Narrow Bandgap Colloidal Metal Chalcogenide Quantum Dots: Synthetic Methods, Heterostructures, Assemblies, Electronic and Infrared Optical Properties
Narrow Bandgap Colloidal Metal Chalcogenide Quantum Dots: Synthetic Methods, Heterostructures, Assemblies, Electronic and Infrared Optical Properties
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DOI：
10.1002/chin.201324188
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发表时间：
2013-06
期刊：
影响因子：
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通讯作者：
S. Kershaw;A. Susha;A. Rogach
中科院分区：
文献类型：
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作者：
S. Kershaw;A. Susha;A. Rogach
胶体半导体纳米晶体（量子点）的化学、材料加工和基本理解正在以惊人的速度发展，使这些新颖而令人兴奋的材料的广泛商业化前景更加接近。近年来，对窄带隙纳米晶体的兴趣特别增强，并且全世界的研究结果指出了这些材料在太阳能电池、红外光电子学（例如激光器、光调制器、光电检测器和光成像器件）、低成本/大尺寸微电子学以及生物成像和生物传感器系统中的应用的现实前景，仅举一些技术。基本理解和材料质量的改进是建立在广泛的经验基础上的，这些经验分布在许多不同的胶体合成生长方法上，每种方法对于不同的材料都有自己的优点和缺点，有时在特定的应用中。快速增长的专业知识与快速扩展的高度跨学科的知识相匹配，了解如何最好地将这些材料组装成薄膜或混合复合材料，从而成为有用的设备，并且可以采用许多不同的策略。在这篇综述中，我们试图调查和比较最近的工作，胶体合成，薄膜和纳米复合材料的制造，集中在窄带隙硫族化合物材料和它们的一些局部应用在太阳能和生物领域。由于这些应用程序正在吸引越来越多的兴趣在广泛的学科，从生物科学，设备工程，材料加工领域以及物理和合成化学社区，我们一直努力使这些窄带隙纳米材料的审查都是全面的，并访问该地区的新人。
The chemistry, material processing and fundamental understanding of colloidal semiconductor nanocrystals (quantum dots) are advancing at an astounding rate, bringing the prospects of widespread commercialization of these novel and exciting materials ever closer. Interest in narrow bandgap nanocrystals in particular has intensified in recent years, and the results of research worldwide point to the realistic prospects of applications for these materials in solar cells, infrared optoelectronics (e.g. lasers, optical modulators, photodetectors and photoimaging devices), low cost/large format microelectronics, and in biological imaging and biosensor systems to name only some technologies. Improvements in fundamental understanding and material quality are built on a vast body of experience spread over many different methods of colloidal synthetic growth, each with their own strengths and weaknesses for different materials and sometimes with regard to particular applications. The nanocrystal growth expertise is matched by a rapidly expanding, and highly interdisciplinary, understanding of how best to assemble these materials into films or hybrid composites and thereby into useful devices, and again there are many different strategies that can be adopted. In this review we have attempted to survey and compare the recent work on colloidal synthesis, film and nanocrystal composite material fabrication, concentrating on narrow bandgap chalcogenide materials and some of their topical applications in the solar energy and biological fields. Since these applications are attracting rising interest across a wide range of disciplines, from the biological sciences, device engineering, and materials processing fields as well as the physics and synthetic chemistry communities, we have endeavoured to make the review of these narrow bandgap nanomaterials both comprehensive and accessible to newcomers to the area.