Lead-Free Perovskite Light-Emitting Diodes With Tunable Near-Infrared EmissionLai, May LingTay, TimothySadhanala, AdityaDutton, SianLi, GuangruTan, ZhiKuangFriend, Richard H
Tin (Sn)-based perovskites are promising for realizing lead-free perovskite light-emitting diodes1,2, yet achieving high efficiency devices remains a significant challenge due to the presence of high density of defects in Sn perovskites3,4. The formation
This made the creation of a perovskite-silicon tandem solar cell with 31.6% efficiency, achieved on a small scale of 1cm². While researchers explored lead-free alternatives, they faced challenges in producing efficient solar cells from non-toxic materials. Despite extensive trials, no lead-free...
Color-pure red light-emitting diodes based on two-dimensional lead-free perovskites. Sci. Adv. 6, eabb0253 (2020). Article ADS CAS PubMed PubMed Central Google Scholar Zhang, F. et al. Vapor-assisted in situ recrystallization for efficient tin-based perovskite light-emitting diodes. Adv. ...
and Cu2+could be used as an alternative ion to Pb2+in perovskites to constitute a new lead-free perovskite structure [56,57,58,59,60,61,62,63]. The introduction of these metal cations not only increases the diversity of perovskite species, but also enhances environmentally friendly features...
And the time it takes to verify pipes this way makes it unlikely that urban areas will be lead-free on the EPA's timeline. FromScience Daily In contrast, the new supramolecular ink -- which belongs to the ionic halide perovskite family -- offers a lead-free formulation without compromising...
LEAD-FREE PEROVSKITE SOLAR CELLS.The article discusses the perovskite-based solar cells for converting sunlight to electricity including the that the devices' absorption profiles can further be improved to capture more of the visible portion of the spectrum by using mixed iodide-bromide perovskite.M....
The last step is the removal of lead from the perovskite composition to meet the worldwide-adopted restriction of the use of hazardous substances. Here, we provide a critical overview of the current research and an outlook of the paths toward lead-free perovskite for solar energy. Summary ...
The team synthesized lead-free 3D perovskite NCs in 2017, and the new material is more luminescent, said Han. When the new NCs are used in LED devices and solar panels, they will cut the cost, improve energy efficiency and reduce risks to the environment and humans, Han added....
Herein, we review recent advances on lead-free perovskite photodetectors, analyzing the principle when designing new materials, highlighting some remarkable progress which are comparable even superior to lead-based photodetectors. Furthermore, we outlook their potential strategy in optical communication, ...