Lê Khan, Heshmati Niusha, Mathur Sanjay
Institute of Inorganic Chemistry, University of Cologne, Greinstraße 6, 50939, Cologne, Germany.
Nano Converg. 2023 Oct 13;10(1):47. doi: 10.1186/s40580-023-00395-1.
Light emitting diodes (LEDs) have become part of numerous electrical and electronic systems such as lighting, displays, status indicator lamps and wearable electronics. Owing to their excellent optoelectronic properties and deposition via simple solution process, metal halide perovskites possess unique potential for developing halide perovskite-based LEDs (PeLEDs) with superior photoluminescence efficiencies leading to external quantum efficiencies beyond 20% for PeLEDS. However, the limited durability, high operative voltages, and challenges of scale-up are persisting barriers in achieving required technology readiness levels. To build up the existing knowledge and raise the device performance this review provides a state-of-the-art study on the properties, film and device fabrication, efficiency, and stability of PeLEDs. In terms of commercialization, PeLEDs need to overcome materials and device challenges including stability, ion migration, phase segregation, and joule heating, which are discussed in this review. We hope, discussions about the strategies to overcome the stability issues and enhancement the materials intrinsic properties towards development more stable and efficient optoelectronic devices can pave the way for scalability and cost-effective production of PeLEDs.
发光二极管（LED）已成为众多电气和电子系统的一部分，如照明、显示器、状态指示灯和可穿戴电子产品。由于其优异的光电性能以及可通过简单的溶液工艺进行沉积，金属卤化物钙钛矿在开发基于卤化物钙钛矿的发光二极管（PeLED）方面具有独特潜力，这种发光二极管具有卓越的光致发光效率，可使PeLED的外量子效率超过20%。然而，耐久性有限、工作电压高以及扩大规模的挑战仍然是实现所需技术成熟度水平的障碍。为了积累现有知识并提高器件性能，本综述对PeLED的性质、薄膜和器件制造、效率以及稳定性进行了最新研究。在商业化方面，PeLED需要克服包括稳定性、离子迁移、相分离和焦耳热在内的材料和器件挑战，本综述将对此进行讨论。我们希望，关于克服稳定性问题以及增强材料固有特性以开发更稳定、高效光电器件的策略的讨论，能够为PeLED的可扩展性和具有成本效益的生产铺平道路。
