基于绿色、廉价荧光粉的白光LEDs是照明和显示领域重要发展方向之一，引起了研究者广泛关注。UV激发、高效、无掺杂、单组分白光材料的可控制备是新型荧光粉领域的研究热点和难点。在水合氧化铝杂化纳米晶LEDs的初步研究基础上，本项目拟以有机／无机金属氧化物杂化纳米晶为研究对象，以获得高效白光荧光粉为目的，围绕金属氧化物杂化纳米晶的白光辐射机制和有机相-无机相相互作用机理两个科学问题，通过消光光谱、激发发射光谱、荧光动力学过程及量子效率表征，确定产生高效白光辐射的最佳条件； 通过对杂化纳米晶形貌、尺寸及结构的控制，调控白光辐射特性; 通过波长选择激发确定不同发光中心的起源与能级结构；深入探索有机分子与金属离子配位对发光辐射跃迁的调制规律，建立杂化纳米晶中有机相与无机相的能量传递模型，揭示产生高效白光辐射的物理本质。本项目不仅具有重要的基础理论探索价值, 还将为开发新型白光LEDs提供可行的途径。

Recently, the development of enviroment-friendly and price-competitive phosphors for white light-emitting diodes (WLEDs) appication was highly investigated in the lighting and display research field. However, construction and tunable optical control of the efficient, nondopant and single component white-light emitting materials pumped by UV light is also a challenge for the researcher. In this project, we aim to design the efficient organic-inorganic metal oxide nanophorsphos rely on simple one-pot non-aquouse synthesis method and to realize its application for the WLEDs. This lies in the fact that our developed WLEDs based on benzoate capped beomite nanoplants. We will discuss two main scientific issues including the mechanism of white light emission and the interaction between organic and inorganic phase. Optical properties of these nanohybrids will be quantified through the extinctive spectrum, excitation and emission spectrum, luminecent dynamic process as well as quantum efficiency measurement, and the optimal condition for the white-light emitting will be also achieved. We will further confirm the various emitting energy states related to the organic and inorganic phase utilizing the frequency selective-excitation techniques and temperature-dependent fluorescence lifetime. Moreover, the luminescent radiative rate influenced by the coordiation between organic molecule and metal ions, as well as the energy transfer process between organic and inorganic phase will be discussed and employed, and then the physcal model will be also establised. The current project has not only the important basic theoretical values, but aslo provide the meaningful and available method for developing the efficient WLEDs.