气候变化领域集成服务门户(CCPortal): Rapid route to efficient, scalable, and robust perovskite photovoltaics in air

CCPortal

DOI	10.1039/c8ee01065j
	Rapid route to efficient, scalable, and robust perovskite photovoltaics in air
	Hilt F.; Hovish M.Q.; Rolston N.; Brüning K.; Tassone C.J.; Dauskardt R.H.
发表日期	2018
ISSN	17545692
起始页码	2102
结束页码	2113
卷号	11 期号:8
英文摘要	We demonstrate a scalable atmospheric plasma route to rapidly form efficient and mechanically robust photoactive metal halide perovskite films in open air at linear deposition rates exceeding 4 cm s-1. Our plasma process uses clean dry air to produce a combination of reactive energetic species (ions, radicals, metastables, and photons) and convective thermal energy to rapidly convert the perovskite precursor solution after spray-coating. Such high energy species dissociate the precursor and superheat the solvent, quickly and efficiently curing the perovskite film. Synchrotron X-ray radiation enabled in situ wide angle X-ray scattering (WAXS) measurements with high time resolution. The ultrafast crystallization kinetics are governed by rapid nucleation and growth during the plasma exposure, followed by continued grain growth during cooling. We deposit pinhole-free, robust CH3NH3PbI3 films with a ten-fold increase in fracture toughness, a key metric for reliability. Planar devices exhibited remarkably consistent performance with 15.7% power conversion efficiency (PCE) without hysteresis and an improved open-circuit voltage (VOC). This excellent performance is attributed to lower defect densities, as measured by external quantum efficiency, steady-state and time-resolved photoluminescence. Large-area devices were made with a strip of 10 samples, and a 13.4% average PCE was measured on a total of 2.4 cm2 electrode area. © 2018 The Royal Society of Chemistry.
英文关键词	Crystallization kinetics; Deposition rates; Fracture toughness; Grain growth; Growth kinetics; Metal halides; Open circuit voltage; Quantum theory; X ray scattering; Consistent performance; External quantum efficiency; High-time resolution; Mechanically robust; Power conversion efficiencies; Precursor solutions; Synchrotron x-ray radiation; Time-resolved photoluminescence; Perovskite; coating; cooling; equipment; hysteresis; performance assessment; perovskite; photovoltaic system; plasma; solvent; supercooling; X-ray
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/190171
作者单位	Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, United States; Department of Applied Physics, Stanford University, Stanford, CA 94305, United States; Stanford Synchrotron Radiation Lightsource (SSRL), SLAC National Accelerator Laboratory, Menlo Park, CA 94025, United States
推荐引用方式 GB/T 7714	Hilt F.,Hovish M.Q.,Rolston N.,et al. Rapid route to efficient, scalable, and robust perovskite photovoltaics in air[J],2018,11(8).
APA	Hilt F.,Hovish M.Q.,Rolston N.,Brüning K.,Tassone C.J.,&Dauskardt R.H..(2018).Rapid route to efficient, scalable, and robust perovskite photovoltaics in air.Energy & Environmental Science,11(8).
MLA	Hilt F.,et al."Rapid route to efficient, scalable, and robust perovskite photovoltaics in air".Energy & Environmental Science 11.8(2018).