Neutral-colored Semitransparent Perovskite Solar Cells by Controlling Aperture Ratios

In this study, we implement a laser patterning process on organic-inorganic hybrid perovskite (OIHP) film and perform systematical investigation on the effects of aperture ratios. Through careful aperture ratio control and by using indium tin oxide (ITO) transparent electrode, we can fabricate neutral-colored semitransparent OIHP solar cells. Furthermore, we show that a LiF interlayer between OIHP and C-60 electron transport layer (ETL) plays a bifunctional role of interface passivation and current flow rectification. Consequently, we demonstrate a high efficiency of 12.83 % power conversion efficiency (PCE) from a 2.00 cm(2) and 9.30 % PCE from 36.00 cm(2) area, with 21.74 % average visible transmittance (AVT). In addition, the neutral-colored semitransparent solar cell retains 89.02 % of its initial efficiency after 1,000 hours in dry-air storage without encapsulation.

Automated summary

In this study, the effects of aperture ratios on organic-inorganic hybrid perovskite (OIHP) film were investigated. By precisely controlling aperture ratios and using indium tin oxide (ITO) transparent electrode, neutral-colored semitransparent OIHP solar cells were successfully fabricated. The introduction of a LiF interlayer between OIHP and C-60 electron transport layer (ETL) not only served as an interface passivation layer but also improved current flow rectification. The solar cells achieved high power conversion efficiency (PCE) and average visible transmittance (AVT), and showed good stability after 1000 hours of storage.