Complexation-Regulated Molecular Ferroelectric Film for Photovoltaic Devices

IF 5.4 3区材料科学 Q2 CHEMISTRY, PHYSICAL

ACS Applied Energy Materials Pub Date : 2025-03-12 DOI:10.1021/acsaem.4c0305210.1021/acsaem.4c03052

Chen Wang, Ruonan Wang, Jiating Li, Chaoran Huang, Xinyu Du, Ruijie Li, Zhicheng Zhou, Guoxiang Zhao, Sihan Zhang, Weiyu Cheng, Hengyu Cao, Xiangle Sun, Qiang Zhang, Lutao Li*, Guifu Zou* and Shan Cong*,

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Abstract

Large-size grains play a crucial role in enhancing the properties of ferroelectric films and improving device performance. In this work, hydroiodic acid is used as an additive to promote the crystallization of a narrow-band gap molecular ferroelectric film (hexane-1,6-diammonium pentadiammonium). The complex-regulated processes resulted in a significant increase in grain size from 0.2 to 6.4 μm (32-fold enhancement), accompanied by a reduction in band gap, optimization of the energy level structure, and enhancement of ferroelectric properties. The optimized film exhibited nearly a 10-fold improvement in the performance of ferroelectric photovoltaic devices, which is further enhanced after polarization. This study introduces complex regulation strategies for optimizing molecular ferroelectrics, offering valuable insights for future research on molecular ferroelectrics.

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光伏器件用络合调控铁电分子膜

大尺寸晶粒对提高铁电薄膜的性能和提高器件性能起着至关重要的作用。在这项工作中，氢碘酸作为添加剂促进了窄带隙铁电分子膜（己烷-1,6-二铵戊二铵）的结晶。复合调控过程导致晶粒尺寸从0.2 μm增加到6.4 μm（增强32倍），同时带隙减小，能级结构优化，铁电性能增强。优化后的薄膜使铁电光伏器件的性能提高了近10倍，极化后性能进一步提高。本研究介绍了优化铁电分子的复杂调控策略，为今后铁电分子的研究提供了有价值的见解。

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来源期刊

ACS Applied Energy Materials Materials Science-Materials Chemistry

CiteScore

10.30

自引率

6.20%

发文量

1368

期刊介绍： ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.