Sucheol Ju1,Dongwoo Chae1,Soomin Son1,Hangyu Lim1,Jisung Ha1,Heon Lee1
Korea University1
Sucheol Ju1,Dongwoo Chae1,Soomin Son1,Hangyu Lim1,Jisung Ha1,Heon Lee1
Korea University1
In semi-transparent perovskite solar cells (PSCs), the short-circuit current density (J<sub>SC</sub>) greatly decreases with an increase in transmittance, and this results in a significant decrease in PCE. Our semi-transparent PSCs were fabricated by controlling the absorption layer thickness and aperture ratio using a 3D-structured FTO manufactured via direct printing and mist-CVD. This strategy has an advantage in that the aperture ratio (transmission/entire area) can be controlled easily by adjusting pattern specification. Also, the 3D-structured FTO enhanced the diffuse transmittance and shortened the carrier travel distance; further, it minimized the decrease in PCE because of an increase in transmittance. Our fully semi-transparent PSCs (F-PSCs) achieved a PCE of 12.0% to 14.6%, and an average visible transmittance (AVT) of 13.4% to 17.0%. These results demonstrate that the parameter of semi-transparent PSCs (transmittance and PCE) can be easily tailored to the application by controlling the specification of the pattern.