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量子点基能源与环境功能材料课题组

来源:    发布时间:2016-10-27    点击次数:

团队负责人:李良
主要研究方向: 

1)荧光量子点的制备及其应用(LED照明、显示、太阳能电池);

2)快速大容量重金属吸附材料;

3)基于废物资源化利用的上转换光催化材料制备及应用。

量子点(半导体纳米晶体)具有优异的光电性能,应用前景广阔。量子点基能源与环境功能材料团队致力于研究量子点的制备及其在荧光粉、快速大容量重金属吸附剂、太阳能电池和上转换光催化材料中的应用。

        量子点“稳定性”是量子点应用的最大瓶颈之一,团队依托自钝化原理,制备了超稳定的荧光量子点,使量子点在LED照明、显示和太阳能电池中的应用价值得到了极大的提高。根据量子点合成中的离子交换技术,制备了高效纳米重金属吸附剂,实现了水体中重金属污染物的快速净化。基于废弃物资源化利用技术,将量子点与上转换半导体结合,获得了高效的上转换光催化材料。

       团队承接国家自然科学基金重点项目、教育部“新世纪优秀人才计划”项目和中国航天科技集团横向项目,并参与国家自然科学基金重点项目。已在国际期刊上发表论文30余篇,工作已被国际期刊正面引用超过2300次,入选ESI高引论文4篇,H指数=19,单篇最高引用568次,超百次引用论文8篇。ACS和MRS年会邀请报告两次。

Quantum Dots based Energy and Environmental Materials Team

Main research areas:

l The preparation of quantum dots and their applications (LED lighting, display, and solar cells).

l Ultraeffective nanocrystal sorbents for heavy metal removal.

l The preparation of the waste recycling based upconversion photocatalysts and their applications.

Quantum dots (QDs) have been attracted a lot of attention in variety applications due to their unique optical and electronic properties. Our QDs based energy and environmental materials team has worked on the preparation of QDs and their applications in phosphor powders, heavy metal-ultraeffective nanocrystal sorbents, solar cells, and upconversion photocatalysts. Our research projects include the National Natural Science Foundation of China, Program for New Century Excellent Talents, the crosswise project from China Aerospace Science and Technology Group, and the State Key Program of National Natural Science Foundation of China. The long term stability of QDs is one of the biggest bottleneck problems for their applications. We develop a simple method to enhance the stability of QDs from oxidation by doping aluminum (Al), which has self-passivation behavior into the shell of the core/shell QDs. The Al2O3 films can be formed in the self-passivation process, and the ultra-stable Al doped QDs are obtained. Thus, the utilization of the principle of self-passivation has greatly promoted the practical applications of QDs in LED lighting, display, and solar cells. The effective heavy metal sorbents are synthesized due to the high surface activity and the strong cation exchange of QDs. The volatile 1-butylamine is used as the solvent and ligand, and the short ligand capped CuInS2 nanocrystal solar cells are fabricated directly, which possesses the photoelectric conversion efficiency of 4%. Based on the waste recycling technology, the efficient upconversion photocatalysts are obtained through the incorporation of QDs into upconversion semiconductors.

Some Current projects:

National Natural Science Foundation of China, Program for New Century Excellent Talents, the crosswise project from China Aerospace Science and Technology Group, and the State Key Program of National Natural Science Foundation of China.

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自钝化量子点

Colloidal quantum dots developed in the NEEFM’s lab that present high photo-stability. Such materials could be used as red phosphor in LED application.

Solution processable solar cells based on in-situ synthesis of nanocrystals. Supported by National Natural Science Foundation of China (NSFC 21271179, 51278294);

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量子点太阳能电池

Solution processable solar cells by in-situ synthesis of CuInS2 nanocrystals on ITO.

快速大容量重金属吸附材料(上海新闻综合频道等多家媒体的广泛报道):

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上转换光催化材料:

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