阳离子合聚电解质作为半导体添加剂,用于高效和稳定的矿太阳能电池
Jong Hyun Park1,2, Young Wook Noh1, Jung Min Ha3
1School of Materials Science and Engineering, Ulsan National Institute of Science and Technology (UNIST), UNIST-gil 50, Ulsan 44919, Republic of Korea.
ACS applied materials & interfaces
|November 20, 2023
概括
研究了π-结合的多电解质 (CPE) 作为半导体添加剂,以使矿太阳能电池 (PSC) 中的缺陷被动化. MPS2-TEA表现出优异的缺陷被动化,导致高功率转换效率和增强的设备稳定性.
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:
- 矿太阳能电池 (PSC) 由于内在缺陷而面临效率和稳定性挑战.
- 现有的缺陷被动化策略通常涉及绝缘体,阻碍电荷传输.
- π-结合的多电解质 (CPE) 作为半导体添加剂具有潜力,可以同时减轻缺陷和传输电荷.
研究的目的:
- 调查两种CPE,MPS2-TEA和PCPDTBT2-TMA的有效性,作为PSCs的矿层内的直接缺陷被动化添加剂.
- 为了比较缺陷被动化能力和对CPE光伏性能的影响,CPE具有不同的电导率.
- 在运营压力下评估纳入这些CPE的PSC的长期稳定性.
主要方法:
- 合成和特征的MPS2-TEA和PCPDTBT2-TMA. 这两种.
- 将CPE作为添加剂直接纳入矿吸收层.
- 二次离子显微镜用于分布分析.
- 用于缺陷被动化评估的光谱技术.
- 制造和PSC设备的性能测试 (小型和大型区域).
- 在持续照明和热应力下进行长期稳定性测试.
主要成果:
- 发现CPE在矿层内均分布.
- 与PCPDTBT2-TMA相比,MPS2-TEA表现出较高的缺陷被动化.
- 使用MPS2-TEA的PSC实现了功率转换效率 (PCE) 的22.7% (0.135 cm2) 和20.0% (1 cm2).
- 配备MPS2-TEA的设备表现出卓越的操作稳定性,在960小时的照明后保持了超过87.3%的初始PCE,在85°C下850小时后保持了89%.
结论:
- CPEs,特别是MPS2-TEA,是有效的半导体添加剂,可以使PSC中的缺陷无效.
- 电导率和CPE的化学结构显著影响其缺陷被动化能力.
- 这种方法为提高矿太阳能电池和相关光电子设备的效率和长期稳定性提供了有希望的途径.
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