The DOI matches its Crossref record; 38 of the 38 references it cites were found in a registry or an index.
Large cation ethylammonium incorporated perovskite for efficient and spectra stable blue light-emitting diodes
Open accessAbstract
Perovskite light-emitting diodes (PeLEDs) have showed significant progress in recent years; the external quantum efficiency (EQE) of electroluminescence in green and red regions has exceeded 20%, but the efficiency in blue lags far behind. Here, a large cation CH 3 CH 2 NH 2+ is added in PEA 2(CsPbBr 3)2 PbBr 4 perovskite to decrease the Pb–Br orbit coupling and increase the bandgap for blue emission. X-ray diffraction and nuclear magnetic resonance results confirmed that the EA has successfully replaced Cs+ cations to form PEA 2(Cs 1-xEAxPbBr 3)2 PbBr 4. This method modulates the photoluminescence from the green region (508 nm) into blue (466 nm), and over 70% photoluminescence quantum yield in blue is obtained. In addition, the emission spectra is stable under light and thermal stress. With configuration of PeLEDs with 60% EABr, as high as 12.1% EQE of sky-blue electroluminescence located at 488 nm has been demonstrated, which will pave the way for the full color display for the PeLEDs.
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Metadata
- Authors
- Chu, Z., Zhao, Y., Ma, F., Zhang, C.-X., Deng, H., Gao, F., Ye, Q., Meng, J., Yin, Z., Zhang, X., & You, J.
- Venue
- Nature Communications
- Published
- 2020-08-20
- Volume
- 11
- Issue
- 1
- Pages
- 4165-4165
- ISSN
- 2041-1723 (ISSN-L)
- OpenAlex
- W3061209496
- Cited by
- 319
- References
- 38
- FWCI
- 17.55
- Type
- journal article
- Language
- en
- Open access
- gold
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- Chu, Z., Zhao, Y., Ma, F., Zhang, C.-X., Deng, H., Gao, F., Ye, Q., Meng, J., Yin, Z., Zhang, X., & You, J. (2020). Large cation ethylammonium incorporated perovskite for efficient and spectra stable blue light-emitting diodes. Nature Communications. https://doi.org/10.1038/s41467-020-17943-6
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