Aperiodic band-pass electrode enables record-performance transparent organic photovoltaics

Transparent organic photovoltaics (TOPVs) potentially meet the de-mands of building integration windows, although a critical challenge for efficient TOPVs is the trade-off between average visible light transmittance (AVT) and power conversion efficiency (PCE). Herein, we successfully design and construct a superior transparent rear electrode for efficient TOPVs via integrating an aperiodic band-pass filter (ABPF). The integrated rear electrode exhibits an AVT of up to 78.69%, a color-rendering index (CRI) of 97.54, and a total reflection in the near-infrared region (700-900 nm). Relative to the counterparts without ABPF, the TOPVs with ABPF demonstrate remarkable -60% enhancement in AVT and light utilization effi-ciency (LUE). As a result, ABPF-integrated TOPVs demonstrate a re-cord-breaking LUE of 5.35%, accompanied with an AVT of 46.79% and CRI of 85.39. This superior transparent electrode realization- highly transparent in visible and total reflection in NIR represents a significant step forward toward unique and versatile TOPVs applications.

Automated summary

TOPVs present the potential for building integration windows, with a critical challenge being the trade-off between AVT and PCE. By integrating an ABPF, a superior transparent rear electrode was designed and constructed, showing significant enhancements in AVT and LUE compared to counterparts without ABPF.