%0 Journal Article
%T Low-cost light manipulation coatings for polymer solar cell photocurrent increase under various incident angles
%A Hideyuki Murata
%A Savanna Lloyd
%A Takahiro Takumi
%A Varun Vohra
%J Materials Research Letters
%D 2019
%R https://doi.org/10.1080/21663831.2018.1556183
%X 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)
%U https://www.tandfonline.com/doi/full/10.1080/21663831.2018.1556183