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Photoluminescence enhancement of perovskites nanocomposites using ion implanted silver nanoparticles
Chemical Physics Letters ( IF 2.8 ) Pub Date : 2020-09-17 , DOI: 10.1016/j.cplett.2020.137995
Shahid Iqbal , Masoud Shabaninezhad , Abubkr Abuhagr , Maryam Vaghefi , Guda Ramakrishna , Asghar Kayani

Metal enhanced photoluminescence by 70 keV Ag ions implanted at various fluences in quartz substrates was studied using drop casted CsPbX (X = Br3, I3, BrI2) perovskites. Concentration and depth profile of the implanted Ag was determined by Rutherford Backscattering Spectrometry. Ag nanoparticles existence was confirmed by optical absorption spectroscopy. Photoluminescence enhancement was obtained using steady state photoluminescence spectroscopy and enhancement was observed for CsPbBrI2 and CsPbI3 reaching as high as 3.6 and 5.9 fold, respectively. Whereas, a 60% photoluminescence quenching was observed for CsPbBr3, which could be attributed to the non-radiative energy transfer from perovskite to nanoparticles.



中文翻译:

离子注入银纳米粒子增强钙钛矿纳米复合材料的光致发光

使用滴铸的CsPbX(X = Br 3,I 3,BrI 2)钙钛矿研究了通过以各种能量密度注入到石英基板中的70 keV Ag离子增强的金属发光。通过卢瑟福背散射光谱法确定注入的银的浓度和深度分布。通过光吸收光谱法确认了Ag纳米颗粒的存在。使用稳态光致发光光谱学获得了光致发光增强,并且观察到CsPbBrI 2和CsPbI 3增强分别达到3.6和5.9倍。而CsPbBr 3观察到60%的光致发光猝灭 这可能归因于钙钛矿到纳米粒子的非辐射能量转移。

更新日期:2020-09-20
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