Wang Hao, Zhang Chunqian, Huang Wenqi, Zou Xiaoping, Chen Zhenyu, Sun Shengliu, Zhang Lixin, Li Junming, Cheng Jin, Huang Shixian, Gu Mingkai, Chen Xinyao, Guo Xin, Gui Ruoxia, Wang Weimin
Beijing Key Laboratory for Sensor, Beijing Information Science and Technology University, Beijing 100101, China.
Beijing Advanced Innovation Center for Materials Genome Engineering, Beijing Information Science and Technology University, Beijing 100101, China.
Phys Chem Chem Phys. 2022 Nov 23;24(45):27585-27605. doi: 10.1039/d2cp02451a.
In recent years, lead halide perovskite materials have attracted great interest and are widely used in solar cells and light-emitting devices due to their high photoelectronic quantum yield, high color purity, high defect tolerance, long diffusion length, high carrier mobility, and bandgap tunability. However, the application of lead halide perovskites is limited due to the presence of Pb, making lead-free perovskites an important substitute due to their same crystal structure and similar properties. Although some reports have been made on lead-free perovskite materials, there are still great challenges to realize their application due to their poor stability, easy phase transition, and low photoelectric conversion efficiency. Here, we mainly summarize the development and application of ABX-type lead-free halide perovskite materials, especially in optoelectronic devices. The article first introduces the lattice and energy band structure, the optoelectronic properties of lead-free perovskites, including the research method of lead-free perovskites, and then analyzes the reasons for the low luminous efficiency and poor stability of lead-free perovskite materials. Second, the development history and current situation of lead-free perovskites in different optoelectronic device applications are summarized. Finally, we present the challenges and prospects for the future development of lead-free perovskites.
近年来，卤化铅钙钛矿材料因其高光电子量子产率、高色纯度、高缺陷容忍度、长扩散长度、高载流子迁移率和带隙可调性而备受关注，并广泛应用于太阳能电池和发光器件中。然而，由于铅的存在，卤化铅钙钛矿的应用受到限制，这使得无铅钙钛矿因其相同的晶体结构和相似的性质而成为重要的替代品。尽管已经有一些关于无铅钙钛矿材料的报道，但由于其稳定性差、易相变和光电转换效率低，实现其应用仍面临巨大挑战。在这里，我们主要总结了ABX型无铅卤化钙钛矿材料的发展和应用，特别是在光电器件中的应用。文章首先介绍了晶格和能带结构、无铅钙钛矿的光电性质，包括无铅钙钛矿的研究方法，然后分析了无铅钙钛矿材料发光效率低和稳定性差的原因。其次，总结了无铅钙钛矿在不同光电器件应用中的发展历史和现状。最后，我们提出了无铅钙钛矿未来发展面临的挑战和前景。
