Synthesis of Colloidal Quantum Dot Nanostructures for Photon Upconversion

Colloidal quantum dots (QDs) are promising materials for photon upconversion, the process by which multiple low-energy photons are absorbed and one higher-energy photon is emitted. Recent efforts have focused on developing complex multi-shell and nanorod-based heterostructures as efficient photon upconverters for solar energy harvesting applications. Here we present a CdTe/CdS/CdSe core/shell/shel...