通过重塑有机光伏的内部潜力分布来消除不平衡的移动性瓶
Yu Cui1, Chao Zhao1, João Paulo Araújo Souza2
1State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|August 27, 2023
概括
一个新的反电极兴奋剂策略通过改善载体提取来提高有机太阳能电池 (OSC) 的性能. 这种方法在各种OSC中提高了功率转换效率 (PCE),为设备的局限性提供了实际解决方案.
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:
- 不平衡的载体流动性是有机太阳能电池 (OSC) 的一个重大限制,尽管功率转换效率 (PCE) 高,但阻碍了性能突破.
- 现有的OSC设计难以有效地提取电荷载体,特别是那些移动性较低的电荷载体,导致能量损失.
研究的目的:
- 引入和验证反电极兴奋剂策略,以优化OSC内部潜力分布.
- 增强低流动性载体的提取,从而提高整体设备性能和PCE.
主要方法:
- 使用设备模拟来分析在特定深度部分活性层兴奋剂的影响.
- 该策略涉及加强对照电极附近的电场,以促进低流动性的载体提取,而不损害采集电极区域.
主要成果:
- 阴极p-doping和阳极n-doping策略导致PCE分别从15.4%增加到16.2%和16.9%增加到18.0%.
- 对于半透明设备,PCE从10.5%提高到12.1%,达到3.5%的光利用效率 (LUE).
结论:
- 拟议的反电极兴奋剂战略有效地解决了OSC中不平衡的载体流动性问题.
- 这种方法提供了一种实用和有效的方法,用于在不透明和半透明的有机太阳能电池中增强PCE和LUE.
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