典型文献
Large bandgap oscillations in two-dimensional Dion-Jacobson phase perovskites caused by coherent longitudinal acoustic phonons[Invited]
文献摘要:
Two-dimensional Dion-Jacobson[D-J]phase perovskites are prospective photovoltaic and optoelectronic materials.To study their mechanical properties and carrier-lattice interactions,we conduct femtosecond spectroscopic experiments on the films of a D-J perovskite.After optical excitation,a~33 meV bandgap oscillation is observed in the film by transient absorption spectroscopy.With the help of transient reflection methods,we reveal that the oscillation originates from the transport of coherent longitudinal acoustic phonons through the film.Large bandgap oscillation indicates a strong coupling between carriers and lattice,and significant bandgap modulation by strains in D-J perovskites.
文献关键词:
中图分类号:
作者姓名:
Fengke Sun;Boning Wu;Shengye Jin
作者机构:
Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China
文献出处:
引用格式:
[1]Fengke Sun;Boning Wu;Shengye Jin-.Large bandgap oscillations in two-dimensional Dion-Jacobson phase perovskites caused by coherent longitudinal acoustic phonons[Invited])[J].中国光学快报(英文版),2022(10):55-59
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AB值:
0.623383
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