碘化铯铅钙钛矿纳米粒子在CTAB配体存在下具有更高的稳定性和更好的光致发光量子产率。

IF 3.2 3区 化学 Q3 BIOCHEMISTRY & MOLECULAR BIOLOGY
Photochemical & Photobiological Sciences Pub Date : 2023-09-01 Epub Date: 2023-06-04 DOI:10.1007/s43630-023-00439-9
Christina Al-Tawil, Riham El Kurdi, Digambara Patra
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引用次数: 0

摘要

无机卤化物钙钛矿,如CsPbI3,具有独特的光电性质,这使其成为多种应用的有前途的候选者。不幸的是,这些钙钛矿经历了快速的化学分解并转变为黄色δ相。因此,合成稳定的碘化铯铅钙钛矿仍然是一个具有实际挑战性的领域,必须开发用于光伏应用的稳定黑相。为此,使用表面活性剂配体来控制无机钙钛矿CsPbI3纳米颗粒的合成。在此,我们首先证明了添加十六烷基三甲基溴化铵(CTAB)或二氧化硅纳米颗粒来维持卤化铅钙钛矿的新途径;α-CsPbI3相的稳定性,以及随后提高其光致发光量子产率(PLQY)。利用紫外-可见吸收光谱、荧光光谱、扫描电子显微镜、热重分析和X射线衍射技术对制备的钙钛矿进行了表征。结果表明,在CTAB存在下,α-CsPbI3相具有更高的稳定性,PLQY%提高到99%。此外,CsPbI3纳米颗粒的光致发光强度更高,并且在CTAB存在下保持更长的持续时间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Higher stability and better photoluminescence quantum yield of cesium lead iodide perovskites nanoparticles in the presence of CTAB ligand.

Inorganic halide perovskites, such as CsPbI3, have unique optoelectronic properties which made them promising candidates for several applications. Unfortunately, these perovskites undergo rapid chemical decomposition and transformation into yellow δ-phase. Thus, the synthesis of stable cesium lead iodide perovskites remains an actual challenging field and it is imperative to develop a stabilized black phase for photovoltaic applications. For this purpose, a surfactant ligand was used to control the synthesis of inorganic perovskite CsPbI3 nanoparticles. Herein we demonstrate a new avenue for lead halide perovskites with the addition of either hexadecyltrimethylammonium bromide (CTAB) or silica nanoparticles to maintain in the first place; the stability of the α-CsPbI3 phase, and later on to boost their photoluminescence quantum yield (PLQY). The prepared perovskites were characterized using UV-visible absorption spectroscopy, fluorescence spectroscopy, scanning electron microscopy, thermogravimetric analysis and X-Ray diffraction technique. Results show higher stability of α-CsPbI3 phase and improvement in PLQY % to reach 99% enhancement in presence of CTAB. Moreover, the photoluminescence intensity of CsPbI3 nanoparticles was higher and was maintained for a longer duration in the presence of CTAB.

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来源期刊
Photochemical & Photobiological Sciences
Photochemical & Photobiological Sciences 生物-生化与分子生物学
CiteScore
5.60
自引率
6.50%
发文量
201
审稿时长
2.3 months
期刊介绍: A society-owned journal publishing high quality research on all aspects of photochemistry and photobiology.
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