Low-cost light manipulation coatings for polymer solar cell photocurrent increase under various incident angles
Low-cost light manipulation coatings for polymer solar cell photocurrent increase under various incident angles
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DOI：
10.1080/21663831.2018.1556183
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发表时间：
2019-02
影响因子：
8.3
通讯作者：
Takahiro Takumi;Savanna Lloyd;H. Murata;Varun Vohra
中科院分区：
文献类型：
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作者：
Takahiro Takumi;Savanna Lloyd;H. Murata;Varun Vohra
摘要利用自组装模板制备了具有准随机尺寸分布的聚二甲基硅氧烷（PDMS）织构，并将其用作聚合物太阳能电池（PSC）的光操控涂层。当沉积在PSC玻璃/空气界面时，具有微圆顶状结构的PDMS膜通过组合的抗反射和散射效应将短路电流密度（Jsc）提高了7.9%。因此，PSC功率转换效率可以从6.75%提高到7.28%，并且对于倾斜30度的入射光观察到最大Jsc增加21%。我们比较了具有不同直径分散度的结构，并确认纹理涂层中的准随机性可以增加其光散射能力。与昂贵的光刻技术不同，这种自组装方法开辟了一条低成本制造准随机微纹理涂层的道路，用于PSC，以全天有效地收集阳光（以各种入射角）。
ABSTRACT We fabricate self-assembled templates to produce textured polydimethylsiloxane (PDMS) with quasi-random dimension distributions which are employed as light manipulation coatings in polymer solar cells (PSCs). When deposited at the PSC glass/air interface, PDMS films with microdome-like structures enhance the short-circuit current density (Jsc) by 7.9% through combined anti-reflective and scattering effects. The PSC power conversion efficiency can thus be improved from 6.75% to 7.28% and a maximum Jsc increase of 21% is observed for incident light tilted by 30 degrees. We compare structures with different diameter dispersities and confirm that quasi-randomness in textured coatings can increase their light scattering ability. GRAPHICAL ABSTRACT IMPACT STATEMENT Unlike costly lithographic techniques, this self-assembled approach opens the path to low-cost fabrication of quasi-random microtextured coatings for PSCs to efficiently harvest sunlight throughout the day (at various incident angles).