相关实验视频
Updated: Jul 19, 2025

05:15
Flash Infrared Annealing for Perovskite Solar Cell Processing
Published on: February 3, 2021
8.0K
痕迹兴奋剂:含的疏水性易斯酸使稳定的矿太阳能电池成为可能
Junsheng Luo1,2, Fangyan Lin1, Jianxing Xia1
1National Key Laboratory of Electronic Thin Films and Integrated Devices, School of Integrated Circuit Science and Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, P. R. China.
ChemSusChem
|August 16, 2023
概括
研究人员为矿太阳能电池 (PSC) 开发了一种新的补充剂,以提高稳定性. 新的bis ((pentafluorophenyl) (Zn-FP) 剂增强了这些新兴光伏设备的运行寿命和效率.
科学领域:
- 材料科学 材料科学 材料科学
- 太阳能光伏发电是如何实现的
- 有机电子 有机电子
背景情况:
- 矿太阳能电池 (PSC) 显示高效率,但长期运行稳定性不佳,阻碍了商业化.
- 目前最先进的PSC在孔输送材料 (HTM) 中使用二三甲基硫) 胺 (Li-TFSI) 和4-三-丁二 (t-BP) 等双剂.
- 由于复杂的氧化,离子迁移和湿透性质,这些常规剂存在稳定性问题.
研究的目的:
- 为了研究 bis{pentafluorophenyl) (Zn-FP) 作为 PSC 中的多[bis{4-phenyl) {2,4,6-trimethylphenyl) 胺] (PTAA) HTM 的常规 Li-TFSI/t-BP 剂的稳定,疏水替代品.
- 评估使用新型Zn-FP剂的PSC的效率和运行稳定性.
- 为应对矿太阳能电池技术长期运行稳定的关键挑战.
主要方法:
- 合成并纳入含的有机易斯酸, bis ((pentafluorophenyl) (Zn-FP),作为PTAA HTMs中的剂.
- 使用Zn-FP合PTAA HTM.制造的PSC设备.
- 在模拟太阳光照明下测试设备性能,包括功率转换效率 (PCE) 和电流密度-电压 (J-V) 扫描.
- 根据国际有机光伏稳定峰会 (ISOS-L-1) 协议评估了运行稳定性,包括在气氛中持续照明1太阳.
主要成果:
- 基于Zn-FP的PSC实现了20.34%的最大功率转换效率 (PCE).
- 这些设备显示了无歇斯底里的电流密度-电压 (J-V) 扫描,表明有效的电荷传输.
- 在ISOS-L-1条件下连续运行1000小时后,未封装的设备保持了90%以上的初始效率.
- 该Zn-FP剂表现出疏水性质和高迁移障碍,有助于提高设备稳定性.
结论:
- () (Zn-FP) 是PSC中HTM的有希望的替代剂,提供了增强的操作稳定性.
- -FP的疏水性和高迁移屏障有助于提高矿太阳能电池的寿命.
- 这一进步代表着稳定高效的矿光伏技术商业化迈出的重要一步.
相关概念视频
Halogens
18.5K
Group 17 elements, known as halogens, are nonmetals. At room temperature, fluorine and chlorine are gases, bromine is a liquid, and iodine a solid. Astatine is a highly unstable radioactive element, so currently, most of its properties are unknown due to its short half-life. Tennessine is a synthetic element also predicted to be in this group.
18.5K
Alkyl Halides
16.9K
Structural Properties
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...
Alkyl halides are halogen-substituted alkanes wherein one or more hydrogen atoms of an alkane is replaced by a halogen atom such as fluorine, chlorine, bromine, or iodine. The carbon atom in an alkyl halide is bonded to the halogen atom, which is sp3-hybridized and exhibits a tetrahedral shape.
Unlike alkyl halides, compounds in which a halogen atom is bonded to an sp2 -hybridized carbon atom of a carbon-carbon double bond (C=C) are called vinyl halides. Whereas aryl...
16.9K
Molecular Shape and Polarity
60.6K
Dipole Moment of a Molecule
60.6K
Electrophilic Aromatic Substitution: Fluorination and Iodination of Benzene
6.1K
Bromination and chlorination of aromatic rings by electrophilic aromatic substitution reactions are easily achieved, but fluorination and iodination are difficult to achieve. Fluorine is so reactive that its reaction with benzene is difficult to control, resulting in poor yields of monofluoroaromatic products. To address this, Selectfluor reagent is used as a fluorine source in which a fluorine atom is bonded to a positively charged nitrogen.
6.1K
Acid Halides to Carboxylic Acids: Hydrolysis
2.7K
Hydrolysis of acid halides is a nucleophilic acyl substitution reaction in which acid halides react with water to give carboxylic acids. The reaction occurs readily and does not require acid or a base catalyst.
As shown below, the mechanism involves a nucleophilic attack by water at the carbonyl carbon to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen π bond along with the departure of a halide ion. A final proton transfer step yields carboxylic...
As shown below, the mechanism involves a nucleophilic attack by water at the carbonyl carbon to form a tetrahedral intermediate. This is followed by the reformation of the carbon–oxygen π bond along with the departure of a halide ion. A final proton transfer step yields carboxylic...
2.7K
ortho–para-Directing Deactivators: Halogens
5.6K
Halogens are ortho–para directors. They are more electronegative than carbon. Therefore, as ring substituents, they can withdraw electrons through the inductive effect and deactivate the aromatic ring towards electrophilic substitution. Halogens also have an electron-donating resonance effect on the ring, which influences the orientation of the incoming electrophile. If an electrophile attacks at the ortho or the para position, the halogen donates electrons and stabilizes the intermediate...
5.6K

