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首页> 外文会议>Conference on quantum dots, particles, and nanoclusters VI; 20090125-28; San Jose, CA(US) >Single-Mode Light Source Fabrication Based on Colloidal Quantum Dots
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Single-Mode Light Source Fabrication Based on Colloidal Quantum Dots

机译：基于胶体量子点的单模光源制造

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摘要

There are huge market demands for innovative, cheap and efficient light sources, including light emitting devices, such as LEDs and lasers. However, the light source development in the visible spectral range encounters significant difficulties these years. The available visible wavelength LEDs or lasers are few, large and expensive. The main challenge lies at the lack of efficient light media. Semiconductor nanocrystal quantum dots (QDs) have recently commanded considerable attention. As a result of quantum confinement effect, the emission color of these QDs covers the whole visible spectral range and can be modified dramatically by simply changing their size. Such spectral tunability, together with large photoluminescence quantum yield and photostability, make QDs attractive for potential applications in a variety of light emitting technologies. However, there are still several technical problems that hinder their application as light sources. One main issue is how to fabricate these QDs into a solid state device while still retaining their original optical emission properties. A vacuum assisted micro-fluidic fabrication of guided wave devices has demonstrated low waveguide propagation loss, lower crosstalk, and improved waveguide structures. We report herein the combination of the excellent emission properties of QDs and novel vacuum assisted micro-fluidic photonic structure fabrication technique to realize single-mode efficient light sources.
机译：市场对创新，廉价和高效的光源有巨大的需求，其中包括发光器件，如LED和激光。然而，这些年来，在可见光谱范围内的光源开发遇到了很大的困难。可用的可见波长LED或激光器很少，很大且很昂贵。主要挑战在于缺乏高效的轻质媒体。半导体纳米晶体量子点（QD）最近引起了相当大的关注。由于量子限制效应，这些量子点的发射颜色覆盖了整个可见光谱范围，可以通过简单地改变其大小来进行大幅修改。这种光谱可调性以及大的光致发光量子产率和光稳定性，使得QD吸引了各种发光技术的潜在应用。但是，仍然存在一些技术问题阻碍了它们作为光源的应用。一个主要问题是如何将这些量子点制造成固态器件，同时又保持其原始的光发射特性。导波装置的真空辅助微流体制造已证明具有较低的波导传播损耗，较低的串扰和改进的波导结构。我们在此报告QDs的优异发射特性与新型真空辅助微流体光子结构制造技术的结合，以实现单模高效光源。

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