摘要 : Recently, the newly-emerging lead-free metal-halide materials with lesstoxicity and superior optoelectronic properties have received wide attention asthe safer and potentially more robust alternatives to lead-based perovskitecount... 展开 Recently, the newly-emerging lead-free metal-halide materials with lesstoxicity and superior optoelectronic properties have received wide attention asthe safer and potentially more robust alternatives to lead-based perovskitecounterparts. Among them, ternary copper halides (TCHs) have become avital group due to their unique features, including abundant structuraldiversity, ease of synthesis, unprecedented optoelectronic properties, highabundance, and low cost. Although the recent efforts in this field have madecertain progresses, some scientific and technological issues still remainunresolved. Herein, a comprehensive and up-to-date overview of recentprogress on the fundamental characteristics of TCH materials and theirversatile applications is presented, which contains topics such as: i) crystaland electronic structure features and synthesis strategies; ii) mechanisms ofself-trapped excitons, luminescence regulation, and environmental stability;and iii) their burgeoning optoelectronic devices of phosphor-converted whitelight-emitting diodes (WLEDs), electroluminescent LEDs, anti-counterfeiting,X-ray scintillators, photodetectors, sensors, and memristors. Finally, thecurrent challenges together with future perspectives on the development ofTCH materials and applications are also critically described, which isconsidered to be critical for accelerating the commercialization of theserapidly evolving technologies. 收起