Lead-Free Layered Perovskites Boost Optoelectronics
A new review explores the potential of lead-free halide double perovskites (LFHDPs) as sustainable alternatives for optoelectronic devices like solar cells and LEDs. The authors establish a framework to link structural design to device performance, addressing current challenges like carrier mobility and bandgap limitations.
Why it matters
Developing lead-free perovskites is critical for the environmental sustainability of next-generation renewable energy and display technologies.
Perovskite materials have emerged as promising candidates for next-generation solar cells, light-emitting diodes, and photodetectors because of their remarkable optical and electronic properties. However, the widespread use of lead-containing perovskites has raised environmental and sustainability concerns. Lead-free halide double perovskites offer an attractive alternative, but their performance is strongly influenced by complex structural, electronic, and defect-related factors.
In this review, Soo-Yeon Yang and Hyojung Kim examine recent advances in 2D and quasi-2D LFHDPs, focusing on how structural design translates into material properties and ultimately device performance. The review goes beyond a conventional classification of perovskite compositions by establishing a structure-property-device performance framework.
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