消除界面能量障碍使用带有碎形几何学的登德里默多电解质
1Departament d'Enginyeria Electrònica, Universitat Politècnica de Catalunya (UPC), Barcelona 08034, Spain.
ACS applied materials & interfaces
|June 3, 2023
概括
使用像聚胺胺 (PAMAM) 这样的树突体的合聚电解质薄膜可以增强太阳能电池中的电子运输. PAMAM G3 片实现了超过 15% 的效率,克服了传统接触的局限性.
科学领域:
- 材料科学 材料科学 材料科学
- 表面科学是一门学科.
- 有机电子 有机电子
背景情况:
- 结合聚电解质 (CPE) 薄膜正在研究它们在电子设备中的潜力.
- 聚胺胺 (PAMAM) 树突和分支聚乙烯胺 (b-PEI) 具有高密度的氨基基群,对于创建二极界面至关重要.
- 对n型的费米级固定限制了传统接触器的性能.
研究的目的:
- 评估基于PAMAM树突体 (G1,G3) 和b-PEI作为n型的电子传输层的CPE薄膜.
- 为了评估这些材料对表面潜力的影响,并克服费米水平固定.
- 使用这些CPE薄膜制造和比较概念验证的太阳能电池.
主要方法:
- 在甲醇中使用PAMAM树突和b-PEI制备CPE薄膜.
- 在n型上测量真空水平转移和表面潜力.
- 使用氧化瓦纳和CPE电子输送层制造太阳能电池.
- 对设备性能和与薄膜特性相关性的分析.
主要成果:
- PAMAM G3膜产生了最高的真空水平转移 (1.07 eV),超过b-PEI (0.93 eV) 和PAMAM G1 (0.72 eV).
- 用PAMAM G3.3实现了低至20mΩ·cm2的特定接触电阻.
- 使用PAMAM G3的太阳能电池实现了超过15%的转换效率,并改善了光伏参数.
- 引入了一种价值图 (Vσ) 来量化基于质子化氨基群的CPE薄膜性能.
结论:
- PAMAM树突体是设计具有增强电荷载体选择性的CPE薄膜的有效材料.
- 树突体的碎形几何学有助于功能群的密度更高,提高性能.
- 这些CPE薄膜为提高太阳能电池效率的传统接触提供了一个有希望的替代方案.
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