Air stable polymer photovoltaics based on a process free from vacuum steps and fullerenes
Air stable polymer photovoltaics based on a process free from vacuum steps and fullerenes
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DOI：
10.1016/j.solmat.2008.01.013
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发表时间：
2008-07-01
影响因子：
6.9
通讯作者：
Krebs, Frederik C.
中科院分区：
文献类型：
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作者：
Krebs, Frederik C.
介绍了一种聚合物太阳能电池，它可以在环境条件下(25摄氏度和35+/-5%相对湿度)在黑暗中储存6个月，而不会出现明显的性能退化。活性层以低成本材料为基础，不含富勒烯。加工采用倒置器件几何结构的器件不需要真空步骤，其中器件中的有源层包括基于溶液处理的氧化锌的透明阴极、基于氧化锌纳米颗粒和聚(3-羧基二噻吩体)(P3CT)(P3CT)的体相异质结的有源层、PEDOT：PSS层以及最后的印刷银基阳极。没有使用封装，器件坚固耐用，对有源层和背电极的机械处理不敏感。在空气中的加速寿命定义为连续照明(1000W m(-2)，AM 1.5g，72+/-2摄氏度，环境空气，35+/-5%湿度)下初始性能的80%，通常为100h，并对器件进行150h的测试。在保持相同条件和降低温度的情况下，可以稳定运行数百小时。在长期稳定性方面，这一性能逊于无机光伏，但这项技术可以媲美，在容量方面与小型电池竞争。当入射光强度从1000 W m(-2)降低到100 W m(-2)时，器件效率增加了一倍以上。(C)2008爱思唯尔B.V.保留所有权利。
A polymer solar cell that can be stored under ambient conditions (25 degrees C and 35 +/- 5% relative humidity) in the dark for 6 months without noticeable degradation in performance is presented. The active layer is based on low-cost materials and is free from fullerenes. No vacuum steps are required for processing the device that employs an inverted device geometry, where the active layers in the device comprise a transparent cathode based on solution processed zinc oxide, an active layer based on a bulk heterojunction of zinc oxide nanoparticles and poly-(3-carboxydithiophene) (P3CT), a PEDOT:PSS layer and finally a printed silver based anode. No encapsulation was employed and the devices were robust and not sensitive to mechanical handling of the active layer and back electrode. The accelerated lifetime in air defined as 80% of the initial performance at continuous illumination (1000 W m(-2), AM 1.5G, 72 +/- 2 degrees C, ambient atmosphere, 35 +/- 5% humidity) was typically 100h and the devices were tested for 150h. When keeping the same conditions and lowering the temperature, stable operation for hundreds of hours was possible. In terms of long-term stability, this performance is inferior to inorganic photovoltaics but the technology compares well and competes with small batteries in terms of capacity. The device efficiency more than doubled upon decreasing the incident light intensity from 1000 to 100 W m(-2). (c) 2008 Elsevier B.V. All rights reserved.