气候变化领域集成服务门户(CCPortal): A near-infrared non-fullerene electron acceptor for high performance polymer solar cells

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DOI	10.1039/c7ee00844a
	A near-infrared non-fullerene electron acceptor for high performance polymer solar cells
	Li Y.; Zhong L.; Gautam B.; Bin H.-J.; Lin J.-D.; Wu F.-P.; Zhang Z.; Jiang Z.-Q.; Zhang Z.-G.; Gundogdu K.; Li Y.; Liao L.-S.
发表日期	2017
ISSN	17545692
起始页码	1610
结束页码	1620
卷号	10 期号:7
英文摘要	Low-bandgap polymers/molecules are an interesting family of semiconductor materials, and have enabled many recent exciting breakthroughs in the field of organic electronics, especially for organic photovoltaics (OPVs). Here, such a low-bandgap (1.43 eV) non-fullerene electron acceptor (BT-IC) bearing a fused 7-heterocyclic ring with absorption edge extending to the near-infrared (NIR) region was specially designed and synthesized. Benefitted from its NIR light harvesting, high performance OPVs were fabricated with medium bandgap polymers (J61 and J71) as donors, showing power conversion efficiencies of 9.6% with J61 and 10.5% with J71 along with extremely low energy loss (0.56 eV for J61 and 0.53 eV for J71). Interestingly, femtosecond transient absorption spectroscopy studies on both systems show that efficient charge generation was observed despite the fact that the highest occupied molecular orbital (HOMO)-HOMO offset (ΔEH) in the blends was as low as 0.10 eV, suggesting that such a small ΔEH is not a crucial limitation in realizing high performance of NIR non-fullerene based OPVs. Our results indicated that BT-IC is an interesting NIR non-fullerene acceptor with great potential application in tandem/multi-junction, semitransparent, and ternary blend solar cells. © The Royal Society of Chemistry 2017.
英文关键词	Absorption spectroscopy; Energy dissipation; Energy gap; Fullerenes; Infrared devices; Integrated circuits; Molecular orbitals; Polymer solar cells; Polymers; Semiconductor materials; Synthesis (chemical); Femtosecond transient absorption spectroscopy; High performance Polymer solar cells; Highest occupied molecular orbital; Low bandgap polymers; Near infrared region; Organic electronics; Organic photovoltaics; Power conversion efficiencies; Solar cells; efficiency measurement; fuel cell; fullerene; near infrared; performance assessment; photovoltaic system; polymer; superconductivity
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/190447
作者单位	Jiangsu Key Laboratory for Carbon-Based Functional Materials and Devices, Institute of Functional Nano and Soft Materials (FUNSOM), Soochow University, Suzhou, 215123, China; Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Department of Physics, Organic and Carbon Electronics Laboratory, North Carolina State University, Raleigh, NC 27695, United States; Laboratory of Advanced Optoelectronic Materials, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, China
推荐引用方式 GB/T 7714	Li Y.,Zhong L.,Gautam B.,et al. A near-infrared non-fullerene electron acceptor for high performance polymer solar cells[J],2017,10(7).
APA	Li Y..,Zhong L..,Gautam B..,Bin H.-J..,Lin J.-D..,...&Liao L.-S..(2017).A near-infrared non-fullerene electron acceptor for high performance polymer solar cells.Energy & Environmental Science,10(7).
MLA	Li Y.,et al."A near-infrared non-fullerene electron acceptor for high performance polymer solar cells".Energy & Environmental Science 10.7(2017).