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Facile Synthesis of Colloidal Lead Halide Perovskite Nanoplatelets via Ligand-Assisted Reprecipitation
Published on: October 1, 2019
12.8K
Lead-Free Perovskite Light-Emitting Diodes.
Weidong Tang1, Shengnan Liu1, Gan Zhang1
1State Key Laboratory of Extreme Photonics and Instrumentation, College of Optical Science and Engineering, International Research Center for Advanced Photonics, Zhejiang University, Hangzhou, China.
Advanced Materials (Deerfield Beach, Fla.)
|October 25, 2024
Summary
Lead-free perovskites offer eco-friendly alternatives for light-emitting diodes (PeLEDs). This review analyzes tin-based variants and strategies for stable, efficient, and tunable lead-free PeLEDs.
Area of Science:
- Materials Science
- Optoelectronics
- Solid-State Chemistry
Background:
- Metal halide perovskites are promising for light-emitting applications.
- Lead-based perovskite light-emitting diodes (PeLEDs) show high efficiency (>30% EQE) and operational stability.
- Concerns regarding lead toxicity drive the search for eco-friendly alternatives.
Purpose of the Study:
- To review the properties of various lead-free perovskite emitters.
- To highlight advancements in tin-based perovskite variants.
- To discuss strategies for improving lead-free PeLED performance and stability.
Main Methods:
- Analysis of properties of diverse lead-free perovskite emitters.
- Review of recent progress in crystallization processes and device configurations.
- Examination of challenges and proposed solutions for stable operation.
Main Results:
- Tin-based perovskites are a well-reported and promising lead-free option.
- Refined crystallization and device optimization enhance efficiency.
- Strategies for stable operation are being developed.
Conclusions:
- Lead-free perovskites are viable eco-friendly alternatives to lead-based PeLEDs.
- Further research can lead to extended spectral range and greener deposition techniques.
- Exploration of novel materials will advance lead-free PeLED technology.
