Two-dimensional perovskite materials towards violet and ultraviolet light-emitting diodes

Manchen Hu; Natalia Murrietta; Junrui Lyu; Daniel N. Congreve

doi:10.1117/12.2676613

5 October 2023 Two-dimensional perovskite materials towards violet and ultraviolet light-emitting diodes

Manchen Hu, Natalia Murrietta, Junrui Lyu, Daniel N. Congreve

Proceedings Volume 12652, UV and Higher Energy Photonics: From Materials to Applications 2023; 1265207 (2023) https://doi.org/10.1117/12.2676613
Event: SPIE Nanoscience + Engineering, 2023, San Diego, California, United States

Abstract

Metal halide perovskites (MHPs) have established their prominence in the field of optoelectronics, exhibiting considerable potential for use in light-emitting diodes (LEDs) spanning the red, green, blue, and even near-infrared spectra. Despite this, the exploration of MHPs within the ultraviolet light emission domain remains comparatively underexplored. In this study, we exploit the inherent versatility of perovskite composition and dimensionality to address this research gap. By integrating long organic ligands and mixed halides, we fabricate two-dimensional (2D) MHP thin films capable of achieving a diverse range of bandgaps within the ultraviolet region. To enhance the coverage of these thin films, we introduce water-based additives and a two-step annealing process into the fabrication protocol. A variety of analytical techniques, including absorption and photoluminescence spectra analysis, along with atomic force microscopy, were employed to characterize these 2D perovskite thin films. Our findings underscore the vast potential of MHPs for ultraviolet light-emitting diodes. This work is aimed at inspiring further investigations in this promising yet under-studied domain, paving the way for novel advancements in realization of bright and efficient ultraviolet emitting technology.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Manchen Hu, Natalia Murrietta, Junrui Lyu, and Daniel N. Congreve "Two-dimensional perovskite materials towards violet and ultraviolet light-emitting diodes", Proc. SPIE 12652, UV and Higher Energy Photonics: From Materials to Applications 2023, 1265207 (5 October 2023); https://doi.org/10.1117/12.2676613

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