光子玻璃多光子近红外量子剪裁调控基础研究

Luminescence and luminscent materials with quantum yield greater than unity can be widely applied in high-efficient luminescene, plasma display panel, efficient solar cells and so on. The proposal of this project is to carry out the fundamental investigation on the materials and fabracation techniques of multi-photon near-infrared (NIR) quantum cutting in photonic glasses.This project will focus on the fundamental investigation of fabrication, structural and optical properties, excitation and emission, energy transfer and conversion, downconversion and quantum cutting, quantum yield calculation and measurement of rare earth (RE) ions doped photonic glasses and continuous solid solution luminescent materials. To reveal certain new phenomena and laws of photonic materials and to obtain efficient downconversion luminescence and quantum cutting photonic materials, systemically investigation on crystallization and homogeneous distributiuon characteristics as well as excitation and emission properties of RE-doped photonic glasses will be employed. Meanwhile, the feasibility of efficient luminescence and modification of multi-photon NIR quantum cutting materials, and the baisc scientific methods of fabrication techniques and applications involved will also being investigated and discussed. It is excepted that this research could help researchers to better understand the material and physical mechanisms of luminescence, and could provide theoretical and technological supports for the design and development of RE-doped optical materials and related photonics devices, and thus promote the development of photonic glasses and device science and technology.

量子效率大于1的发光及材料有望在高效发光、等离子平板显示、高效太阳光电池等领域得到广泛应用。本项目以研究光子玻璃多光子近红外量子剪裁调控所涉及的新材料与新工艺基础问题为目标。着重研究和掌握掺稀土光子微晶玻璃和掺稀土连续固溶体发光材料的制备工艺、结构和物化特性、激发与发光、能量传递与转换、下转换发光与量子剪裁、量子效率的计算与实测等材料、物理和光学基本科学问题。探索光子微晶玻璃的高结晶化和均匀分布及其激发和发光特性评价方法，以期揭示光子材料所展现的一些新现象、新规律，获得高转换效率的下转换发光与量子剪裁光子材料。研究和评估多光子近红外量子剪裁材料高效发光和调控的可行性，初步探索多光子量子剪裁微晶玻璃与器件制备与应用的基础科学方法。本项目的研究探索将有助于加深对稀土发光中若干材料和物理问题的理解，并有望为掺稀土光子材料与器件的设计与研制奠定理论和方法基础，促进光子玻璃与器件科学技术的发展。

量子效率大于1的发光及材料有望在高效发光、等离子平板显示、高效太阳光电池等领域得到广泛应用。本项目以研究光子玻璃多光子近红外量子剪裁调控所涉及的新材料与新工艺基础问题为目标。着重研究和掌握掺稀土光子微晶玻璃和掺稀土连续固溶体发光材料的制备工艺、结构和物化特性、激发与发光、能量传递与转换、下转换发光与量子剪裁、量子效率的计算与实测等材料、物理和光学基本科学问题。探索光子微晶玻璃的高结晶化和均匀分布及其激发和发光特性评价方法，以期揭示光子材料所展现的一些新现象、新规律，获得高转换效率的下转换发光与量子剪裁光子材料。研究和评估多光子近红外量子剪裁材料高效发光和调控的可行性，初步探索多光子量子剪裁微晶玻璃与器件制备与应用的基础科学方法。. 本项目研究取得的主要成果有：（1）发现了光子玻璃双光子、三光子红外光子级联发射红外量子裁剪发光，提出了级联发射红外量子剪裁及其物理机制；（2）发现并提出了界面能量传递上转换（IETU）；（3）提出了玻璃形成的粘度-降温速度判别方法。