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在Cs₂AgBiBr₆双矿太阳能电池中通过替代减少带隙和提高效率

Ihtisham-Ul-Haq¹, M I Khan¹, Asad Ullah¹

¹Department of Physics, The University of Lahore 53700 Pakistan iftikharphysicsuet@gmail.com.

|February 13, 2024

概括

在无化物双矿Cs2AgBiBr6中替代,可以减少带隙并增强光吸收. 这种优化提高了太阳能电池的性能,提高了环保太阳能技术的功率转换效率.

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:

像Cs2AgBiBr6这样的无化物双矿 (LFHDPs) 是基于的矿 (LBPs) 的无毒替代品.
由于宽带间隙 (Eg),LFHDP面临效率限制,阻碍其光伏应用.
优化光学和光伏性能对于推进LFHDP太阳能电池至关重要.

研究的目的:

通过 (Ga) 替代,提高 Cs2AgBiBr6 太阳能电池的效率.
研究Ga替代对Cs2AgBiBr6.6光学和光伏性能的影响.
开发一种高性能,环保的光伏材料.

主要方法:

通过Ga替代合成Cs2Ag0.95Ga0.05BiBr6的合成.
使用X射线衍射 (XRD) 和紫外线光谱学进行表征.
通过太阳能模拟器测量进行性能评估.

主要成果:

XRD分析证实了由于Ga替代而发生的格子变化.
光学分析显示,带隙 (Eg) 减少,改善可见光吸收.
这种 Cs2Ag0.95Ga0.05BiBr6 太阳能电池实现了更高的 V_oc (0.94 V),J_sc (6.01 mA cm-2) 和 FF (0.80).
功率转换效率 (PCE) 从3.51%增加到4.52%.

结论:

替代有效优化Cs2AgBiBr6用于光伏应用.
增强的材料显示了更好的光吸收和光伏性能.
这项工作推进了稳定,高性能和环保的太阳能电池技术.

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