相关实验视频

Updated: Jun 12, 2025

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

In situ Grazing Incidence Small Angle X-ray Scattering on Roll-To-Roll Coating of Organic Solar Cells with Laboratory X-ray Instrumentation

Published on: March 2, 2021

溶液处理诱导的H聚合物烯二化物Zwitterion表现出对有机太阳能电池有效的阴极修改进行紧的分子堆叠

Zhe Li¹, Yanhe Xiang¹, Jiayu Li¹

¹State Key Laboratory of Chemical Resource Engineering, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing, 100029, P. R. China.

Angewandte Chemie (International ed. in English)

|September 21, 2024

概括

研究人员为有机太阳能电池 (OSC) 开发了一种新的有机阴极介层 (PDI-B),显著提高了电荷传输和设备效率. 这种PDI-B材料的性能与无机介层相美.

科学领域:

材料科学材料科学材料科学
有机电子有机电子
太阳能光伏发电是如何实现的

背景情况:

高性能有机阴极介层 (CIL) 对于有机太阳能电池 (OSC) 的发展至关重要.
现有的有机CIL通常表现不佳,与无机同行相比,由于负载运输能力差.
二胺衍生物 (PDI) 是CIL的有希望的候选物,但需要进行结构优化.

研究的目的:

设计和合成一种新的基于PDI的zwitterion (PDI-B) 作为OSCs的高性能有机CIL.
调查PDI-B.的自组装和充电运输特性.
评估使用PDI-B作为CIL的OSC的绩效提升.

主要方法:

一个二胺 (PDI) 兹威特的合成,PDI-B.
描述PDI-B膜形态和聚合行为 (H聚合,π-π堆叠距离).
测量PDI-B导电性和制造/测试有机太阳能电池 (OSC) 使用PDI-B CILs.

主要成果:

在溶液加工过程中,PDI-B形成H聚合物,增强电荷传输.
与PDINN (4.2 Å) 相比,PDI-B的π-π堆叠距离 (3.9 Å) 降低,有助于电荷的运输.
PDI-B具有高导电性 (1.81×10−3 S/m),与无机CIL相比较.
带有 PDI-B 的 OSC 在二进制设备中实现了 19.23% 的高功率转换效率 (PCE).
提高PDI-B的溶剂耐药性和处理兼容性,提高了在倒置和大面积的OSC中的性能.

结论:

优化PDI薄膜的凝聚结构,特别是促进H聚合,是提高电荷导电性的有效策略.
PDI-B代表了一个新的高性能有机CIL类别,用于OSCs.
这项工作为开发基于PDI的先进材料开辟了道路,用于高效和稳定的有机电子.

关键词:

在H-聚合物中.烯二胺化物-烯二胺叶片涂层 - 叶片的涂层电子传输物质是一种物质.有机太阳能电池是有机太阳能电池.

更多相关视频

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Monovalent Cation Doping of CH3NH3PbI3 for Efficient Perovskite Solar Cells

Published on: March 19, 2017

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer

Morphology Control for Fully Printable Organic–Inorganic Bulk-heterojunction Solar Cells Based on a Ti-alkoxide and Semiconducting Polymer

Published on: January 10, 2017

相关概念视频

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

Aryldiazonium Salts to Azo Dyes: Diazo Coupling

The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the...

Photochemical Electrocyclic Reactions: Stereochemistry

Photochemical Electrocyclic Reactions: Stereochemistry

The absorption of UV–visible light by conjugated systems causes the promotion of an electron from the ground state to the excited state. Consequently, photochemical electrocyclic reactions proceed via the excited-state HOMO rather than the ground-state HOMO. Since the ground- and excited-state HOMOs have different symmetries, the stereochemical outcome of electrocyclic reactions depends on the mode of activation; i.e., thermal or photochemical.
Selection Rules: Photochemical Activation

P-N junction

P-N junction

A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...