Here's your markdown file — a concise, up-to-date primer on quantum dots:
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Quantum Dot Primer File
It covers:
- Core physics: size-dependent quantum confinement — QDs produce pure monochromatic light, with emission tunable from red (∼5 nm) to violet (∼1.5 nm), and bandgap inversely proportional to size squared.
- Families in 2025-2026: cadmium-free InP (RoHS-driven), carbon-based QDs for low toxicity, perovskite QDs with 50–90% PLQY, N-doped MXene QDs for smartphone sensors, and Ag₂S QDs for imaging.
- Displays: as of June 2025 all commercial QLEDs use photo-emissive QDs; QD-OLEDs now hit ∼90% Rec.2020; micro-LED QD-COB products launched 2023-2024.
- New frontiers: 40-million-per-second telecom photon sources, QD-PUFs for security, CQDs in forensics, and heavy-metal sensors down to 0.1 nM.
Open it in any markdown viewer — it's structured for notes, slides, or further editing. Want me to also generate a one-page PDF or a visual summary diagram?
