Figure 14.

(a) Schematic representation of the antireflection coating on the glass substrate of organic photovoltaics to improve transmittance and device performance. (b) Current density–voltage characteristics and (c) external quantum efficiency spectra of PBDB−T‐2F:BTP‐4F devices with and without the antireflection coating. Reproduced with permission from ref. [119]; copyright 2019, Royal Society of Chemistry. (d,e) Structure of an organic photovoltaic deposited on glass. The microtextured light management film is applied on top of the glass substrate (here shown for the case of parabolic texture) and three types of microscale surface textures: pyramidal, parabolic, and sinusoidal. (f) Absorbance and inverted reflectance (1−R) spectra of organic photovoltaics with three optimal surface textures. Reproduced with permission from ref. [120]; copyright 2014, IEEE.