Hu Zhenghao, Wang Zhi, An Qiaoshi, Zhang Fujun
Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China.
School Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China.
Sci Bull (Beijing). 2020 Jan 30;65(2):131-137. doi: 10.1016/j.scib.2019.09.016. Epub 2019 Sep 16.
A series of opaque and semitransparent polymer solar cells (PSCs) were fabricated with PM6:Y6 as active layers, and 100 nm Al or 1 nm Au/(20, 15, 10 nm) Ag layer as electrode, respectively. The power conversion efficiency (PCE) of opaque PSCs arrives to 15.83% based on the optimized active layer with a thickness of 100 nm, resulting from the well-balanced photon harvesting and charge collection. Meanwhile, the 100 nm PM6:Y6 blend film exhibits a 50.5% average visible transmittance (AVT), which has great potential in preparing efficient semitransparent PSCs. The semitransparent electrodes were fabricated with 1 nm Au and different thick Ag layers, exhibiting a relatively high transmittance in visible light range and relatively low transmittance in near infrared range. The PCE and AVT of the semitransparent PSCs can be adjusted from 14.20% to 12.37% and from 8.9% to 18.6% along with Ag layer thickness decreasing from 20 to 10 nm, respectively, which are impressive values among the reported semitransparent PSCs.
制备了一系列以PM6:Y6为活性层、分别以100 nm铝或1 nm金/(20、15、10 nm)银层为电极的不透明和半透明聚合物太阳能电池(PSC)。基于优化后的100 nm厚活性层，不透明PSC的功率转换效率(PCE)达到15.83%，这得益于光子捕获和电荷收集的良好平衡。同时，100 nm的PM6:Y6混合膜平均可见光透过率(AVT)为50.5%，在制备高效半透明PSC方面具有巨大潜力。半透明电极由1 nm金和不同厚度的银层制成，在可见光范围内具有较高的透过率，在近红外范围内具有较低的透过率。随着银层厚度从20 nm减小到10 nm，半透明PSC的PCE和AVT分别从14.20%调整到12.37%，从8.9%调整到18.6%，这些值在已报道的半透明PSC中令人印象深刻。
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