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Nanomaterials 2018, 8(7), 459; https://doi.org/10.3390/nano8070459

Improved Performance of Perovskite Light-Emitting Diodes by Quantum Confinement Effect in Perovskite Nanocrystals

1
Department of Electro-optical Engineering, National Taipei University of Technology, 1, 3 Section, Chung-Hsiao East Road, Taipei 106, Taiwan
2
Department of Optics and Photonics, National Central University, 300 Chung-Da Rd., Chung-Li 32001, Taiwan
*
Authors to whom correspondence should be addressed.
Received: 25 May 2018 / Revised: 15 June 2018 / Accepted: 19 June 2018 / Published: 25 June 2018
(This article belongs to the Special Issue Optoelectronic Nanodevices)
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Abstract

In this study, we demonstrate an easy and reliable solution-processed technique using an extra adductive in the perovskite precursor solution. Using this method, a dense and uniform morphology with full surface coverage and highly fluorescent films with nanoscale crystal grains can be obtained. The high exciton binding energy in the resulting films employing octylammonium bromide (OAB) adductives proved that high fluorescence originated from the quantum confinement effect. The corresponding perovskite light-emitting diodes (PeLEDs) that were based on this technique also exhibited excellent device performance. View Full-Text
Keywords: PeLEDs; OAB; perovskite; quantum confinement effect PeLEDs; OAB; perovskite; quantum confinement effect
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Chen, L.-C.; Tseng, Z.-L.; Lin, D.-W.; Lin, Y.-S.; Chen, S.-H. Improved Performance of Perovskite Light-Emitting Diodes by Quantum Confinement Effect in Perovskite Nanocrystals. Nanomaterials 2018, 8, 459.

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