New Insights into the Correlation between Morphology, Excited State Dynamics, and Device Performance of Small Molecule Organic Solar Cells
Long, GK; Wu, B; Solanki, A; Yang, X; Kan, B; Liu, XF; Wu, DC; Xu, Z; Wu, WR; Jeng, US; Lin, JY; Li, MM; Wang, YC; Wan, XJ; Sum, TC; Chen, YS; Chen, YS (reprint author), Nankai Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, State Key Lab & Inst Elementoorgan Chem, Sch Mat Sci & Engn, Tianjin 300071, Peoples R China.; Sum, TC (reprint author), Nanyang Technol Univ, SPMS, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore.
2016
发表期刊Advanced Energy Materials
ISSN1614-6832
卷号6期号:22页码:-
文章类型期刊论文
摘要Morphology plays a vital role on the performance of organic photovoltaics. However, our understanding of the morphology-performance relationships for organic photovoltaics remains lacking. Specifically, it is still an open question why some bulk-heterojunction blends exhibit electric field dependent J-V curves, while others do not. Through detailed fs-s transient absorption spectroscopy and morphology studies on the representative bulk-heterojunction type small molecule (SM) donor system, a picture of different J-V behaviors from morphology aspects and excited dynamics is revealed. Our findings reveal that amorphous morphology in the lack of percolated pathways leads to the formation of strongly bound charge transfer states (CTSs), which accounts for about one third of the photoexcited species. Therefore, field-dependent J-V curves are obtained as these CTSs mainly undergo geminate recombination or function as interfacial traps for nongeminate recombination. On the other hand, the CTSs are totally suppressed after post-treatment owning to the formation of bicontinuous morphology, which results in very high efficiencies from exciton generation, diffusion, dissociation to charge extraction, thus contributes to field-independent J-V characteristics. The insights gained in this work provide the effective guidelines to further optimize the performance of bulk-heterojunction type SM-organic photovoltaics through judicious morphology control and engineering.
关键词Charge Transfer State Optical Simulation Organic Photovoltaics Small Molecules Transient Absorption Spectra
DOI10.1002/aenm.201600961
收录类别SCI
语种英语
WOS记录号WOS:000388993100005
引用统计
被引频次:4[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/26585
专题中科院上海应用物理研究所2011-2018年
通讯作者Chen, YS (reprint author), Nankai Univ, Collaborat Innovat Ctr Chem Sci & Engn Tianjin, State Key Lab & Inst Elementoorgan Chem, Sch Mat Sci & Engn, Tianjin 300071, Peoples R China.; Sum, TC (reprint author), Nanyang Technol Univ, SPMS, Div Phys & Appl Phys, 21 Nanyang Link, Singapore 637371, Singapore.
推荐引用方式
GB/T 7714
Long, GK,Wu, B,Solanki, A,et al. New Insights into the Correlation between Morphology, Excited State Dynamics, and Device Performance of Small Molecule Organic Solar Cells[J]. Advanced Energy Materials,2016,6(22):-.
APA Long, GK.,Wu, B.,Solanki, A.,Yang, X.,Kan, B.,...&Sum, TC .(2016).New Insights into the Correlation between Morphology, Excited State Dynamics, and Device Performance of Small Molecule Organic Solar Cells.Advanced Energy Materials,6(22),-.
MLA Long, GK,et al."New Insights into the Correlation between Morphology, Excited State Dynamics, and Device Performance of Small Molecule Organic Solar Cells".Advanced Energy Materials 6.22(2016):-.
条目包含的文件
文件名称/大小 文献类型 版本类型 开放类型 使用许可
New Insights into th(4078KB)期刊论文作者接受稿开放获取CC BY-NC-SA请求全文
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Long, GK]的文章
[Wu, B]的文章
[Solanki, A]的文章
百度学术
百度学术中相似的文章
[Long, GK]的文章
[Wu, B]的文章
[Solanki, A]的文章
必应学术
必应学术中相似的文章
[Long, GK]的文章
[Wu, B]的文章
[Solanki, A]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

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。