The Polymer Society of Korea

이영경 (포항공과대학교)

정대성 (포항공과대학교)

This study presents a high-performance organic photodiode (OPD) that achieves precise wavelength selectivity using a panchromatic active layer integrated with a Fabry–Perot (FP) interferometer structure. While conventional multi-channel visible light communication (VLC) requires complex synthesis of narrow-band absorbing materials, our approach utilizes an FP-based electrode as an internal optical filter.

By leveraging constructive interference, the device selectively enhances resonant wavelengths, providing narrow detection bands and high spectral purity without specialized absorbers. This structural strategy allows for tunable color responses and scalable fabrication of flexible OPD arrays by simply modulating the optical path length. The results demonstrate a practical and robust solution for next-generation optoelectronic systems, offering a clear path toward high-efficiency, multi-channel optical communication architectures.