Improving performance of fully scalable, flexible transparent conductive films made from carbon nanotubes and ethylene-vinyl acetate
Improving performance of fully scalable, flexible transparent conductive films made from carbon nanotubes and ethylene-vinyl acetate
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DOI：
10.1016/j.egyr.2022.05.047
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发表时间：
2022
期刊：
影响因子：
5.2
通讯作者：
Bernd K. Sturdza;A. Lauritzen;Suer Zhou;Andre J. Bennett;Joshua Form;M. G. Christoforo;R. Dalgliesh;H. Snaith;M. Riede;R. Nicholas
中科院分区：
文献类型：
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作者：
Bernd K. Sturdza;A. Lauritzen;Suer Zhou;Andre J. Bennett;Joshua Form;M. G. Christoforo;R. Dalgliesh;H. Snaith;M. Riede;R. Nicholas
我们报道了单壁碳纳米管乙烯-醋酸乙烯酯透明导电膜的制备工艺改进。计数：伊娃膜表现出对折叠的高弹性，并且可以在nip钙钛矿太阳能电池的基于螺-OMeO 2的空穴选择性接触中替代外部掺杂剂，实现16.3%的稳态效率。该适应的方法是完全可扩展的，并且与先前的报告（Mazzotta等人，2018）显著降低了材料成本，并将DC与光学电导率之比提高了两个数量级，达到σ dc/σ op = 3。化学掺杂膜的σ dc/σ op = 15。我们通过小角中子散射分析了我们的薄膜的微观结构，发现CNT：伊娃薄膜的长程堆积密度与σ dc/σ op性能之间存在正相关性。增加单体比例和链长的伊娃聚合物提高了对弯曲应变的回弹性，而没有发现对所得膜的CNT包裹和导电性的显着影响。
We report process improvements for the fabrication of single-walled carbon nanotube ethylene-vinyl acetate transparent conductive films. CNT: EVA films demonstrate high resilience against folding and can replace the external dopant in a spiro-OMeTAD based hole selective contact of nip perovskite solar cells achieving a steady-state efficiency of 16.3%. The adapted process is fully scalable, and compared to previous reports (Mazzotta et al., 2018) lowers the material cost dramatically and improves DC to optical conductivity ratio by two orders of magnitude to σ d c/σ o p= 3. 6 for pristine and σ d c/σ o p= 15 for chemically doped films. We analyse the microstructure of our films via small angle neutron scattering and find a positive correlation between the long range packing density of the CNT: EVA films and the σ d c/σ o p performance. Increasing monomer ratio and chain length of the EVA polymer improves resilience against bending strain, whereas no significant effect on the CNT wrapping and electrical conductivity of resulting films is found.