AI Article Synopsis
- - The study developed blue perovskite quantum dots (PQDs) using didodecyldimethylammonium bromide (DDAB) to improve quality by reducing surface defects and particle size variations.
- - After treatment with DDAB, the blue CsPbClBr PQDs produced a superior thin film in n-octane, showing better uniformity compared to untreated PQDs.
- - The resulting devices achieved a stable operational lifetime with an electroluminescence peak at 470 nm and an external quantum efficiency (EQE) of 1.63% at 2.6 V and 0.34 mA/cm², demonstrating a promising method for creating high-performance blue-emitting devices.
Article Abstract
In this study, blue perovskite quantum dots (PQDs) were prepared using didodecyldimethylammonium bromide (DDAB), which can passivate surface defects caused by the loss of surface ligands and reduce particle size distribution. After the passivation of DDAB, blue CsPbClBr PQDs dispersed in n-octane produced a more compact and uniform PQD thin film than the non-passivated ones. The resulting device showed a stabile lifetime, and an EL peak of 470 nm and a maximum EQE of 1.63% were obtained at an operating voltage of 2.6 V and a current density of 0.34 mA/cm. This work aims to provide a simple method to prepare blue-emitting PQDs and high-performance PQD-based light-emitting devices.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9693500 | PMC |
| http://dx.doi.org/10.3390/nano12223957 | DOI Listing |
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