用于化学和场效应被动化的配体的胺定化稳定了矿太阳能电池
Yi Yang1, Hao Chen1, Cheng Liu1
1Department of Chemistry, Northwestern University, Evanston, IL, USA.
Science (New York, N.Y.)
|November 21, 2024
概括
新的氨基联体通过抵抗应力下去质子变化来提高矿太阳能电池 (PSC) 的稳定性. 这一突破提高了耐用太阳能应用的热稳定性和功率转换效率.
科学领域:
- 材料科学
- 可再生能源
- 太阳能发电
背景情况:
- 表面被动化对于提高矿太阳能电池 (PSC) 的功率转换效率 (PCE) 是至关重要的.
- 使用联体的当前被动化方法在光和热应力下不稳定.
- 为了提高PSC的长期性能,需要提高连接物稳定性.
研究的目的:
- 开发新型的联体,以提高PSC中被动化层的热稳定性.
- 与传统的联体相比,研究联体对脱质的抵抗.
- 提高矿太阳能电池的运行稳定性和PCE.
主要方法:
- 合成了一系列具有共振增强N-H键的氨基联体.
- 使用平衡常数评估的连接体脱质.
- 在85°C的热和光应力老化后,测量光发光量 (PLQY) 的维护.
- 使用新型被动化策略制造的反向PSC.
- 在85°C的连续1太阳最大功率点 (MPP) 运行下测试设备的稳定性.
主要成果:
- 联体显示出脱质平衡常数减少了10倍以上.
- 在85°C照明下老化后,PLQY维持率增加了两倍.
- 在逆转PSC中获得了26.3%的准稳定状态PCE.
- 在85°C连续使用1个MPP100小时后,已证实≥90%的PCE保持.
结论:
- 联体为矿太阳能电池被动化提供卓越的热稳定性和运行稳定性.
- 这一战略显著提高了PSC的耐用性和长期业绩.
- 开发的被动化方法为更可靠和更高效的矿太阳能技术铺平了道路.
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