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Brightly Luminescent and Color-Tunable Formamidinium Lead Halide Perovskite FAPbX3 (X = Cl, Br, I) Colloidal Nanocrystals
Nano Letters ( IF 9.6 ) Pub Date : 2017-04-11 00:00:00 , DOI: 10.1021/acs.nanolett.6b04781
Ievgen Levchuk 1, 2 , Andres Osvet 1 , Xiaofeng Tang 1, 3 , Marco Brandl 4 , José Darío Perea 1 , Florian Hoegl 1 , Gebhard J. Matt 1 , Rainer Hock 4 , Miroslaw Batentschuk 1 , Christoph J. Brabec 1, 2, 3, 5
Nano Letters ( IF 9.6 ) Pub Date : 2017-04-11 00:00:00 , DOI: 10.1021/acs.nanolett.6b04781
Ievgen Levchuk 1, 2 , Andres Osvet 1 , Xiaofeng Tang 1, 3 , Marco Brandl 4 , José Darío Perea 1 , Florian Hoegl 1 , Gebhard J. Matt 1 , Rainer Hock 4 , Miroslaw Batentschuk 1 , Christoph J. Brabec 1, 2, 3, 5
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In the past few years, hybrid organic–inorganic and all-inorganic metal halide perovskite nanocrystals have become one of the most interesting materials for optoelectronic applications. Here, we report a facile and rapid room temperature synthesis of 15–25 nm formamidinium CH(NH2)2PbX3 (X = Cl, Br, I, or mixed Cl/Br and Br/I) colloidal nanocrystals by ligand-assisted reprecipitation (LARP). The cubic and platelet-like nanocrystals with their emission in the range of 415–740 nm, full width at half-maximum (fwhm) of 20–44 nm, and radiative lifetimes of 5–166 ns enable band gap tuning by halide composition as well as by their thickness tailoring; they have a high photoluminescence quantum yield (up to 85%), colloidal and thermodynamic stability. Combined with surface modification that prevents degradation by water, this nanocrystalline material is an ideal candidate for optoelectronic devices and applications. In addition, optoelectronic measurements verify that the photodetector based on FAPbI3 nanocrystals paves the way for perovskite quantum dot photovoltaics.
中文翻译：
明亮的发光和可彩色调节的甲Hal卤化钙钛矿型FAPbX 3（X = Cl，Br，I）胶体纳米晶体
在过去的几年中，有机-无机和全无机金属卤化物钙钛矿纳米晶体的杂化已成为光电应用中最有趣的材料之一。在这里，我们报告15-25 nm甲form CH（NH 2）2 PbX 3的快速简便的室温合成（X = Cl，Br，I或混合的Cl / Br和Br / I）胶体纳米晶体，通过配体辅助再沉淀（LARP）。立方和片状纳米晶体的发射范围为415–740 nm，半峰全宽（fwhm）为20–44 nm，辐射寿命为5–166 ns，可通过卤化物成分对带隙进行调谐以及通过他们的厚度定制；它们具有很高的光致发光量子产率（高达85％），胶体和热力学稳定性。结合防止水降解的表面改性，这种纳米晶体材料是光电器件和应用的理想选择。此外，光电测量结果证明，基于FAPbI 3纳米晶体的光电探测器为钙钛矿量子点光伏技术铺平了道路。
更新日期：2017-04-11
中文翻译：
明亮的发光和可彩色调节的甲Hal卤化钙钛矿型FAPbX 3（X = Cl，Br，I）胶体纳米晶体
在过去的几年中，有机-无机和全无机金属卤化物钙钛矿纳米晶体的杂化已成为光电应用中最有趣的材料之一。在这里，我们报告15-25 nm甲form CH（NH 2）2 PbX 3的快速简便的室温合成（X = Cl，Br，I或混合的Cl / Br和Br / I）胶体纳米晶体，通过配体辅助再沉淀（LARP）。立方和片状纳米晶体的发射范围为415–740 nm，半峰全宽（fwhm）为20–44 nm，辐射寿命为5–166 ns，可通过卤化物成分对带隙进行调谐以及通过他们的厚度定制；它们具有很高的光致发光量子产率（高达85％），胶体和热力学稳定性。结合防止水降解的表面改性，这种纳米晶体材料是光电器件和应用的理想选择。此外，光电测量结果证明，基于FAPbI 3纳米晶体的光电探测器为钙钛矿量子点光伏技术铺平了道路。
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