气候变化领域集成服务门户(CCPortal): Bifacial stamping for high efficiency perovskite solar cells

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DOI	10.1039/c8ee02730g
	Bifacial stamping for high efficiency perovskite solar cells
	Zhang Y.; Kim S.-G.; Lee D.; Shin H.; Park N.-G.
发表日期	2019
ISSN	17545692
起始页码	308
结束页码	321
卷号	12 期号:1
英文摘要	We report a novel approach for a fast phase transition of FAPbI 3 (FA = formamidinium) at low-temperature and the effective removal of interfacial recombination in MAPbI 3 (MA = methylammonium). This method also allows for printing (patterning) of the perovskite on a desired area. The pre-annealed MAPbI 3 and δ-phase FAPbI 3 films were prepared by spin-coating DMSO and a polar aprotic solvent admixed precursor solution at 65 °C and 100 °C for about 1 min, respectively, to form adduct films containing DMSO. Two films were sandwiched without pressure by a method called bifacial stamping, and annealed at 100 °C for 9 min, which resulted in complete δ → α phase transition of FAPbI 3 and led to a power conversion efficiency (PCE) of 18.34%. The stamped MAPbI 3 demonstrated a PCE of 20.18% that was much higher than the conventionally annealed MAPbI 3 (~17.4%) mainly due to a much higher fill factor and open-circuit voltage. Optical and structural studies revealed that DMSO-mediated ion exchange plays a vital role in the phase transition of FAPbI 3 and the surface modification of MAPbI 3 . Theoretical calculation results further support the role of DMSO in the phase transition at low temperature. Stamping was applied to EAPbI 3 (EA = ethylammonium), where photoinactive yellow EAPbI 3 changed to photoactive EAPbI 3 with a PCE of 13.02% after stamping with MAPbI 3 . The DMSO-mediated EA/MA ion exchange reaction during the stamping process created a new layer having a gradient solid solution of EAPbI 3 and MAPbI 3 , which was responsible for the abnormally high PCE of the EAPbI 3 based perovskite solar cell. Facilitated ion transport by a Lewis base (such as DMSO) reservoir in the perovskite adduct film is suggested to be involved in the bifacial stamping procedure. © 2019 The Royal Society of Chemistry.
英文关键词	Annealing; Efficiency; Ion exchange; Ions; Open circuit voltage; Perovskite; Solar cells; Stamping; Surface treatment; Temperature; Effective removals; Ion exchange reactions; Low temperatures; Polar aprotic solvent; Power conversion efficiencies; Precursor solutions; Structural studies; Theoretical calculations; Perovskite solar cells; energy efficiency; fuel cell; ion exchange; perovskite; phase transition; solid solution; solvent
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/190008
作者单位	School of Chemical Engineering, Sungkyunkwan University, Suwon, 440-746, South Korea; Department of Materials Science and Engineering, Division of Advanced Materials Science, Pohang University of Science and Technology (POSTECH), Pohang, 37673, South Korea; Department of Energy Science, Sungkyunkwan University, Suwon, 440-746, South Korea
推荐引用方式 GB/T 7714	Zhang Y.,Kim S.-G.,Lee D.,et al. Bifacial stamping for high efficiency perovskite solar cells[J],2019,12(1).
APA	Zhang Y.,Kim S.-G.,Lee D.,Shin H.,&Park N.-G..(2019).Bifacial stamping for high efficiency perovskite solar cells.Energy & Environmental Science,12(1).
MLA	Zhang Y.,et al."Bifacial stamping for high efficiency perovskite solar cells".Energy & Environmental Science 12.1(2019).