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Updated: Jan 26, 2026

Inkjet Printing All Inorganic Halide Perovskite Inks for Photovoltaic Applications
Published on: January 22, 2019
Bidirectional dual-anchoring buried interface regulates crystallization kinetics of perovskite prepared using
Fei Zheng1, Na Yang1, Shiqi Li1
1College of Physics and Optoelectronics, Shanxi Key Lab of Photovoltaic Technology and Application, Key Lab of Advanced Transducers and Intelligent Control System, Ministry of Education. Taiyuan University of Technology, Taiyuan 030024, China.
Abstract:
Buried interface engineering has been widely recognized as an effective strategy to regulate the perovskite (PVK) crystallization kinetics. However, the mechanism of buried interfaces affect PVK crystallization kinetics is not yet well understood. In this work, a SnO2/PVK buried interface was modified using N,N'-ethylenediamine disuccinic acid (EDDS) to regulate the crystallization kinetics of the PVK prepared by two-step method and the influencing mechanism was investigated via in-situ spectroscopy techniques. The results indicated EDDS-modified buried interface accelerated the infiltration of organic ammonium salt solution and the formation of sol-gel state, delayed the formation and merging growth of PVK microcrystals, induced the oriented growth of PVK and improved the quality of the PVK film. Moreover, the EDDS exhibited a bidirectional dual-anchoring effect at the SnO2/PVK interface, which improved the electrical performance of SnO2 film, ameliorated the SnO2/PVK interface contact and energy level arrangement and passivated interfacial defects. Benefiting from these advantages, EDDS-modified perovskite solar cells (PSCs) exhibited a power conversion efficiency (PCE) of 24.40%, higher than that of control device (22.89%). An unencapsulated EDDS-modified PSC also exhibited optimal operational stability, sustaining 79% of its initial PCE after continuous illumination for 500 h, being superior to 48% for the control device.
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