印-C60双添加物和交联烯中间层的组合,导致高效的反转聚合物太阳能电池
Yen-Ju Cheng1, Chao-Hsiang Hsieh, Youjun He
1Department of Applied Chemistry, National Chiao Tung University, 1001 Ta Hseuh Road, Hsin-Chu, 30010 Taiwan. yjcheng@mail.nctu.edu.tw
Journal of the American Chemical Society
|November 25, 2010
概括
这项研究提高了聚合物太阳能电池的效率,使用了indene-C60 bis-adduct (ICBA) 和一种新的交联烯介层. 优化的设备实现了创纪录的6.2%的功率转换效率.
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:
- 聚3-甲) (P3HT) 是有机太阳能电池中常见的供体材料.
- 印第因-C60 bis-adduct (ICBA) 提供了一个较高的最低无人分子轨道 (LUMO) 水平,有利于开放电路电压.
- 接口工程对于优化电荷提取和设备性能至关重要.
研究的目的:
- 为了提高P3HT的功率转换效率 (PCE):ICBA反向太阳能电池.
- 为了研究一个交叉连接的富勒烯介层对设备性能的影响.
- 探索能量水平和设备特征之间的关系.
主要方法:
- 使用P3HT作为捐赠者和ICBA作为接受者制造倒置太阳能电池.
- 在活性层和电子输送层之间加入一个交联烯中间层 (C-PCBSD).
- 设备性能的表征,包括开路电压,短路电流,填充因子和PCE.
主要成果:
- 该P3HT:ICBA太阳能电池在0.82V的高开放电路电压下实现了4.8%的初始PCE.
- 添加C-PCBSD中间层改善了短路电流和填充因子.
- 优化的倒置装置显示了创纪录的6.2%的PCE.
结论:
- ICBA的较高的LUMO水平有助于基于P3HT的倒置太阳能电池的高开通电路电压.
- 交联的富勒烯介层有效调节接口特征,增强电荷传输和设备效率.
- 这项工作为开发高性能有机光伏设备提供了一个有前途的战略.
更多相关视频
相关概念视频
[4+2] Cycloaddition of Conjugated Dienes: Diels–Alder Reaction
The Diels–Alder reaction is an example of a thermal pericyclic reaction between a conjugated diene and an alkene or alkyne, commonly referred to as a dienophile. The reaction involves a concerted movement of six π electrons, four from the diene and two from the dienophile, forming an unsaturated six-membered ring. As a result, these reactions are classified as [4+2] cycloadditions.
Structure of Conjugated Dienes
Introduction
Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the double...
Conjugated dienes are compounds characterized by the presence of alternating double and single bonds. In a conjugated system like 1,3-butadiene, the unhybridized 2p orbital on each carbon overlaps continuously, allowing the π electrons to be delocalized across the entire molecule. In contrast, this type of overlap does not occur in cumulated and isolated dienes, such as 2,3-pentadiene and 1,4-pentadiene, respectively. Instead, the π electrons remain localized between the double...
Thermal and Photochemical Electrocyclic Reactions: Overview
Electrocyclic reactions are reversible reactions. They involve an intramolecular cyclization or ring-opening of a conjugated polyene. Shown below are two examples of electrocyclic reactions. In the first reaction, the formation of the cyclic product is favored. In contrast, in the second reaction, ring-opening is favored due to the high ring strain associated with cyclobutene formation.
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...


