Recent progress in colloidal quantum dot photovoltaics
Recent progress in colloidal quantum dot photovoltaics
复制标题
胶体量子点光伏发电的最新进展
DOI：
10.1007/s12200-015-0524-9
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发表时间：
2015
影响因子：
5.4
通讯作者：
Xihua Wang
中科院分区：
文献类型：
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作者：
Xihua Wang
光伏器件——太阳能电池的发展在可再生能源中起着关键作用。半导体胶体量子点（CQDs），包括铅硫化物CQDs，具有可调谐的电子带隙从红外到可见光，作为一个很好的候选者来获取广谱的阳光。cqd可以从溶液中加工，允许它们以卷对卷印刷工艺沉积，与低成本制造大面积太阳能电池板兼容。与体体半导体相比，CQD中增强的多激子生成过程使CQD光伏电池具有超越Shockley-Queisser极限的潜力。由于这些优点，CQD光伏引起了学术界的高度重视，大量的研究工作加速了CQD太阳能电池的发展。CQD太阳能电池的效率从2011年的5.1%增加到2015年的9.9%。这种改进依赖于优化的材料处理、器件结构和各种努力来提高载流子收集效率。本文综述了2012年及以后CQD光伏技术的研究进展。在这里，我们重点介绍了提高对CQD太阳能电池器件物理理解的理论和实验工作，这可能会指导研究界对CQD光伏的发展。
The development of photovoltaic devices, solar cells, plays a key role in renewable energy sources. Semiconductor colloidal quantum dots (CQDs), including lead chacolgenide CQDs that have tunable electronic bandgaps from infrared to visible, serve as good candidates to harvest the broad spectrum of sunlight. CQDs can be processed from solution, allowing them to be deposited in a roll-to-roll printing process compatible with low-cost fabrication of large area solar panels. Enhanced multiexciton generation process in CQD, compared with bulk semiconductors, enables the potential of exceeding Shockley-Queisser limit in CQD photovoltaics. For these advantages, CQDs photovoltaics attract great attention in academics, and extensive research works accelerate the development of CQD based solar cells. The record efficiency of CQD solar cells increased from 5.1% in 2011 to 9.9% in 2015. The improvement relies on optimized material processing, device architecture and various efforts to improve carrier collection efficiency. In this review, we have summarized the progress of CQD photovoltaics in year 2012 and after. Here we focused on the theoretical and experimental works that improve the understanding of the device physics in CQD solar cells, which may guide the development of CQD photovoltaics within the research community.