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DOI | 10.1038/s41467-018-05460-6 |
Mixed-quantum-dot solar cells | |
Yang, Zhenyu1; Fan, James Z.1; Proppe, Andrew H.1,2; de Arquer, F. Pelayo Garcia1; Rossouw, David3; Voznyy, Oleksandr1; Lan, Xinzheng1; Liu, Min1; Walters, Grant1; Quintero-Bermudez, Rafael1; Sun, Bin1; Hoogland, Sjoerd1; Botton, Gianluigi A.3; Kelley, Shana O.2; Sargent, Edward H.1 | |
2017-11-06 | |
发表期刊 | NATURE COMMUNICATIONS |
ISSN | 2041-1723 |
出版年 | 2017 |
卷号 | 8 |
文章类型 | Article |
语种 | 英语 |
国家 | Canada |
英文摘要 | Colloidal quantum dots are emerging solution-processed materials for large-scale and low-cost photovoltaics. The recent advent of quantum dot inks has overcome the prior need for solid-state exchanges that previously added cost, complexity, and morphological disruption to the quantum dot solid. Unfortunately, these inks remain limited by the photocarrier diffusion length. Here we devise a strategy based on n-and p-type ligands that judiciously shifts the quantum dot band alignment. It leads to ink-based materials that retain the independent surface functionalization of quantum dots, and it creates distinguishable donor and acceptor domains for bulk heterojunctions. Interdot carrier transfer and exciton dissociation studies confirm efficient charge separation at the nanoscale interfaces between the two classes of quantum dots. We fabricate the first mixed-quantum-dot solar cells and achieve a power conversion of 10.4%, which surpasses the performance of previously reported bulk heterojunction quantum dot devices fully two-fold, indicating the potential of the mixed-quantum-dot approach. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000414422100010 |
WOS关键词 | BULK NANO-HETEROJUNCTIONS ; COLLOIDAL NANOCRYSTALS ; LIGAND-EXCHANGE ; SOLIDS ; PHOTOVOLTAICS ; STATE ; PBSE |
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/203907 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Toronto, Dept Elect & Comp Engn, 10 Kings Coll Rd, Toronto, ON M5S 3G4, Canada; 2.Univ Toronto, Dept Chem, 80 St George St, Toronto, ON M5S 3G4, Canada; 3.McMaster Univ, Dept Mat Sci & Engn, Hamilton, ON L8S 4M1, Canada |
推荐引用方式 GB/T 7714 | Yang, Zhenyu,Fan, James Z.,Proppe, Andrew H.,et al. Mixed-quantum-dot solar cells[J]. NATURE COMMUNICATIONS,2017,8. |
APA | Yang, Zhenyu.,Fan, James Z..,Proppe, Andrew H..,de Arquer, F. Pelayo Garcia.,Rossouw, David.,...&Sargent, Edward H..(2017).Mixed-quantum-dot solar cells.NATURE COMMUNICATIONS,8. |
MLA | Yang, Zhenyu,et al."Mixed-quantum-dot solar cells".NATURE COMMUNICATIONS 8(2017). |
条目包含的文件 | 条目无相关文件。 |
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