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Vacuum-Processed Propylene Urea Additive: A Novel Approach for Controlling the Growth of CH3NH3PbI3 Crystals in All Vacuum-Processed Perovskite Solar Cells
- Title
- Vacuum-Processed Propylene Urea Additive: A Novel Approach for Controlling the Growth of CH3NH3PbI3 Crystals in All Vacuum-Processed Perovskite Solar Cells
- Authors
- Lee; Kyungmin; Kim; Yerim; Juhwan; Park; Youmin; Cho; Kayoung; Won-Suk; JaeHong; Kyungkon
- Ewha Authors
- 김원석; 김경곤; 박재홍
- SCOPUS Author ID
- 김원석; 김경곤; 박재홍
- Issue Date
- 2024
- Journal Title
- ACS Applied Materials and Interfaces
- ISSN
- 1944-8244
- Citation
- ACS Applied Materials and Interfaces vol. 16, no. 17, pp. 21915 - 21923
- Keywords
- coevaporation; crystallinity; Lewis base additive; morphology; perovskite growth; perovskite solar cells; thermal evaporation; vacuum deposition
- Indexed
- SCIE; SCOPUS
- Document Type
- Article
- Abstract
- In this study, we present a novel method for controlling the growth of perovskite crystals in the vacuum thermal evaporation process by utilizing a vacuum-processable additive, propylene urea (PU). By coevaporation of perovskite precursors with PU to form the perovskite layer, PU, acting as a Lewis base additive, retards the direct reaction between the perovskite precursors. This facilitates a larger domain size and reduced defect density. Following the removal of the residual additive, the perovskite layer, exhibiting improved crystallinity, demonstrates reduced charge recombination, as confirmed by a time-resolved microwave conductivity analysis. Consequently, there is a notable enhancement in open-circuit voltage and power conversion efficiency, increasing from 1.05 to 1.15 V and from 17.17 to 18.31%, respectively. The incorporation of a vacuum-processable and removable Lewis base additive into the fabrication of vacuum-processed perovskite solar cells offers new avenues for optimizing these devices © 2024 American Chemical Society.
- DOI
- 10.1021/acsami.4c02043
- Appears in Collections:
- 자연과학대학 > 화학·나노과학전공 > Journal papers
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