arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2409.12804cond-mat.mtrl-sci
收藏

高性能硒薄膜太阳能电池的变温及载流子分辨光霍尔测量

Variable Temperature and Carrier-Resolved Photo-Hall Measurements of High-Performance Selenium Thin-Film Solar Cells

Rasmus Svejstrup Nielsen, Oki Gunawan, Teodor Todorov, Clara Brendstrup Møller, Ole Hansen, Peter Christian Kjærgaard Vesborg

AI总结:

本研究采用载流子分辨光霍尔技术与变温霍尔测量研究硒的载流子特性,结合器件模拟解决表征差异,深化对硒光电子特性的理解,为高效硒太阳能电池开发提供指导。

摘要:

硒是一种具有宽禁带的元素半导体,适用于一系列光电子和太阳能转换技术。然而,开发此类应用需要深入了解其基本材料特性。本文中,我们采用近期开发的载流子分辨光霍尔技术研究硒中的多数和少数电荷载流子特性,该技术可在不同光强下同时测绘两种载流子的迁移率和浓度。此外,我们开展了温度相关的霍尔测量,以提取受主能级和电离效率的相关信息。我们将所得结果与其他先进表征技术的结果进行了比较,并指出了其中的不一致之处。最后,我们表征了一款高性能硒薄膜太阳能电池,并开展器件模拟以系统地解决每一处差异,准确复现实验测得的电流-电压特性和外量子效率。这些结果有助于更深入地理解硒中的光电子特性和载流子动力学,可为未来的改进提供指导,并推动更高效率硒太阳能电池的开发。

英文摘要:

Selenium is an elemental semiconductor with a wide bandgap suitable for a range of optoelectronic and solar energy conversion technologies. However, developing such applications requires an in-depth understanding of the fundamental material properties. Here, we study the properties of the majority and minority charge carriers in selenium using a recently developed carrier-resolved photo-Hall technique, which enables simultaneous mapping of the mobilities and concentrations of both carriers under varying light intensities. Additionally, we perform temperature-dependent Hall measurements to extract information about the acceptor level and ionization efficiency. Our findings are compared to results from other advanced characterization techniques, and the inconsistencies are outlined. Finally, we characterize a high-performance selenium thin-film solar cell and perform device simulations to systematically address each discrepancy and accurately reproduce experimental current-voltage and external quantum efficiency measurements. These results contribute to a deeper understanding of the optoelectronic properties and carrier dynamics in selenium, which may guide future improvements and facilitate the development of higher-efficiency selenium solar cells.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑