Engineering Optical Activity of Semiconductor Nanocrystals via Ion Doping

Electronic Impurity Doping of Colloidal Semiconductor Nanocrystals

Doping is extremely important for controlling the electronic conductivity of bulk semiconductors. However, very few examples exist where impurities that have been incorporated into colloidal semiconductor nanocrystals affect their electronic properties. Here we will discuss the challenges in this area as well as recent progress. In particular, we will describe an approach to lightly dope semico...

Doping Semiconductor Nanocrystals: Theory and Experiment

Doping—the intentional introduction of impurities into a material—is fundamental to controlling the properties of bulk semiconductors. The prospect of new technologies has motivated similar efforts to dope semiconductor nanocrystals since their discovery two decades ago. Despite some successes [1–5], many of these efforts have failed, for reasons that remain mysterious. For example, individual ...

Theoretical Investigation of Doping Concentration in Silicon Semiconductor Using Optical Principle

This paper investigates the amount of doping concentration in silicon semiconductor using optical principle.  Both donor and acceptor impurities of n type and p-type silicon semiconductor materials are computed at wavelength of 1550 nm. During the computation of donor and acceptor impurities, both reflection and absorption losses are considered. Theoretical result showed that transmitted intens...

Atomic-scale Modeling of Transition-metal Doping of Semiconductor Nanocrystals

Engineering of Semiconductor Nanocrystals for Light Emitting Applications

Semiconductor nanocrystals are rapidly spreading into the display and lighting markets. Compared with liquid crystal and organic LED displays, nanocrystalline quantum dots (QDs) provide highly saturated colors, wide color gamut, resolution, rapid response time, optical efficiency, durability and low cost. This remarkable progress has been made possible by the rapid advances in the synthesis of ...