期刊
SOLAR ENERGY MATERIALS AND SOLAR CELLS
卷 221, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.solmat.2020.110885
关键词
Copper nanowires; Polymer solar cells; Sb doped SnO2; Thin films
资金
- National Natural Science Foundation of China [61701338]
- Natural Science Foundation of Tianjin City [18JCQNJC01300]
- Scientific Research Foundation for High-Level Talents (Innovative Team) of Dongguan University of Technology [KCYCXPT2017003]
A Sb-doped SnO2 covering layer was introduced to enhance the performance of CuNWs on PET substrate, resulting in a novel TCE with outstanding chemical and thermal stability, high transmittance, and conductivity.
Solution-synthesized copper nanowires (CuNWs) have been proposed to replace indium tin oxide (ITO) as transparent conductive electrodes (TCEs) due to the abundance of Cu and low production cost. However, there has to date been no way to simultaneously improve the transparency, conductivity, adhesiveness, chemical and thermal stabilities of CuNWs that critically limit their applications. In this work, we introduce a Sb doped SnO2 (ATO) covering layer to simultaneously improve the performances of CuNWs on polyethylene terephthalate (PET) substrate. The CuNWs form a random percolating network protected by ATO layer. The unique structural features of our ATO/CuNWs composite films allow for a novel TCE with outstanding conductivity (sheet resistance: 9.6 Omega/sq), high transmittance (>85% at 550 nm), strong adhesiveness, unprecedented excellent chemical and thermal stability, as well as flexibility, these performances are far superior to other CuNW based TCEs and comparable with the expensive silver NW based TCEs. Moreover, the composites show a good stability to resist long-term storage, flushing damage, and ultrasonication. Polymer solar cells (PSCs) using ATO/CuNWs based TCEs exhibit a power conversion efficiency (PCE) of 6.39%, which is higher than that of PSCs using ITO (5.87%), which illustrate a promising alternative to traditional TCEs for flexible electronic devices.
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