通过引导方法调整高可复制性和高效的矿太阳能电池的分子相互作用
Jin-Wook Lee1, Zhenghong Dai1, Changsoo Lee2
1Department of Materials Science and Engineering and California NanoSystems Institute , University of California , Los Angeles , California 90095 , United States.
Journal of the American Chemical Society
|May 4, 2018
概括
研究人员开发了一种用于均甲 (FA) 矿薄膜的新增方法. 用NMP取代DMSO产生稳定的中间体,提高矿太阳能电池的效率超过20%.
科学领域:
- 材料科学
- 可再生能源
- 太阳能发电
背景情况:
- 易斯酸添加方法对于均的矿薄膜制造至关重要.
- 它与基于formamidinium (FA) 的矿的不兼容性限制了光伏性能和稳定性.
研究的目的:
- 开发一种高效且可重复的方法,以使用 adduct 方法制造高度均的 FAPbI3 薄膜.
- 克服基于FA的矿现有方法的局限性.
主要方法:
- 用N-methyl-2-pyrrolidone (NMP) 代替二甲基硫化物 (DMSO) 作为易斯基.
- 形成一个稳定的中导相 (FAI·PbI2·NMP).
- 进行红外和计算分析以了解分子相互作用.
主要成果:
- 制造均且没有孔的FAPbI3薄膜.
- 矿太阳能电池的演示,最高功率转换效率 (PCE) 超过20% (稳定PCE为19.34%).
- 平均PCE达到18.83±0.73%.
结论:
- 由于更强的相互作用,NMP与FA形成了比DMSO更稳定的附加物.
- 建立了选择适合矿膜形成的易斯基的标准.
- 这种新方法显著提高了基于FA的矿太阳能电池的性能和稳定性.
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