绝缘体聚合物矩阵构建在全小分子光活性混合物上 向外推 15000 小时 T80 稳定装置
Ruijie Ma1, Xinyu Jiang2, Top Archie Dela Peña3,4
1Department of Electrical and Electronic Engineering, Research Institute for Smart Energy (RISE), Photonic Research Institute (PRI), The Hong Kong Polytechnic University, Hong Kong, China.
Advanced materials (Deerfield Beach, Fla.)
|July 12, 2024
概括
将 styrene-ethylene-butylene-styrene (SEBS) 添加到有机光伏 (OPV) 混合物中,可以显著提高设备的稳定性. 这种形态稳定器将运行寿命延长到15,000小时,同时保持高功率转换效率.
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:
- 全小分子 (ASM) 有机光伏 (OPV) 混合物需要提高运行稳定性以实现商业可行性.
- 形态降解和结晶重组是限制OPV设备寿命的关键因素.
- 开发具有成本效益和高效的稳定策略对于推进OPV技术至关重要.
研究的目的:
- 研究乙烯-丁乙烯- (SEBS) 作为ASM OPV混合物中的形态稳定剂的作用.
- 评估SEBS的增加对OPV设备的运行稳定性和功率转换效率 (PCE) 的影响.
- 阐明SEBS增强活性层形态和光物理性质的机制.
主要方法:
- 将SEBS (1 mg/ml) 纳入用于OPV制造的BM-ClEH:BO-4Cl小分子的主体溶液中.
- 加速寿命测试以确定T80值 (时间到初始PCE的80%).
- 形态特征 (例如,X射线衍射,显微镜) 和光物理测量 (例如,吸收,光发光) 来分析薄膜特性和降解途径.
主要成果:
- 微小的SEBS增加显著提高了T80的稳定性,达到15,000小时,超过了无兴奋剂 (900小时) 和强兴奋剂 (30小时) 的同行.
- 功率转换效率 (PCE) 在非素溶剂处理的ASM OPV中保持在体面的15.02%.
- SEBS有效地抑制了供体分子的降解,并防止了混合膜结晶/聚合重组,从而保持了刺激子的动态.
结论:
- styrene-ethylene-butylene-styrene (SEBS) 是一种非常有效的形态稳定剂,用于所有小分子有机光伏混合物.
- 塞布斯提供了一个具有成本效益和工业可行性的策略,可以显著提高OPV设备的运行寿命,而不会影响PCE.
- 稳定机制涉及缓解形态降解和保护活性层内的关键光物理过程.
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