Improving the Solar Energy Utilization of Perovskite Solar Cells via Synergistic Effects of Alkylamine and Alkyl Acid on Defect Passivation

Hsin Tsung Hsu, Yu Min Kung, Shanmuganathan Venkatesan, Hsisheng Teng, Yuh Lang Lee

研究成果: Article同行評審

3 引文 斯高帕斯(Scopus)

摘要

Defects in perovskite film are sources of charge recombination centers, which are detrimental to the performance of perovskite solar cells (PSCs). To decrease the density of defects, dodecylamine (DAM), dodecylic acid (DAC), and 12-aminolauric acid (ALA) are utilized as additives to prepare methyl ammonium lead iodide (MAPbI3) perovskite films. Herein, the passivation effects of these molecules on the properties of the MAPbI3 films and the performances of the corresponding PSCs are studied. The results show that DAM and DAC which contain –NH2 and –COOH groups, respectively, can increase the PCEs of the devices. This result implies that both groups serve as the Lewis base, passivating the defects of undercoordinated Pb2+. For the ALA molecules, the –NH2 and –COOH groups are present simultaneously at the two ends of the molecule; the passivation ability is more significant than the others, which is attributable to the synergistic effects of the two groups. By the passivation of ALA, the PCE of the PSC can increase from 18.42% to 19.96% under one sun illumination. Furthermore, the treatments of the passivation agents also increase the hydrophobicity of the perovskite films, improving the stability of the PSCs.

原文English
文章編號2300122
期刊Solar RRL
7
發行號11
DOIs
出版狀態Published - 2023 6月

All Science Journal Classification (ASJC) codes

  • 電子、光磁材料
  • 原子與分子物理與光學
  • 能源工程與電力技術
  • 電氣與電子工程

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