Multiple Exciton Generation Solar Cells: Effects of Nanocrystal Shape on Quantum Efficiency

被引：0
|
作者：
Marshall, Ashley R. [1 ,2 ]
Beard, Matthew C. [2 ]
Luther, Joseph M. [2 ]
机构：
[1] Univ Colorado, Boulder, CO 80302 USA
[2] Natl Renewable Energy Lab, Golden, CO 80401 USA
来源：
2014 IEEE 40TH PHOTOVOLTAIC SPECIALIST CONFERENCE (PVSC) | 2014年
关键词：
Lead chalcogenides; multiple exciton generation; nanocrystals; photovoltaic cells; MULTIEXCITON GENERATION; DOTS;
D O I：
暂无
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
Semiconductor nanocrystals (NCs) have the ability to perform a process, termed multiple exciton generation (or MEG), which produces two electrons for every absorbed photon. This has been experimentally confirmed using ultrafast spectroscopic techniques for many semiconductor NC families. The shape of the NCs has been found to play an important role in the efficiency of MEG. Spherical PbSe NCs have been used to fabricate devices that exhibit greater than 100% quantum efficiencies, here we report on the use of NC morphologies and hybrid NC assemblies that can increase the power conversion efficiency in a device.
引用
收藏
页码：1077 / 1079
页数：3
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