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通过挥发性固体添加剂战略解决有机太阳能电池中的能量损失

Huimin Xiang¹, Fengbo Sun¹, Xufan Zheng¹

¹Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education), School of Optoelectronic Materials and Technology, Jianghan University, Wuhan, 430056, China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|April 18, 2024

概括

研究人员开发了一种新的添加剂,1,4-bis(iodomethyl) 环素 (DIMCH),以减少有机太阳能电池 (OSC) 中的能量损失. 这一策略通过优化形态和减少重组,将OSC效率提高到18.8%.

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:

能量损失,特别是开放电路电压 (VOC) 缺陷,显著阻碍有机太阳能电池 (OSC) 的性能.
开发有效的策略来最大限度地减少能源损失对于推进OSC技术至关重要.

研究的目的:

引入一种新型的挥发性固体添加剂,1,4-bis(甲) 环素 (DIMCH),作为一种形态指导剂.
调查DIMCH对最先进的有机太阳能电池系统中减少能源损失的影响.
为了提高二进制有机太阳能电池的效率.

主要方法:

在OSC中使用DIMCH作为挥发性固体添加剂在薄膜形成过程中.
分析DIMCH对捐赠物和接受物质结晶性的影响.
评估DIMCH对混合物形态和相分离同质性的影响.
评估OSCs内能源混乱和陷密度的变化.

主要成果:

在二进制OSC中实现了18.8%的高功率转换效率,使其处于报告设备的最前沿.
DIMCH有效地平衡了供体和受体材料的结晶性,从而形成了一个均的网络结构.
在OSC片中降低了域相位分离,减弱了能量乱和陷密度.
证明了辐射和非辐射重组诱导的能量损失 (ΔE2/ΔE3) 的减少.

结论:

挥发性固体添加剂DIMCH作为一个有效的形态指导客,以减轻OSC中的能量损失.
这种方法为进一步减少能源损失和提高有机太阳能电池性能提供了一个有希望的策略.
该研究提供了关于挥发性固体添加剂在OSC发展中的作用的宝贵见解.

关键词:

1, 4-bis(甲基) 环二甲.能量损失能量损失开放电路电压的开放电路电压.有机太阳能电池是有机太阳能电池.挥发性固体添加剂是挥发性的固体添加剂.

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