基于Bicyclopentadithiophene的有机半导体用于稳定和高性能矿太阳能电池,超过22个
Arulmozhi Velusamy1, Shakil N Afraj1, Yu-Sheng Guo1
1Department of Chemistry, National Central University, Taoyuan 32001, Taiwan.
ACS applied materials & interfaces
|January 26, 2024
概括
新的非富勒受体有效地抑制矿太阳能电池的缺陷,提高效率超过22%,并改善长期稳定性. 这种具有成本效益的方法提高了用于下一代太阳能应用的矿性能.
科学领域:
- 材料科学 材料科学 材料科学
- 可再生能源可再生能源是可再生能源.
- 太阳能光伏发电是如何实现的
背景情况:
- 有机-无机化 Perowskites 对太阳能电池有希望,但由于缺陷而遭受效率损失和不稳定.
- 缺陷通常发生在介面,粒边界 (GB) 和表面,阻碍设备性能.
研究的目的:
- 开发一种在现场被动化方法,用于矿中协调不足的Pb2+缺陷.
- 调查基于双cyclopentadithiophene (BCDT) 的新型非富勒伦受体 (NFAs) 的使用,用于缺陷被动化和性能增强.
- 评估NFAs对矿颗粒生长,陷密度和载体重组寿命的影响.
主要方法:
- 在抗溶剂滴滴过程中采用了现场被动化策略.
- 新的NFAs,特别是INXBCDT (X = H,Cl,Br),进行了合成和利用.
- 矿太阳能电池 (PSC) 使用被动化矿薄膜制造,其性能和稳定性得到了特征.
主要成果:
- 具有吸收电子的末端封装组的BCDT核心有效地被动化了粒边界缺陷,并促进了矿粒的生长.
- 消极降低了陷密度,增加了载体重组寿命,从而提高了设备的效率.
- 替代的INBr-end-capped BCDT (INBrBCDT-b8) 被动化设备实现了最高功率转换效率 (PCE) 22.20%,比无被动化设备 (18.09%) 显著改善.
- 较容易溶解的NFAs (2-乙基基替代) 导致较高的PCEs与较难溶解的NFAs (乙基基替代) 相比.
- BCDT核心是复杂的化环系统的成本高效且易于合成的替代方案.
- 用INBrBCDT-b8治疗的PSC在手套箱中进行了1500小时的稳定性测试后,维持了大约90%的初始PCE.
结论:
- 使用简单,具有成本效益的NFAs开发的in situ被动化方法显著提高了矿太阳能电池的效率和稳定性.
- 这种方法为克服矿光伏中的缺陷相关限制提供了一个可行的策略.
- 该研究表明,最简单的高结合添加剂的潜力可以实现高性能基PSC超过22%的PCE.
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