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DOI | 10.1038/s41467-019-12618-3 |
Tuning colloidal quantum dot band edge positions through solution-phase surface chemistry modification | |
Kroupa, Daniel M.1,2; Voros, Marton3,4; Brawand, Nicholas P.4; McNichols, Brett W.5,6; Miller, Elisa M.1; Gu, Jing1; Nozik, Arthur J.1,2; Sellinger, Alan1,5,6; Galli, Giulia3,4; Beard, Matthew C.1 | |
2019-10-18 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Band edge positions of semiconductors determine their functionality in many optoelectronic applications such as photovoltaics, photoelectrochemical cells and light emitting diodes. Here we show that band edge positions of lead sulfide (PbS) colloidal semiconductor nanocrystals, specifically quantum dots (QDs), can be tuned over 2.0 eV through surface chemistry modification. We achieved this remarkable control through the development of simple, robust and scalable solution-phase ligand exchange methods, which completely replace native ligands with functionalized cinnamate ligands, allowing for well-defined, highly tunable chemical systems. By combining experiments and ab initio simulations, we establish clear relationships between QD surface chemistry and the band edge positions of ligand/QD hybrid systems. We find that in addition to ligand dipole, inter-QD ligand shell inter-digitization contributes to the band edge shifts. We expect that our established relationships and principles can help guide future optimization of functional organic/inorganic hybrid nanostructures for diverse optoelectronic applications. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401347900001 |
WOS关键词 | SOLAR-CELLS ; THIN-FILMS ; SEMICONDUCTOR NANOCRYSTALS ; LIGAND-EXCHANGE ; SIZE DEPENDENCE ; PBS ; ELECTRON ; STATE |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204602 |
专题 | 资源环境科学 |
作者单位 | 1.Natl Renewable Energy Lab, Chem & Nanosci Ctr, Golden, CO 80401 USA; 2.Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA; 3.Argonne Natl Lab, Div Mat Sci, Lemont, IL 60439 USA; 4.Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA; 5.Colorado Sch Mines, Dept Chem, Golden, CO 80401 USA; 6.Colorado Sch Mines, Mat Sci Program, Golden, CO 80401 USA |
推荐引用方式 GB/T 7714 | Kroupa, Daniel M.,Voros, Marton,Brawand, Nicholas P.,et al. Tuning colloidal quantum dot band edge positions through solution-phase surface chemistry modification[J]. NATURE COMMUNICATIONS,2019,8. |
APA | Kroupa, Daniel M..,Voros, Marton.,Brawand, Nicholas P..,McNichols, Brett W..,Miller, Elisa M..,...&Beard, Matthew C..(2019).Tuning colloidal quantum dot band edge positions through solution-phase surface chemistry modification.NATURE COMMUNICATIONS,8. |
MLA | Kroupa, Daniel M.,et al."Tuning colloidal quantum dot band edge positions through solution-phase surface chemistry modification".NATURE COMMUNICATIONS 8(2019). |
条目包含的文件 | 条目无相关文件。 |
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