TY  - JOUR
AU  - da Silva, Thais Caroline Almeida
AU  - Sánchez, Rafael S.
AU  - Alberola-Borràs, Jaume-Adrià
AU  - Vidal, Rosario
AU  - Mora-Seró, Iván
AU  - Julián-López, Beatriz
PY  - 2025
TI  - Advancing Scalability and Sustainability of Perovskite Light-Emitting Diodes Through the Microwave Synthesis of Nanocrystals
JO  - Energy & Environmental Materials
SN  - 2575-0348
VL  - 8
IS  - 1
AB  - In recent years, perovskite light-emitting diodes have witnessed a remarkable evolution in both efficiency and luminance levels. Nonetheless, the production of such devices typically relies on protracted synthesis procedures at elevated temperatures and vacuum/inert conditions (e.g. hot-injection synthesis), thus rendering them technically unsuitable for extensive display and/or lighting applications manufacturing. Although alternative synthetic protocols have been proposed, e.g. ligand-assisted reprecipitation, ultrasonic and microwave-based methods, their suitability for the construction of high-performing light-emitting diodes has been reported in only a few studies. In this study, we demonstrate the fabrication of highly efficient lighting devices based on CsPbBr3 colloidal perovskite nanocrystals synthesized by a fast, energetically efficient, and up-scalable microwave-assisted method. These nanocrystals exhibit an impressive photoluminescence quantum yield of 66.8% after purification, with a very narrow PL spectrum centered at 514 nm with a full width at half-maximum of 20 nm. Similarly, the PeLEDs achieve a maximum external quantum efficiency of 23.4%, a maximum current efficiency of 71.6 Cd A−1, and a maximum luminance level that exceeds 4.7 × 104 Cd m−2. Additionally, a significantly lower energy consumption for microwave-mediated synthesis compared with hot injection is demonstrated. These findings suggest that this synthetic procedure emerges as an outstanding and promising method towards a scalable and sustainable fabrication of high-quality perovskite light-emitting diodes.
UR  - https://doi.org/10.1002/eem2.12810
DO  - 10.1002/eem2.12810