气候变化领域集成服务门户(CCPortal): Visualizing morphological principles for efficient photocurrent generation in organic non-fullerene acceptor blends

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DOI	10.1039/c9ee03535d
	Visualizing morphological principles for efficient photocurrent generation in organic non-fullerene acceptor blends
	Köntges W.; Perkhun P.; Kammerer J.; Alkarsifi R.; Würfel U.; Margeat O.; Videlot-Ackermann C.; Simon J.-J.; Schröder R.R.; Ackermann J.; Pfannmöller M.
发表日期	2020
ISSN	17545692
起始页码	1259
结束页码	1268
卷号	13 期号:4
英文摘要	The efficiency of organic solar cells with donor polymers and non-fullerene acceptors depends on a complex morphology. Similar chemical and electronic structures impede generating in-depth insights in morphological details. We visualise molecular arrangements and the nanomorphology in PBDB-T:ITIC blends by correlating transmission electron micrographs and material distribution maps. Material phases are identified by machine learning on hyperspectral data from electron spectroscopic imaging. We observe a specific polymorph of ITIC after thermal annealing. During annealing, enhanced by the presence of additives, PBDB-T acts as nucleation site for ITIC due to strong π-π-interactions of the electron withdrawing groups of both molecules. This leads to efficient charge transport paths in ITIC phases with direct π-π-contact to PBDB-T at the interface. We conclude that π-π-stacking between donor and acceptor molecules facilitates charge carrier generation within mixed interface regions. © The Royal Society of Chemistry.
英文关键词	Additives; Electronic structure; Fullerenes; Hyperspectral imaging; Molecules; Organic polymers; Charge carrier generation; Donor and acceptor; Electron spectroscopic imaging; Electron withdrawing group; Material distribution; Molecular arrangements; Photocurrent generations; Transmission electron micrograph; Organic solar cells; data set; detection method; fuel cell; fullerene; imaging method; machine learning
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/189655
作者单位	Cam, Centre for Advanced Materials, Heidelberg University, Heidelberg, Germany; Aix Marseille Univ, Cnrs, CINaM, Marseille, France; 3DMM2O, Cluster of Excellence (EXC-2082/1-390761711) and CAM-Centre for Advanced Materials, Heidelberg University, Heidelberg, Germany; Fraunhofer Institute for Solar Energy Systems Ise, Freiburg Materials Research Center Fmf, University of Freiburg, Freiburg, Germany; Aix Marseille Univ, Université de Toulon, Cnrs, IM2NP, Marseille, France; 3DMM2O, Cluster of Excellence (EXC-2082/1-390761711) and Cryo Electron Microscopy, BioQuant, University Heidelberg, University Hospital, Heidelberg, Germany
推荐引用方式 GB/T 7714	Köntges W.,Perkhun P.,Kammerer J.,et al. Visualizing morphological principles for efficient photocurrent generation in organic non-fullerene acceptor blends[J],2020,13(4).
APA	Köntges W..,Perkhun P..,Kammerer J..,Alkarsifi R..,Würfel U..,...&Pfannmöller M..(2020).Visualizing morphological principles for efficient photocurrent generation in organic non-fullerene acceptor blends.Energy & Environmental Science,13(4).
MLA	Köntges W.,et al."Visualizing morphological principles for efficient photocurrent generation in organic non-fullerene acceptor blends".Energy & Environmental Science 13.4(2020).