Perovskite Light-Emitting Diodes (PeLEDs): Emerging Technologies for Next-Generation Displays
A special issue of Photonics (ISSN 2304-6732). This special issue belongs to the section "Optoelectronics and Optical Materials".
Deadline for manuscript submissions: 31 January 2026 | Viewed by 8
Special Issue Editors
Interests: inorganic semiconductor nanomaterials; visible and near-infrared optical properties and optoelectronic devices
Interests: shape regulation of perovskite nanocrystals; self-assembly of polyhedral nanocrystals; perovskite light-emitting diodes
Interests: perovskite; quantum dots materials; light-emitting diodes
Special Issues, Collections and Topics in MDPI journals
Special Issue Information
Dear Colleagues,
The sustained development of halide perovskite light-emitting-diodes (LEDs), including various passivation strategies of emitting layers, device architecture optimization, and interface engineering, has propelled the external quantum efficiencies (EQEs) to above 30%, as well as operation stability to over 30,000 h (estimated half-lifetime at 100 cd m−2). The color gamut of highly emissive halide perovskite films can cover the full range of visible light and be extended to the near-infrared region by composition engineering. In addition, these films can be easily fabricated by the solution process at a low cost, which avoids the vacuum deposition process and is thus favorable for the commercialization of perovskite LEDs. However, the relatively poor stability (against UV light, heat, air, moisture, and biased voltage) and toxicity in halide perovskites are the critical issues to be considered in practical applications. The fundamental physical properties of halide perovskites, such as hot carrier cooling, photon recycling, and the formation of polarons, still require more thorough investigation.
A comprehensive understanding of the inherent (photo)physical properties of these intriguing materials and operation stability under real working conditions is of paramount importance in order for progress to be made.
This Special Issue aims to focus on the prospects and recent advancements in both perovskite emitters and LEDs. Special attention will be paid to various passivation strategies to improve the quality of perovskite polycrystalline films and ligand-engineered nanocrystals. Diverse materials science characterization, especially in situ visual observation techniques, will be applied to attain a direct understanding of ion migration and device degradation in perovskite LEDs. Electrically driven LEDs based on lead-free metal halide analogues will also be emphasized. We hope that this Special Issue will be helpful to explore state-of-the-art advances in halide perovskite materials and optoelectronics and promote interdisciplinary collaboration across diverse fields.
Dr. Dongxu Zhu
Dr. Ye Wu
Dr. Changting Wei
Guest Editors
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Keywords
- lead-free
- perovskite nanocrystals
- light output efficiency
- degradation mechanism
- large-scale display
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