Xin Li1, Xupeng Gao1, Xiangtong Zhang2, Xinyu Shen1, Min Lu1, Jinlei Wu1, Zhifeng Shi3, Vicki L Colvin4, Junhua Hu5, Xue Bai1, William W Yu6, Yu Zhang1. 1. State Key Laboratory of Integrated Optoelectronics and College of Electronic Science and Engineering Jilin University Changchun 130012 China. 2. Key Laboratory for Special Functional Materials of Ministry of Education National & Local Joint Engineering Research Centre for High-Efficiency Display and Lighting Technology School of Materials and Engineering Collaborative Innovation Centre of Nano Functional Materials and Applications Henan University Kaifeng 475000 China. 3. Key Laboratory of Materials Physics of Ministry of Education Department of Physics and Engineering Zhengzhou University Zhengzhou 450052 China. 4. Department of Chemistry Brown University Providence RI 02912 USA. 5. State Centre for International Cooperation on Designer Low-carbon & Environmental Materials School of Materials Science and Engineering Zhengzhou University Zhengzhou 450001 China. 6. Department of Chemistry and Physics Louisiana State University Shreveport LA 71115 USA.
Abstract
Lead-based halide perovskites have received great attention in light-emitting applications due to their excellent properties, including high photoluminescence quantum yield (PLQY), tunable emission wavelength, and facile solution preparation. In spite of excellent characteristics, the presence of toxic element lead directly obstructs their further commercial development. Hence, exploiting lead-free halide perovskite materials with superior properties is urgent and necessary. In this review, the deep-seated reasons that benefit light emission for halide perovskites, which help to develop lead-free halide perovskites with excellent performance, are first emphasized. Recent advances in lead-free halide perovskite materials (single crystals, thin films, and nanocrystals with different dimensionalities) from synthesis, crystal structures, optical and optoelectronic properties to applications are then systematically summarized. In particular, phosphor-converted LEDs and electroluminescent LEDs using lead-free halide perovskites are fully examined. Ultimately, based on current development of lead-free halide perovskites, the future directions of lead-free halide perovskites in terms of materials and light-emitting devices are discussed.
Lead-based n class="Chemical">halide perovskites have received great attention in light-emitting applications due to their excellent properties, including high photoluminescence quantum yield (PLQY), tunable emission wavelength, and facile solution preparation. In spite of excellent characteristics, the presence of toxic element lead directly obstructs their further commercial development. Hence, exploiting lead-free halide perovskite materials with superior properties is urgent and necessary. In this review, the deep-seated reasons that benefit light emission for halide perovskites, which help to develop lead-free halide perovskites with excellent performance, are first emphasized. Recent advances in lead-free halide perovskite materials (single crystals, thin films, and nanocrystals with different dimensionalities) from synthesis, crystal structures, optical and optoelectronic properties to applications are then systematically summarized. In particular, phosphor-converted LEDs and electroluminescent LEDs using lead-free halide perovskites are fully examined. Ultimately, based on current development of lead-free halide perovskites, the future directions of lead-free halide perovskites in terms of materials and light-emitting devices are discussed.
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