在锡三化佩洛夫斯基特薄膜中对热载体放松的阳离子影响
Larissa J M van de Ven1, Eelco K Tekelenburg1, Matteo Pitaro1
1Zernike Institute for Advanced Materials, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands.
ACS energy letters
|March 14, 2024
概括
三化太阳能电池表现出异常缓慢的热载体冷却. 这项研究比较了不同的离子,揭示了混合有机-无机矿提供更慢的冷却,这对于提高太阳能电池效率至关重要.
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.
- 固态物理 固态物理
背景情况:
- 单节太阳能电池面临的效率极限.
- 缓慢的热载体冷却是超越这些限制的有希望的途径.
- 三化表现出缓慢的冷却,但阴离子效应未得到充分研究.
研究的目的:
- 进行第一个关于离子体 (formamidinium,甲基,) 对三化矿物质特性影响的比较研究.
- 为了研究这些材料的热载体冷却动态.
- 评估这些材料在先进太阳能电池应用中的潜力.
主要方法:
- 甲基,甲基和三化的薄膜沉积.
- 光发光谱学用于分析排放峰值和载体动态.
- 热载体光发光衰变时间的分析.
主要成果:
- 随着兴奋状态人口的增加,在排放峰值中观察到显著的高能量转移,特别是在混合有机-无机矿中 (∼45 meV vs ∼15 meV 在 9 × 10^17 cm^-3).
- 热载体光发光衰变时间在研究的锡组合中从0.6到2.8 ns不等.
- 混合有机-无机矿与锡三化相比,其热载体冷却速度明显较慢.
结论:
- 阴离子选择显著影响三化矿的热载体动力学.
- 混合有机-无机矿表现出优越的慢热载体冷却性能.
- 这些发现强调了formamidinium和甲基锡三化物对于开发具有潜在更高功率转换效率的下一代太阳能电池的重要性.
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