期刊
NANOSCALE
卷 9, 期 25, 页码 8695-8702出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7nr02234d
关键词
-
类别
资金
- National Natural Science Foundation (NSF) under the ECCS-CAREER [1350800]
- Directorate For Engineering
- Div Of Electrical, Commun & Cyber Sys [1350800] Funding Source: National Science Foundation
Integration of colloidal nanocrystal quantum dots (NQDs) with strongly absorbing semiconductors offers the possibility of developing optoelectronic and photonic devices with new functionalities. We examine the process of energy transfer (ET) from photoactive CdSe/ZnS core/shell NQDs into lead-halide perovskite polycrystalline films as a function of distance from the perovskite surface using time-resolved photoluminescence (TRPL) spectroscopy. We demonstrate near-field electromagnetic coupling between vastly dissimilar excitation in two materials that can reach an efficiency of 99% at room temperature. Our experimental results, combined with electrodynamics modeling, reveal the leading role of non-radiative ET at close distances, augmented by the waveguide emission coupling and light reabsorption at separations >10 nm. These results open the way to combining materials with different dimensionalities to achieve novel nanoscale architectures with improved photovoltaic and light emitting functionalities.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据