Kim Do-Young, Jung Jae-Geun, Lee Ye-Ji, Park Min-Ho
Department of Materials Science and Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea.
Department of Green Chemistry and Materials Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-gu, Seoul 06978, Republic of Korea.
Materials (Basel). 2023 Sep 20;16(18):6317. doi: 10.3390/ma16186317.
Lead-based halide perovskite nanocrystals (PeNCs) have demonstrated remarkable potential for use in light-emitting diodes (LEDs). This is because of their high photoluminescence quantum yield, defect tolerance, tunable emission wavelength, color purity, and high device efficiency. However, the environmental toxicity of Pb has impeded their commercial viability owing to the restriction of hazardous substances directive. Therefore, Pb-free PeNCs have emerged as a promising solution for the development of eco-friendly LEDs. This review article presents a detailed analysis of the various compositions of Pb-free PeNCs, including tin-, bismuth-, antimony-, and copper-based perovskites and double perovskites, focusing on their stability, optoelectronic properties, and device performance in LEDs. Furthermore, we address the challenges encountered in using Pb-free PeNC-LEDs and discuss the prospects and potential of these Pb-free PeNCs as sustainable alternatives to lead-based PeLEDs. In this review, we aim to shed light on the current state of Pb-free PeNC LEDs and highlight their significance in driving the development of eco-friendly LED technologies.
铅基卤化物钙钛矿纳米晶体（PeNCs）已展现出在发光二极管（LED）中应用的巨大潜力。这是由于它们具有高光致发光量子产率、缺陷容忍度、可调节的发射波长、色纯度以及高器件效率。然而，由于有害物质指令的限制，铅的环境毒性阻碍了它们的商业可行性。因此，无铅PeNCs已成为开发环保型LED的一种有前景的解决方案。这篇综述文章详细分析了无铅PeNCs的各种组成，包括锡基、铋基、锑基和铜基钙钛矿以及双钙钛矿，重点关注它们在LED中的稳定性、光电特性和器件性能。此外，我们阐述了使用无铅PeNC-LED时遇到的挑战，并讨论了这些无铅PeNCs作为基于铅的PeLEDs的可持续替代品的前景和潜力。在这篇综述中，我们旨在阐明无铅PeNC LED的当前状态，并突出它们在推动环保型LED技术发展中的重要性。
