CD Bioparticles provides ZnSe/ZnS core-shell semiconductor quantum dots with emission range from 400 nm to 440 nm. ZnSe based quantum dots are considered as environmentally friendly broadband gap nanomaterial, which are investigated for their suitability in cadmium-free blue-green light emitting applications. Our ZnSe/ZnS Quantum dots with uniform size distribution, high quantum yield and low toxicity can be used in highly sensitive cellular imaging, solar cells and light emitting devices.