Superior multiphoton absorption properties in colloidal Mn-doped CsPbCl3 two-dimensional nanoplatelets
We have studied the two- and three-photon absorption (2PA and 3PA) properties of Mn-doped CsPbCl3 two-dimensional nanoplatelets (2D NPs) and cubic nanocrystals. Compared with their cubic counterparts, the Mn-doped 2D NPs exhibit stronger quantum confinement effects that can more efficiently enhance their dopant-carrier exchange interactions and multiphoton absorption. More specifically, the maximum volume-normalized 2PA and 3PA cross sections of the 2D NPs were 6.8 and 7.2 times greater than those of their cubic counterparts, respectively, reaching up to 1237 GM/nm3 in the visible light band and 2.24×10?78 cm6·s2·photon?2/nm3 in the second biological window, respectively.
基金项目：Shenzhen Basic Research Project of Science and Technology (JCYJ20150324141711581, JCYJ20170302142433007); Postgraduate Innovation Development Fund Project of Shenzhen University (PIDFP-ZR2018007).
Junzi Li：College of Physics and Energy, Shenzhen University, Shenzhen 518060, China
Xin Qiu：College of Physics and Energy, Shenzhen University, Shenzhen 518060, China
Shuyu Xiao：College of Physics and Energy, Shenzhen University, Shenzhen 518060, China
Xiaodong Lin：College of Physics and Energy, Shenzhen University, Shenzhen 518060, China
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Tingchao He, Junzi Li, Xin Qiu, Shuyu Xiao, and Xiaodong Lin, "Superior multiphoton absorption properties in colloidal Mn-doped CsPbCl3 two-dimensional nanoplatelets," Photonics Research 6(11), 1021-1027 (2018)