RPI ID:
2015-004
Innovation Summary: A phosphorescent donor–acceptor solar cell architecture is presented that enhances light‑harvesting efficiency by converting high‑energy photons into wavelengths more effectively absorbed by the acceptor layer. The structure integrates phosphorescent donor particles that capture UV/blue photons and re‑emit them at longer wavelengths, while acceptor particles generate photocurrent from both direct sunlight and re‑emitted donor light. This layered interaction expands the spectral response and improves overall power‑conversion efficiency. The thin, compact design is compatible with modern thin‑film fabrication methods, allowing integration across diverse photovoltaic configurations.
Challenges / Opportunities: Conventional photovoltaic devices do not efficiently utilize high‑energy photons, causing significant spectral losses in the UV/blue region. This innovation addresses that gap through an internal spectral‑conversion mechanism that channels previously wasted photon energy into productive absorption. The design supports incorporation into commercial solar modules without major redesign of existing thin‑film platforms. Market demand for high‑efficiency, lightweight renewable energy solutions—especially where panel area is limited—creates strong opportunities for adoption.
Key Benefits / Advantages: ✔ Broadened spectral absorption through phosphorescent wavelength shifting ✔ Enhanced photon‑to‑current conversion efficiency ✔ Compatible with low‑cost thin‑film solar‑cell manufacturing ✔ Increases output in space‑constrained or low‑light applications
Applications: • Residential and commercial solar panels • Portable and wearable photovoltaic devices • Building‑integrated photovoltaic systems
Keywords: solar cells, phosphorescent materials, spectral conversion, thin‑film photovoltaics, donor–acceptor systems
Intellectual Property: • US Patent 11,682,743 – Focuses on phosphorescent donor–acceptor solar‑cell structures engineered to enhance spectral conversion efficiency. • US Patent 12,389,712 – Centers on material compositions and device architectures that improve energy transfer and absorption in hybrid phosphorescent photovoltaic systems. • Published U.S. Patent Application US20250338671A1 – Covers expanded embodiments of wavelength‑shifting photovoltaic designs, including donor/acceptor material variations and fabrication approaches that increase photon‑management performance.