We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Colloidal Zeta Potential Modulation as a Handle to Control the Crystallization Kinetics of Tin Halide Perovskites for Photovoltaic Applications.
- Authors
Wang, Junfang; Huang, Junjie; Abdel‐Shakour, Muhammad; Liu, Tianhua; Wang, Xu; Pan, Yongle; Wang, Lixia; Cui, Enhao; Hu, Jin‐Song; Yang, Shihe; Meng, Xiangyue
- Abstract
Tin halide perovskites (THPs) have demonstrated exceptional potential for various applications owing to their low toxicity and excellent optoelectronic properties. However, the crystallization kinetics of THPs are less controllable than its lead counterpart because of the higher Lewis acidity of Sn2+, leading to THP films with poor morphology and rampant defects. Here, a colloidal zeta potential modulation approach is developed to improve the crystallization kinetics of THP films inspired by the classical Derjaguin‐Landau‐Verwey‐Overbeek (DLVO) theory. After adding 3‐aminopyrrolidine dihydro iodate (APDI2) in the precursor solution to change the zeta potential of the pristine colloids, the total interaction potential energy between colloidal particles with APDI2 could be controllably reduced, resulting in a higher coagulation probability and a lower critical nuclei concentration. In situ laser light scattering measurements confirmed the increased nucleation rate of the THP colloids with APDI2. The resulting film with APDI2 shows a pinhole‐free morphology with fewer defects, achieving an impressive efficiency of 15.13 %.
- Subjects
CRYSTALLIZATION kinetics; ZETA potential; PEROVSKITE; TIN; LEWIS acidity; COLLOIDAL crystals; COLLOIDS
- Publication
Angewandte Chemie, 2024, Vol 136, Issue 17, p1
- ISSN
0044-8249
- Publication type
Academic Journal
- DOI
10.1002/ange.202317794