All-solution-processed PbS quantum dot solar modules.
All-solution-processed PbS quantum dot solar modules.
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DOI：
10.1039/c5nr01508a
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发表时间：
2015-05
期刊：
影响因子：
6.7
通讯作者：
J. Jang;H. Shim;Yeonkyeong Ju;Jung-Hoon Song;H. An;Jong-Su Yu;Sun-Woo Kwak;Taik-Min Lee;Inyoung Kim;Sohee Jeong
中科院分区：
文献类型：
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作者：
J. Jang;H. Shim;Yeonkyeong Ju;Jung-Hoon Song;H. An;Jong-Su Yu;Sun-Woo Kwak;Taik-Min Lee;Inyoung Kim;Sohee Jeong
最近，通过采用异质结架构，硫化铅 (PbS) QD 实现了胶体量子点 (QD) 太阳能电池功率转换效率的快速提高，该架构由与带有金属电极的真空沉积缓冲层相关的小面积器件组成。需要通过低成本溶液工艺制备QD太阳能组件以进一步提高功率成本比。在此，我们展示了全溶液处理的柔性 PbS QD 太阳能组件，其具有逐层结构，包括聚对苯二甲酸乙二醇酯 (PET) 基板/氧化铟锡 (ITO)/氧化钛 (TiO2)/PbS QD/聚(3-己基噻吩) (P3HT)/聚(3,4-乙撑二氧噻吩): 聚(苯乙烯磺酸) (PEDOT: PSS)/Ag，有效面积高达 30 cm(2)，在 AM 1.5 条件下表现出 1.3% 的功率转换效率 (PCE)（1 cm(2) 单元电池的 PCE 为 2.2%）。我们的方法在功率和光伏设备的有效面积之间进行权衡，从而产生低成本的电源，并且可以扩展到更大的面积。
A rapid increase in power conversion efficiencies in colloidal quantum dot (QD) solar cells has been achieved recently with lead sulphide (PbS) QDs by adapting a heterojunction architecture, which consists of small-area devices associated with a vacuum-deposited buffer layer with metal electrodes. The preparation of QD solar modules by low-cost solution processes is required to further increase the power-to-cost ratio. Herein we demonstrate all-solution-processed flexible PbS QD solar modules with a layer-by-layer architecture comprising polyethylene terephthalate (PET) substrate/indium tin oxide (ITO)/titanium oxide (TiO2)/PbS QD/poly(3-hexylthiophene) (P3HT)/poly(3,4-ethylenedioxythiophene) : poly(styrene sulfonate) (PEDOT : PSS)/Ag, with an active area of up to 30 cm(2), exhibiting a power conversion efficiency (PCE) of 1.3% under AM 1.5 conditions (PCE of 2.2% for a 1 cm(2) unit cell). Our approach affords trade-offs between power and the active area of the photovoltaic devices, which results in a low-cost power source, and which is scalable to larger areas.