https://scholars.lib.ntu.edu.tw/handle/123456789/491294
標題: | Sunlight-activated graphene-heterostructure transparent cathodes: Enabling high-performance n-graphene/p-Si Schottky junction photovoltaics | 作者: | Ho, P.-H. Lee, W.-C. Liou, Y.-T. Chiu, Y.-P. Shih, Y.-S. Chen, C.-C. Su, P.-Y. Li, M.-K. Chen, H.-L. Liang, C.-T. CHI-TE LIANG YA-PING CHIU CHUN-WEI CHEN HSUEN-LI CHEN |
公開日期: | 2015 | 卷: | 8 | 期: | 7 | 起(迄)頁: | 2085-2092 | 來源出版物: | Energy and Environmental Science | 摘要: | Compared to widely-reported graphene-based anodes, the task of obtaining a stable graphene-based cathode is generally more difficult to achieve because n-type graphene devices have very limited thermal and chemical stabilities, and are usually sensitive to the influence of the ambient environment. This work developed a novel "sunlight-activated" graphene-heterostructure transparent electrode in which photogenerated charges from a light-absorbing material are transferred to graphene, resulting in the modulation of electrical properties of the graphene transparent electrode caused by a strong light-matter interaction at graphene-heterostructure interfaces. A photoactive graphene/TiOx-heterostructure transparent cathode was used to fabricate an n-graphene/p-Si Schottky junction solar cell, achieving a record-high power conversion efficiency (>10%). The photoactive graphene-heterostructure transparent electrode, which exhibits excellent tunable electrical properties under sunlight illumination, has great potential for use in the future development of graphene-based photovoltaics and optoelectronics. © 2015 The Royal Society of Chemistry. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/491294 | DOI: | 10.1039/c5ee00548e | SDG/關鍵字: | Cathodes; Graphene devices; Solar cells; Transparent electrodes; Absorbing materials; Ambient environment; Heterostructure interfaces; High power conversion; Light-matter interactions; Photogenerated charge; Thermal and chemical stabilities; Transparent cathode; Graphene; alkene; electrical property; electrode; energy efficiency; fuel cell; performance assessment; photovoltaic system; stabilization |
顯示於: | 材料科學與工程學系 |
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