气候变化领域集成服务门户(CCPortal): Additive engineering for high-performance room-temperature-processed perovskite absorbers with micron-size grains and microsecond-range carrier lifetimes

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DOI	10.1039/c7ee02272g
	Additive engineering for high-performance room-temperature-processed perovskite absorbers with micron-size grains and microsecond-range carrier lifetimes
	Liu J.; Han Q.; Bai Y.; Du K.-Z.; Li T.; Ji D.; Zhou Y.; Cao C.; Shin D.; Ding J.; Franklin A.D.; Glass J.T.; Hu J.; Therien M.J.; Mitzi D.B.
发表日期	2017
ISSN	17545692
起始页码	2365
结束页码	2371
卷号	10 期号:11
英文摘要	Perovskite photovoltaics have attracted remarkable attention recently due to their exceptional power conversion efficiencies (PCE). State-of-the-art perovskite absorbers typically require thermal annealing steps for high film quality. However, the annealing process adds cost and reduces yield for device fabrication and may also hinder application in tandem photovoltaics and flexible/ultra-low-cost optoelectronics. Herein, we report an additive-based room-temperature process for realizing high-quality methylammonium lead iodide films with micron-sized grains (>2 μm) and microsecond-range carrier lifetimes (τ1 = 931.94 ± 89.43 ns; τ2 = 320.41 ± 43.69 ns). Solar cells employing such films demonstrate 18.22% PCE with improved current-voltage hysteresis and stability without encapsulation. Further, we reveal that room-temperature-processed perovskite film grain size strongly depends on the precursor aggregate size in the film-deposition solution and that additive-based tuning of aggregate properties enables enlarging grains to the micron scale. These results offer a new pathway for more versatile, cost-effective perovskite processing. © The Royal Society of Chemistry 2017.
英文关键词	Aggregates; Cost effectiveness; Iodine compounds; Lead compounds; Perovskite; Aggregate properties; Annealing process; Device fabrications; Lead iodide films; Perovskite films; Power conversion efficiencies; Room-temperature process; Thermal-annealing; High temperature engineering; absorption; cost analysis; efficiency measurement; encapsulation; energy efficiency; equipment; grain size; hysteresis; inorganic compound; performance assessment; perovskite; photovoltaic system; temperature effect
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/190372
作者单位	Department of Mechanical Engineering and Materials Science, Duke University, Durham, NC 27708, United States; Department of Chemistry, Duke University, Durham, NC 27708, United States; Key Laboratory of Molecular Nanostructure and Nanotechnology, Institute of Chemistry, Chinese Academy of Science, 2 North 1st Street, Zhongguancun, Beijing, 100190, China; University of Chinese Academy of Science, Beijing, 100049, China; Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708, United States
推荐引用方式 GB/T 7714	Liu J.,Han Q.,Bai Y.,et al. Additive engineering for high-performance room-temperature-processed perovskite absorbers with micron-size grains and microsecond-range carrier lifetimes[J],2017,10(11).
APA	Liu J..,Han Q..,Bai Y..,Du K.-Z..,Li T..,...&Mitzi D.B..(2017).Additive engineering for high-performance room-temperature-processed perovskite absorbers with micron-size grains and microsecond-range carrier lifetimes.Energy & Environmental Science,10(11).
MLA	Liu J.,et al."Additive engineering for high-performance room-temperature-processed perovskite absorbers with micron-size grains and microsecond-range carrier lifetimes".Energy & Environmental Science 10.11(2017).