Low-temperature processed highly efficient hole transport layer free carbon-based planar perovskite solar cells with SnO2 quantum dot electron transport layer
Low-temperature processed highly efficient hole transport layer free carbon-based planar perovskite solar cells with SnO2 quantum dot electron transport layer
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DOI：
10.1016/j.mtphys.2020.100204
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发表时间：
2020-06
影响因子：
11.5
通讯作者：
S. Vijayaraghavan;Jacob Wall;Lin Li;G. Xing;Q. Zhang;Feng Yan
中科院分区：
文献类型：
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作者：
S. Vijayaraghavan;Jacob Wall;Lin Li;G. Xing;Q. Zhang;Feng Yan
使用昂贵的空穴传输层（HTLs）和背接触以及钙钛矿太阳能电池（PSCs）的稳定性问题一直是该技术商业化的不利因素。此外，高温和长退火时间处理的电子传输层（etl，如TiO2）阻碍了柔性太阳能电池在大多数聚合物衬底中的应用。在这里，我们选择了不含html的碳电极，因为与贵金属电极相比，它们的生产成本低，在空气中的稳定性好。在这项工作中，我们使用低温溶液处理的sno2量子点（QDs）作为etl来制造平面PSCs，由于其出色的电子提取和空穴阻塞能力，它比高温处理的etl具有显著的优势。此外，通过集成低成本和稳定的碳电极，在环境条件下，在1个太阳光照下，通过器件结构玻璃/In掺杂SnO2/QD-SnO2/钙钛矿/碳，实现了令人难忘的13.64%的能量转换效率。这项工作通过集成QD SnO2ETL和碳电极，为以可承受的成本实现完全低温加工的可打印psc铺平了道路。
The use of expensive hole transport layers (HTLs) and back contact along with the stability issue of perovskite solar cells (PSCs) has been a detrimental factor when it comes to commercialization of the technology. In addition, high temperature and long annealing time processed electron transport layers (ETLs, e.g. TiO2) prevent the flexible solar cell application in most polymer substrates. Herein, we opted for HTL-free carbon electrodes owing to their low-cost production and superior stability in air, compared with their noble metal counterparts. In this work, we fabricate planar PSCs using low-temperature solution processed SnO2quantum dots (QDs) as ETLs, which offers significant advantages over high-temperature processed ETLs because of its excellent electron extraction and hole blocking ability. In addition, by integrating a low-cost and stable carbon electrode, an impressive energy conversion efficiency of 13.64% with a device architecture glass/In doped SnO2/QD-SnO2/perovskite/carbon under 1 sun illumination at ambient conditions have been achieved. This work paves the way to achieve fully low-temperature processed printable PSCs at an affordable cost by integrating the QD SnO2ETL and carbon electrodes.