Electronic Doping in Semiconductor Nanocrystals

半导体纳米晶体中的电子掺杂

• 批准号: 133222585
• 负责人: Professor Dr. Markus Winterer
• 金额: --
• 依托单位: Lehrstuhl für Nanopartikel-Prozesstechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2009
• 资助国家: 德国
• 起止时间: 2008-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/133222585?language=en
• 关键词: Electronic; Doping; Semiconductor; Nanocrystals

The introduction of intentional impurities (or dopants) can address several important challenges expected for the applications of semiconductor nanocrystals. In particular, it should allow highly conducting films of nanocrystals to be obtained. Recently, the PI and collaborators have presented a new model that resolved previous problems in obtaining doped semiconductor nanocrystals. Here, we will build upon this success to synthesize and study a variety of doped nanocrystals and their assemblies. Our emphasis will be on impurities that can contribute an extra electron or an extra hole to the particles. We propose to: (i) use our theoretical model to guide our selection of dopants, (ii) develop appropriate chemical precursors to synthesize the desired doped nanocrystals, (iii) characterize the location of the dopants in synthesized nanocrystals, and (iv) move toward a unified picture of the influence of impurities on the behavior of nanocrystals and their assemblies. We will address these goals through a unique collaboration between the University of Minnesota and the University of Duisburg-Essen that will enable us to study doped nanocrystals made from both solution and gas-phase methods.

有意引入杂质（或掺杂剂）可以解决半导体纳米晶体应用所面临的几个重要挑战。特别地，其应允许获得纳米晶体的高导电膜。最近，PI和合作者提出了一种新的模型，解决了以前在获得掺杂半导体纳米晶体方面的问题。在这里，我们将建立在这一成功的合成和研究各种掺杂的纳米晶体及其组件。我们的重点将放在杂质，可以贡献一个额外的电子或一个额外的空穴的粒子。我们建议：（i）使用我们的理论模型来指导我们对掺杂剂的选择，（ii）开发合适的化学前体来合成所需的掺杂纳米晶体，（iii）表征掺杂剂在合成的纳米晶体中的位置，以及（iv）朝着杂质对纳米晶体及其组装体的行为的影响的统一图像移动。我们将通过明尼苏达大学和杜伊斯堡-埃森大学之间的独特合作来实现这些目标，这将使我们能够研究由溶液和气相方法制成的掺杂纳米晶体。

项目成果

Interaction of L-Cysteine with ZnO: Structure, Surface Chemistry, and Optical Properties.

• DOI: 10.1021/la504968m
• 发表时间: 2015-05
• 期刊: Langmuir : the ACS journal of surfaces and colloids
• 作者: A. Sandmann;Alexander Kompch;V. Mackert;C. Liebscher;M. Winterer

Localization of Ag Dopant Atoms in CdSe Nanocrystals by Reverse Monte Carlo Analysis of EXAFS Spectra

• DOI: 10.1021/acs.jpcc.5b04399
• 发表时间: 2015-08-13
• 期刊: JOURNAL OF PHYSICAL CHEMISTRY C
• 影响因子: 3.7
• 作者: Kompch, Alexander;Sahu, Ayaskanta;Winterer, Markus
• 通讯作者: Winterer, Markus