气候变化领域集成服务门户(CCPortal): Ultrafast Channel II process induced by a 3-D texture with enhanced acceptor order ranges for high-performance non-fullerene polymer solar cells

CCPortal

DOI	10.1039/c8ee01546e
	Ultrafast Channel II process induced by a 3-D texture with enhanced acceptor order ranges for high-performance non-fullerene polymer solar cells
	Chen S.; Lee S.M.; Xu J.; Lee J.; Lee K.C.; Hou T.; Yang Y.; Jeong M.; Lee B.; Cho Y.; Jung S.; Oh J.; Zhang Z.-G.; Zhang C.; Xiao M.; Li Y.; Yang C.
发表日期	2018
ISSN	17545692
起始页码	2569
结束页码	2580
卷号	11 期号:9
英文摘要	To achieve efficient non-fullerene polymer solar cells (NF-PSCs), an in-depth understanding of the key properties that govern the power output is necessary. Herein, three trialkylsilyl substituted benzodithiophene-based polymer donors (PJ1, PJ2, and PJ3) were synthesized with fine-tuning of the highest occupied molecular orbital (HOMO)/lowest unoccupied molecular orbital (LUMO) and optical absorption. Using the polymer series paired with absorption-complementary small molecular acceptors (SMAs), namely, m-ITIC, IDIC, and AIDIC, we systematically studied the performance of a 3 × 3 matrix of NF-PSCs. An increasing open-circuit voltage with deepening HOMOs of the polymer donors, and the enhanced short-circuit current (JSC) and fill factor (FF) were ascribed to the well-intermixed blend morphology containing enhanced SMA order ranges with mixed face-on and edge-on orientations, the so-called 3-D texture. Such an optimal microstructure is best exemplified in the PJ2:IDIC combination, affording a highest efficiency of 12.01% with a simultaneously high JSC of 17.0 mA cm-2 and FF of 75.3%. The devices with an active layer thickness of 300 nm still maintain an impressive efficiency approaching 10% with a decent FF of 60.0%. Moreover, the Channel II process, i.e., photoinduced hole transfer through acceptor excitation, was demonstrated to be crucially important for photocurrent generation. This study highlights the importance of optimizing the trade-off between charge separation/transport and domain size to achieve high-performance NF-PSCs. © 2018 The Royal Society of Chemistry.
英文关键词	Economic and social effects; Efficiency; Fullerenes; Light absorption; Molecular orbitals; Open circuit voltage; Polymers; Solar cells; Benzodithiophene; Blend morphology; Charge separations; Highest occupied molecular orbital; In-depth understanding; Optimal microstructure; Photo-induced; Photocurrent generations; Polymer solar cells; active layer; efficiency measurement; fuel cell; microstructure; optimization; performance assessment; polymer; three-dimensional modeling
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/190137
作者单位	Department of Energy Engineering, School of Energy and Chemical Engineering, Perovtronics Research Center, Low Dimensional Carbon Materials Center, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulju-gun Ulsan, 44919, South Korea; National Laboratory of Solid State Microstructures, School of Physics, and Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing, 210093, China; Research Center for Green Fine Chemicals, Korea Research Institute of Chemical Technology, Ulsan, 44412, South Korea; Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), Nanjing, 211816, China; Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
推荐引用方式 GB/T 7714	Chen S.,Lee S.M.,Xu J.,et al. Ultrafast Channel II process induced by a 3-D texture with enhanced acceptor order ranges for high-performance non-fullerene polymer solar cells[J],2018,11(9).
APA	Chen S..,Lee S.M..,Xu J..,Lee J..,Lee K.C..,...&Yang C..(2018).Ultrafast Channel II process induced by a 3-D texture with enhanced acceptor order ranges for high-performance non-fullerene polymer solar cells.Energy & Environmental Science,11(9).
MLA	Chen S.,et al."Ultrafast Channel II process induced by a 3-D texture with enhanced acceptor order ranges for high-performance non-fullerene polymer solar cells".Energy & Environmental Science 11.9(2018).