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Highly Enhanced Normalized‐Volume Multiphoton Absorption in CsPbBr3 2D Nanoplates
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2018-08-29 , DOI: 10.1002/adom.201800843 Tingchao He 1 , Junzi Li 1 , Xin Qiu 1 , Shuyu Xiao 1 , Cheng Yin 2 , Xiaodong Lin 1
Advanced Optical Materials ( IF 8.0 ) Pub Date : 2018-08-29 , DOI: 10.1002/adom.201800843 Tingchao He 1 , Junzi Li 1 , Xin Qiu 1 , Shuyu Xiao 1 , Cheng Yin 2 , Xiaodong Lin 1
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All‐inorganic perovskite nanocrystals (NCs) have attracted considerable attention due to their extensive photonic and optoelectronic properties. These NCs are shown to exhibit strong multiphoton absorption (MPA). However, studies on the MPA properties of perovskite NCs are only conducted on weakly confined perovskite cubic NCs, while the relevant influences of the geometry are never discussed. To the best of knowledge, this report describes the first comparison of the MPA properties of CsPbBr3 2D nanoplates (2D NPs) and cubic NCs. Based on the experimental results, it can be concluded that stronger quantum confinement effect of 2D NPs will strongly enhance their MPA with outstanding normalized‐volume two‐ and three‐photon absorption cross sections up to 1561 GM nm−3 and 7.2 × 10−78 cm6 s2 photon−2 nm−3, respectively. This work demonstrates that CsPbBr3 2D NPs are good candidates for exploring the influences of quantum confinement on MPA properties of perovskite NCs, which are also highly suitable for the applications of multiphoton imaging and nonlinear optoelectronics.
中文翻译：
CsPbBr3 2D纳米板中高度增强的归一化体积多光子吸收
全无机钙钛矿纳米晶体（NCs）由于其广泛的光子和光电特性而备受关注。这些NCs表现出强大的多光子吸收（MPA）。但是，钙钛矿型NC的MPA特性研究仅在弱约束的钙钛矿立方型NC上进行，而几何形状的相关影响则从未讨论过。据我所知，本报告描述了CsPbBr 3 2D纳米板（2D NP）和立方NC的MPA特性的首次比较。根据实验结果，可以得出结论，二维NP的更强的量子限制效应将以高达1561 GM nm -3和7.2×10的出色的归一化体积二和三光子吸收截面来显着增强其MPA。分别为-78 cm 6 s 2光子-2 nm -3。这项工作表明，CsPbBr 3 2D NPs是探索量子限制对钙钛矿NCs MPA性能的影响的良好候选者，它们也非常适合多光子成像和非线性光电应用。
更新日期：2018-08-29
中文翻译：
CsPbBr3 2D纳米板中高度增强的归一化体积多光子吸收
全无机钙钛矿纳米晶体（NCs）由于其广泛的光子和光电特性而备受关注。这些NCs表现出强大的多光子吸收（MPA）。但是，钙钛矿型NC的MPA特性研究仅在弱约束的钙钛矿立方型NC上进行，而几何形状的相关影响则从未讨论过。据我所知，本报告描述了CsPbBr 3 2D纳米板（2D NP）和立方NC的MPA特性的首次比较。根据实验结果，可以得出结论，二维NP的更强的量子限制效应将以高达1561 GM nm -3和7.2×10的出色的归一化体积二和三光子吸收截面来显着增强其MPA。分别为-78 cm 6 s 2光子-2 nm -3。这项工作表明，CsPbBr 3 2D NPs是探索量子限制对钙钛矿NCs MPA性能的影响的良好候选者，它们也非常适合多光子成像和非线性光电应用。
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