期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 118, 期 5, 页码 2766-2775出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp409620w
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资金
- European Union
- Greek national funds through the Operational Program Education and Lifelong Learning of the National Strategic Reference Framework (NSRF)-Research Funding Program: Heracleitus II through the European Social Fund
- Greek national funds through the Operational Program Education and Lifelong Learning of the National Strategic Reference Framework (NSRF)-Research Funding Program: THALIS: Investing in knowledge society through the European Social Fund
Synthesis and characterization of the nonlinear optical properties of a class of semiconductors based on hybrid organic-inorganic two-dimensional semiconductors are being reported. A new simple synthetic route for the preparation and stabilization of lead iodide quantum dots (QD), based on (PbI6)(4-) structural units, provided a variety of appropriate solutions of zero-dimensional (OD) and suspensions of two-dimensional (2D) hybrid organic-inorganic semiconductors. The third-order nonlinear optical properties of both semiconducting systems were studied by means of the Z-scan technique under visible (532 nm) and infrared (1064 nm), 35 Ps and 4 ns laser excitation. The third-order susceptibility chi((3)) and second-order hyperpolarizability gamma were determined and are reported for the first time, showing gigantic enhancement in the case of the 2D material, reaching at least 5 orders of magnitude higher NLO response than that of the OD material QDs, suggesting their potential for photonic and optoelectronic applications and devices.
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