The Pros and Cons of Quantum Dots

The extended use of QDs entails the handling of their positive and negative aspects as well. QDs size can be easily manipulated in order to control the wavelength of the photons emitted or the color of the emitted light. They need small amounts of energy to be excited and a single wavelength source (e.g. ultraviolet) for all sizes. Other advantages include the low cost of production and the multiple production methods. QDs disadvantage is that they may be toxic or dangerous for cells due to their large physical sizes and extended life-time. Their optical properties may also show some defects, e.g. blinking effect or low light intensity. The difficulty in manufacturing blue emitting dots for QD-LED technology is another drawback.