The DOI matches its Crossref record; 59 of the 59 references it cites were found in a registry or an index.
Stable and Efficient Organo‐Metal Halide Hybrid Perovskite Solar Cells via π‐Conjugated Lewis Base Polymer Induced Trap Passivation and Charge Extraction
Abstract
High‐quality pinhole‐free perovskite film with optimal crystalline morphology is critical for achieving high‐efficiency and high‐stability perovskite solar cells (PSCs). In this study, a p‐type π‐conjugated polymer poly[(2,6‐(4,8‐bis(5‐(2‐ethylhexyl) thiophen‐2‐yl)‐benzo[1,2‐b:4,5‐b′] dithiophene))‐alt‐(5,5‐(1′,3′‐di‐2‐thienyl‐5′,7′‐bis(2‐ethylhexyl) benzo[1′,2′‐c:4′,5′‐c′] dithiophene‐4,8‐dione))] (PBDB‐T) is introduced into chlorobenzene to form a facile and effective template‐agent during the anti‐solvent process of perovskite film formation. The π‐conjugated polymer PBDB‐T is found to trigger a heterogeneous nucleation over the perovskite precursor film and passivate the trap states of the mixed perovskite film through the formation of Lewis adducts between lead and oxygen atom in PBDB‐T. The p‐type semiconducting and hydrophobic PBDB‐T polymer fills in the perovskite grain boundaries to improve charge transfer for better conductivity and prevent moisture invasion into the perovskite active layers. Consequently, the PSCs with PBDB‐T modified anti‐solvent processing leads to a high‐efficiency close to 20%, and the devices show excellent stability, retaining about 90% of the initial power conversion efficiency after 150 d storage in dry air.
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Cites
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Cited by
Causes and Solutions of Recombination in Perovskite Solar Cells
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Metadata
- Authors
- Qin, P., Yang, G., Ren, Z., Cheung, S. H., So, S. K., Chen, L., Hao, J., Hou, J., & Li, G.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2018-02-07
- Volume
- 30
- Issue
- 12
- Pages
- e1706126-e1706126
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2792340776
- Cited by
- 293
- References
- 59
- FWCI
- 16.93
- Type
- journal article
- Language
- en
- Open access
- closed
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- Qin, P., Yang, G., Ren, Z., Cheung, S. H., So, S. K., Chen, L., Hao, J., Hou, J., & Li, G. (2018). Stable and Efficient Organo‐Metal Halide Hybrid Perovskite Solar Cells via π‐Conjugated Lewis Base Polymer Induced Trap Passivation and Charge Extraction. Advanced Materials. https://doi.org/10.1002/adma.201706126
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