Deep-blue light-emitting diodes based on perovskite single-crystal thin films.

ABSTRACT: Metal halide perovskite light-emitting diodes (LEDs) are transformative optoelectronic platforms due to their tunable emission, high color purity, and broad color gamut. Nevertheless, the realization of high-luminance blue LEDs, particularly in the deep-blue spectral region, remains challenging compared to their green and red counterparts. This disparity is primarily attributed to the impaired charge transport kinetics and severe nonradiative recombination, both induced by the structural defects in wide-bandgap perovskites. Here, we address this issue through in situ growth of deep-blue-emitting perovskite single-crystal thin films (SCTFs). The resulting SCTFs exhibit exceptional crystallographic orientation, long-range structural ordering, and atomic-level smooth surfaces with a root mean

SUBMITTER: Zhu D 

PROVIDER: S-EPMC12694027 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature