金属卤化物杂化钙钛矿材料及其光电器件的研究进展

Research progress of metal halide hybrid perovskite materials and optoelectronic devices

AMX3型卤化物杂化钙钛矿材料因其可见光吸收能力强、发光单色性好、激子束缚能低、载流子寿命长和迁移率高等优异的光电性能,在太阳能电池、发光二极管和光电探测器等应用领域具有重大商业价值。重点介绍AMX3型卤化物杂化钙钛矿材料及其应用。首先简述了该材料的晶体结构、组成及其光电特性,探讨了其在光电领域有突出表现的原因;然后详细介绍了钙钛矿太阳能电池、发光二极管和光电探测器三种器件的结构、工作原理和研究进展,重点讨论了钙钛矿材料的带隙调节方法;最后指出了钙钛矿器件在商业化道路上所面临的主要挑战。

AMX3 halide hybrid perovskite materials have excellent photoelectric properties such as strong visible light absorption power,good luminous monochromaticity,low exciton binding energy,long carrier life time and high mobility coeffieient.Hence,they have great commercial value in some fields as solar cells,light-emitting diodes,and photodetectors.Here,AMX3halide hybrid perovskite materials and their applications were introduced system atically.Firstly,the crystal structure,chemical composition and optoelectronic properties of AMX3hybrid perovskite materials were described briefly,and the reasons for their outstanding performance in the optoelectronic field were discussed.Then,the structures,working principles and research progress of three kinds of optoelectronic perovskite devices(perovskite solar cell,light-emitting diode and optoelectronic device)were introduced in detail,and the bandgap adjustment method of perovskite materials was discussed emphatically.Finally,the main challenges faced by perovskite devices in commercial applications were pointed out.