The DOI matches its Crossref record; 3 of the 3 references it cites were found in a registry or an index.
Amine‐Free Synthesis of Cesium Lead Halide Perovskite Quantum Dots for Efficient Light‐Emitting Diodes
Abstract
Cesium lead halide perovskite quantum dots (PQDs) have attracted significant interest for optoelectronic applications in view of their high brightness and narrow emission linewidth at visible wavelengths. A remaining challenge is the degradation of PQDs during purification from the synthesis solution. This is attributed to proton transfer between oleic acid and oleylamine surface capping agents that leads to facile ligand loss. Here, a new synthetic method is reported that enhances the colloidal stability of PQDs by capping them solely using oleic acid (OA). Quaternary alkylammonium halides are used as precursors, eliminating the need for oleylamine. This strategy enhances the colloidal stability of OA capped PQDs during purification, allowing us to remove excess organic content in thin films. Inverted red, green, and blue PQD light‐emitting diodes (LED) are fabricated for the first time with solution‐processed polymer‐based hole transport layers due to higher robustness of OA capped PQDs to solution processing. The blue and green LEDs exhibit threefold and tenfold improved external quantum efficiency (EQE), respectively, compared to prior related reports for amine/ammonium capped cross‐linked PQDs. The brightest blue LED based on all inorganic CsPb(Br 1−xClx)3 PQDs is also reported.
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Cites
Improved performance and stability in quantum dot solar cells through band alignment engineering
Chuang, C.-H. M., Brown, P. R., Bulović, V., & Bawendi, M. G. (2014) · Nature Materials · doi:10.1038/nmat3984 · Cited by 1,795
Deschler, F., Price, M., Pathak, S., Klintberg, L. E., Jarausch, D.-D., Higler, R., Hüttner, S., Leijtens, T., Stranks, S. D., Snaith, H. J., et al. (2014) · The Journal of Physical Chemistry Letters · doi:10.1021/jz5005285 · Cited by 1,753
Air-stable n-type colloidal quantum dot solids
Ning, Z., Voznyy, O., Pan, J., Hoogland, S., Adinolfi, V., Xu, J., Li, M., Kirmani, A. R., Sun, J.-P., Minor, J., et al. (2014) · Nature Materials · doi:10.1038/nmat4007 · Cited by 619
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Cited by
Surface Chemistry Engineering of Perovskite Quantum Dots: Strategies, Applications, and Perspectives
Bai, Y., Hao, M., Ding, S., Chen, P., & Wang, L. (2022) · Advanced Materials · doi:10.1002/adma.202105958 · Cited by 394
Chiba, T., Hoshi, K., Pu, Y.-J., Takeda, Y., Hayashi, Y., Ohisa, S., Kawata, S., & Kido, J. (2017) · ACS Applied Materials & Interfaces · doi:10.1021/acsami.7b03382 · Cited by 336
Blue perovskite light-emitting diodes: progress, challenges and future directions
Kumawat, N. K., Liu, X.-K., Kabra, D., & Gao, F. (2019) · Nanoscale · doi:10.1039/c8nr09885a · Cited by 268
Metadata
- Authors
- Yassitepe, E., Yang, Z., Voznyy, O., Kim, Y., Walters, G., Castañeda, J. A., Kanjanaboos, P., Yuan, M., Gong, X., Fan, F., Pan, J., Hoogland, S., Comin, R., Bakr, O. M., Padilha, L. A., Nogueira, A. F., & Sargent, E. H.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2016-10-31
- Volume
- 26
- Issue
- 47
- Pages
- 8757-8763
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2544011099
- Cited by
- 415
- References
- 3
- FWCI
- 19.21
- Type
- journal article
- Language
- en
- Open access
- closed
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- Yassitepe, E., Yang, Z., Voznyy, O., Kim, Y., Walters, G., Castañeda, J. A., Kanjanaboos, P., Yuan, M., Gong, X., Fan, F., Pan, J., Hoogland, S., Comin, R., Bakr, O. M., Padilha, L. A., Nogueira, A. F., & Sargent, E. H. (2016). Amine‐Free Synthesis of Cesium Lead Halide Perovskite Quantum Dots for Efficient Light‐Emitting Diodes. Advanced Functional Materials. https://doi.org/10.1002/adfm.201604580
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