“Luminescent solar concentrator model” by Levita.lev, image/information source: Wikimedia Commons
Luminescent Solar Concentrators (LSCs) are innovative devices that capture sunlight over a large area and concentrate it for photovoltaic conversion. They integrate well into buildings, aligning with sustainable architecture goals.pubs.acs+1
How LSCs Work
LSCs use a transparent waveguide, like glass or polymer, doped with luminescent materials such as quantum dots or organic dyes. These absorb broad-spectrum sunlight, re-emit it at longer wavelengths via fluorescence, and guide the light via total internal reflection to small solar cells at the edges.wikipedia+1
Key Advantages
- Enable semitransparent, colorful building-integrated photovoltaics (BIPV) that work under diffuse light.4tu+1
- Offer design flexibility for urban facades, greenhouses, or windows without needing sun-tracking.[4tu]
- Recent advances include recyclable lead-free perovskites achieving up to 5.56% power conversion efficiency (PCE).[nature]
Challenges and Progress
Self-absorption of emitted light, low quantum yield, and durability limit PCE to around 2-5% in prototypes, far below traditional panels.pubmed.ncbi.nlm.nih+1
Liquid LSCs and nanomaterials like carbon dots or silicon quantum dots are emerging to boost efficiency, scalability, and recyclability.sciencedirect+1
Tandem and stacked designs expand sunlight utilization, targeting industrial viability.[pubs.acs]
