Spectral down-conversion of carbon quantum dot-PVA films for photosynthesis and growth augmentation of Brassica juncea in indoor hydroponic systems.
- Open access
Carbon quantum dot-PVA films with optimized Stokes shift enhance photosynthesis, boosting Brassica juncea growth by up to 78% in indoor hydroponic systems.
- Why it matters: Spectral mismatch limits the efficiency of light utilization in controlled-environment agriculture, restricting plant growth and productivity. Improving spectral conversion materials can address this gap and enable better crop yields indoors.
- What they did: Researchers incorporated two types of carbon quantum dots (CQD-4 and CQD-9) into PVA films, systematically studying their structure, photophysics, and spectral conversion performance, then tested these films wrapped around LED lights in hydroponic setups over five weeks.
- The result: CQD-4/PVA films significantly increased light delivery and plant growth parameters, such as biomass and leaf area, compared to controls and CQD-9 treatments, demonstrating that CQD structure influences spectral conversion efficiency and plant productivity.