Climate Change Data Portal
DOI | 10.1039/c7ee01387f |
Isolating and quantifying the impact of domain purity on the performance of bulk heterojunction solar cells | |
Huang W.; Gann E.; Chandrasekaran N.; Thomsen L.; Prasad S.K.K.; Hodgkiss J.M.; Kabra D.; Cheng Y.-B.; McNeill C.R. | |
发表日期 | 2017 |
ISSN | 17545692 |
起始页码 | 1843 |
结束页码 | 1853 |
卷号 | 10期号:8 |
英文摘要 | In solution-processed organic bulk heterojunction (BHJ) solar cells, the purity of the phase-separated domains is known to play an important role in determining device function. While the effects of domain purity have been investigated by tuning of the BHJ morphology, such tuning typically results in several parameters (for example domain size and crystallinity) being varied at once. Here we show that by varying the time between spin-coating and the application of an anti-solvent treatment, the domain purity of the polymer-rich phase in PBDTTT-EFT:PC71BM blends can be tuned while keeping other morphological parameters constant. This unique approach enables the effect of domain purity on device function to be isolated and quantified. Over the purity range explored, solar cell power conversion efficiency is observed to monotonically increase from 7.2% to 9.6% with increasing domain purity, with the cell fill factor most affected by changes in domain purity. Employing transient photovoltage measurements we find that purer phases result in a reduction in the rate constant of bimolecular recombination. A more thorough treatment is also presented on the relationship between the total scattering intensity (derived from resonant soft X-ray scattering measurements) and domain purity. In particular it is shown that domain purity does not scale linearly with total scattering intensity requiring an initial estimate of absolute domain composition. © The Royal Society of Chemistry 2017. |
英文关键词 | Heterojunctions; Polymer blends; Rate constants; X ray scattering; Bimolecular recombination; Bulk heterojunction solar cells; Domain composition; Initial estimate; Morphological parameters; Organic bulk heterojunctions; Solution-processed; Transient photovoltage measurements; Solar cells |
语种 | 英语 |
来源期刊 | Energy & Environmental Science |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/190437 |
作者单位 | Department of Materials Science and Engineering, Monash University, Wellington Road, Clayton, VIC 3800, Australia; Australian Synchrotron, 800 Blackburn Road, Clayton, VIC 3168, Australia; IITB-Monash Research Academy, IIT Bombay, Mumbai, 400076, India; Department of Physics, Indian Institute of Technology Bombay, Powai, Mumbai, 400076, India; MacDiarmid Institute for Advanced Materials and Nanotechnology, School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, 6140, New Zealand; Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg, MD 20899, United States |
推荐引用方式 GB/T 7714 | Huang W.,Gann E.,Chandrasekaran N.,et al. Isolating and quantifying the impact of domain purity on the performance of bulk heterojunction solar cells[J],2017,10(8). |
APA | Huang W..,Gann E..,Chandrasekaran N..,Thomsen L..,Prasad S.K.K..,...&McNeill C.R..(2017).Isolating and quantifying the impact of domain purity on the performance of bulk heterojunction solar cells.Energy & Environmental Science,10(8). |
MLA | Huang W.,et al."Isolating and quantifying the impact of domain purity on the performance of bulk heterojunction solar cells".Energy & Environmental Science 10.8(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。