Granum-Like Stacking Structures with TiO2-Graphene Nanosheets for Improving Photo-electric Conversion
文献类型：期刊论文
| 作者 | Yang, Nailiang1,2,3; Zhang, Yu1; Halpert, Jonathan E.2; Zhai, Jin1; Wang, Dan2; Jiang, Lei1 |
| 刊名 | SMALL
 |
| 出版日期 | 2012-06-11 |
| 卷号 | 8期号:11页码:1762-1770 |
| 关键词 | artificial granum stacked structures TiO2 graphene photo-electric conversion charge transport |
| ISSN号 | 1613-6810 |
| 其他题名 | Small |
| 中文摘要 | Solar energy is commonly considered to be one of the most important forms of future energy production. This is due to its ability to generate essentially free power, after installation, with low environmental impact. Green plants, meanwhile, exhibit a process for light-to-charge conversion that provides a useful model for using solar radiation efficiently. Granum, the core organ in photosynthesis consists of a stack of similar to 10100 thylakoids containing pigments and electrons acceptors. Imitating the structure and function of granum, stacked structures are fabricated with TiO2/graphene nanosheets as the thylakoids unit, and their photo-electric effect is studied by varying the number of layers present in the film. The photo-electric response of the graphene composites are found to be 20 times higher than that of pure TiO2 in films with 25 units stacked. Importantly, the cathodic photocurrent changes to anodic photocurrent as the thickness increases, an important feature of efficient solar cells which is often ignored. Here graphene is proposed to perform similarly to the b6f complex in granum, by separating charges and transporting electrons through the stacked film. Using this innovation, stacked TiO2/graphene structures are now able to significantly increase photoanode thickness in solar cells without losing the ability to conduct electrons. |
| 英文摘要 | Solar energy is commonly considered to be one of the most important forms of future energy production. This is due to its ability to generate essentially free power, after installation, with low environmental impact. Green plants, meanwhile, exhibit a process for light-to-charge conversion that provides a useful model for using solar radiation efficiently. Granum, the core organ in photosynthesis consists of a stack of similar to 10100 thylakoids containing pigments and electrons acceptors. Imitating the structure and function of granum, stacked structures are fabricated with TiO2/graphene nanosheets as the thylakoids unit, and their photo-electric effect is studied by varying the number of layers present in the film. The photo-electric response of the graphene composites are found to be 20 times higher than that of pure TiO2 in films with 25 units stacked. Importantly, the cathodic photocurrent changes to anodic photocurrent as the thickness increases, an important feature of efficient solar cells which is often ignored. Here graphene is proposed to perform similarly to the b6f complex in granum, by separating charges and transporting electrons through the stacked film. Using this innovation, stacked TiO2/graphene structures are now able to significantly increase photoanode thickness in solar cells without losing the ability to conduct electrons. |
| WOS标题词 | Science & Technology ; Physical Sciences ; Technology |
| 类目[WOS] | Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter |
| 研究领域[WOS] | Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics |
| 关键词[WOS] | SENSITIZED SOLAR-CELLS ; PHOTOCATALYTIC REDUCTION ; ELECTRON-TRANSPORT ; CARBON NANOTUBES ; GRAPHENE SHEETS ; BACK-REACTION ; FILMS ; OXIDE ; FUNCTIONALIZATION ; GRAPHITE |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000304817700017 |
| 公开日期 | 2013-11-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/6355]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Beihang Univ, Sch Chem & Environm, Minist Educ, Key Lab Bioinspired Smart Interfacial Sci & Techn, Beijing 100191, Peoples R China 2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Nailiang,Zhang, Yu,Halpert, Jonathan E.,et al. Granum-Like Stacking Structures with TiO2-Graphene Nanosheets for Improving Photo-electric Conversion[J]. SMALL,2012,8(11):1762-1770. |
| APA | Yang, Nailiang,Zhang, Yu,Halpert, Jonathan E.,Zhai, Jin,Wang, Dan,&Jiang, Lei.(2012).Granum-Like Stacking Structures with TiO2-Graphene Nanosheets for Improving Photo-electric Conversion.SMALL,8(11),1762-1770. |
| MLA | Yang, Nailiang,et al."Granum-Like Stacking Structures with TiO2-Graphene Nanosheets for Improving Photo-electric Conversion".SMALL 8.11(2012):1762-1770. |
入库方式： OAI收割
来源：过程工程研究所
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