We reveal that by a precise control of growth temperature and thus the doping level the sheet resistance of graphene on glass can be as low as one-half that of nondoped graphene, accompanied by relative high crystal quality and transparency. Significantly, we demonstrate that this scalable, 5 in. uniform N-doped graphene glass can serve as excellent electrode materials for fabricating high performance electrochromic smart windows, featured with a much simplified device structure. This work should pave ways for the direct synthesis and application of the new type graphene-based hybrid material.
在玻璃上直接合成低面电阻的石墨烯可以促进这种引人注目的混合材料在透明电子和能源相关领域的应用。化学掺杂对于调整石墨烯的载流子浓度和电子特性非常有效，而石墨烯以前是从金属衬底中获得的。本文通过设计的低压化学气相沉积（LPCVD）方法，在石英玻璃上直接合成了 5 英寸均匀的氮掺杂（N 掺杂）石墨烯。选择乙醇和甲胺分别作为前体和掺杂剂，以获得主要为石墨氮掺杂的石墨烯。我们揭示了通过精确控制生长温度和掺杂水平，可以将玻璃上石墨烯的面电阻降低到未掺杂石墨烯的一半，同时保持相对较高的晶体质量和透明度。重要的是，我们证明了这种可扩展的、5 英寸均匀的 N 掺杂石墨烯玻璃可以作为制造高性能电致变色智能窗的优秀电极材料，其器件结构大大简化。这项工作为新型基于石墨烯的混合材料的直接合成和应用铺平了道路。
