Multifunctional DIPAI Surface Passivation: Enhancing Efficiency and Stability of Perovskite Solar Cells Across Lighting Conditions
Issued Date
2025-08-11
Resource Type
eISSN
25740962
Scopus ID
2-s2.0-105035708153
Journal Title
ACS Applied Energy Materials
Volume
8
Issue
15
Start Page
11490
End Page
11501
Rights Holder(s)
SCOPUS
Bibliographic Citation
ACS Applied Energy Materials Vol.8 No.15 (2025) , 11490-11501
Suggested Citation
Usulor C.E., Passatorntaschakorn W., Khampa W., Musikpan W., Tipparak P., Singh S., Ogbuagu I.C., Seriwattanachai C., Nakajima H., Ngamjarurojana A., Gardchareon A., Kanjanaboos P., Ruankham P., Wongratanaphisan D. Multifunctional DIPAI Surface Passivation: Enhancing Efficiency and Stability of Perovskite Solar Cells Across Lighting Conditions. ACS Applied Energy Materials Vol.8 No.15 (2025) , 11490-11501. 11501. doi:10.1021/acsaem.5c01647 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/116306
Title
Multifunctional DIPAI Surface Passivation: Enhancing Efficiency and Stability of Perovskite Solar Cells Across Lighting Conditions
Corresponding Author(s)
Other Contributor(s)
Abstract
Defect-mediated recombination remains a critical bottleneck for perovskite solar cells (PSCs), limiting both the efficiency and operational stability. Passivating these defects to suppress recombination is a crucial strategy for improving the performance of PSCs. Here, di-isopropylammonium iodide (DIPAI) was introduced as a multifunctional surface ligand that not only passivated defects and stabilized the perovskite phase but also fine-tuned energy-level alignment, facilitating efficient carrier transfer between the perovskite layer and the charge transport layers. The amino groups in DIPAI coordinate with uncoordinated Pb<sup>2+</sup> ions and organic cations, promoting secondary grain growth and suppressing nonradiative. As a result, DIPAI-treated PSCs show a significant PCE enhancement of 8.3%, from 13.35 to 14.46% under one-sun illumination, and a notable improvement in indoor performance from 28.25 to 29.65% under 1000 lx LED lighting, placing them among the top-performance mixed halide perovskite devices reported. Furthermore, the devices demonstrate excellent stability, maintaining 94% of their initial efficiency after 1000 h under humid conditions (30–35%RH). This work introduces a robust and scalable surface engineering strategy for defect suppression and stability enhancement, advancing the practical deployment of PSCs in both indoor and outdoor lighting environments.