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《第三届新型太阳能电池学术研讨会论文集》2016年
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Nonlinear Optical Response of Organic-Inorganic Halide Perovskites

Rui Zhang  Jiandong Fan  Haohai Yu  Huaijin Zhang  Jiyang Wang  Yaohua Mai  
【摘要】:Herein,we reported the nonlinear optical response of triiodide(CH_3NH_3PbI_3) and mixed halide(CH_3NH_3PbI_(3-x)Cl_x) perovskite thin films.The results demonstrated that they have large nonlinear refractive index(NRI),three orders of magnitude larger than that of silicon.Particularly,the NRI of CH_3NH_3PbI_(3-x)Cl_x is more than two times larger in comparison to that of CH_3NH_3PbI_3.Likewise,both of them have been proven to possess saturable absorption effects with small nonlinear absorption coefficients which indicate that they can maintain excellent absorption under high-intensity irradiation and are favorable to modulators towards large-energy pulsed laser.Considering the saturable absorption effect,we demonstrated a pulsed laser with the perovskite as a pulse modulator.These results above indicate the potential for perovskites to be employed in nonlinear optoelectronic devices.
【作者单位】:Institute of Crystal Materials,Shandong University Institute of New Energy Technology,Jinan University
【分类号】:TB383.2;TN248
【正文快照】:
Figure 1.Nonlinear absorption of CH3NH3Pb I3 and CH3NH3Pb I3-xClx samples under irradiation of a1064 nm pulsed laser(a)and(b);(c)Average output power with the increase of incident pumppower with the threshold of 5.2 W.(d)Pulse train with the repetition r

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