The DOI matches its Crossref record; 39 of the 39 references it cites were found in a registry or an index.
Red‐Carbon‐Quantum‐Dot‐Doped SnO2 Composite with Enhanced Electron Mobility for Efficient and Stable Perovskite Solar Cells
Abstract
An efficient electron transport layer (ETL) plays a key role in promoting carrier separation and electron extraction in planar perovskite solar cells (PSCs). An effective composite ETL is fabricated using carboxylic‐acid‐ and hydroxyl‐rich red‐carbon quantum dots (RCQs) to dope low‐temperature solution‐processed SnO 2, which dramatically increases its electron mobility by ≈20 times from 9.32 × 10−4 to 1.73 × 10−2 cm 2 V−1 s−1. The mobility achieved is one of the highest reported electron mobilities for modified SnO 2. Fabricated planar PSCs based on this novel SnO 2 ETL demonstrate an outstanding improvement in efficiency from 19.15% for PSCs without RCQs up to 22.77% and have enhanced long‐term stability against humidity, preserving over 95% of the initial efficiency after 1000 h under 40–60% humidity at 25 °C. These significant achievements are solely attributed to the excellent electron mobility of the novel ETL, which is also proven to help the passivation of traps/defects at the ETL/perovskite interface and to promote the formation of highly crystallized perovskite, with an enhanced phase purity and uniformity over a large area. These results demonstrate that inexpensive RCQs are simple but excellent additives for producing efficient ETLs in stable high‐performance PSCs as well as other perovskite‐based optoelectronics.
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Cites
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Cited by
Carbon Dots: A New Type of Carbon-Based Nanomaterial with Wide Applications
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Tin Oxide Electron‐Selective Layers for Efficient, Stable, and Scalable Perovskite Solar Cells
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Metadata
- Authors
- Hui, W., Yang, Y., Xu, Q., Gu, H., Feng, S., Su, Z., Zhang, M., Wang, J., Li, X., Fang, J., Xia, F., Xia, Y., Chen, Y., Gao, X., & Huang, W.
- Venue
- Advanced Materials
- Publisher
- Wiley
- Published
- 2019-12-04
- Volume
- 32
- Issue
- 4
- Pages
- e1906374-e1906374
- ISSN
- 0935-9648 (ISSN-L)
- 1521-4095
- OpenAlex
- W2993319946
- Cited by
- 316
- References
- 39
- FWCI
- 14.72
- Type
- journal article
- Language
- en
- Open access
- closed
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- Hui, W., Yang, Y., Xu, Q., Gu, H., Feng, S., Su, Z., Zhang, M., Wang, J., Li, X., Fang, J., Xia, F., Xia, Y., Chen, Y., Gao, X., & Huang, W. (2020). Red‐Carbon‐Quantum‐Dot‐Doped SnO2 Composite with Enhanced Electron Mobility for Efficient and Stable Perovskite Solar Cells. Advanced Materials. https://doi.org/10.1002/adma.201906374
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