(107a) Electronic Transport In Solid of Colloidal Quantum Dots

Colloidal quantum dots can be made of a wide variety of materials, covering the IR to the UV spectral range.  They can be processed as liquid solutions, dried, stamped, printed, on many different substrates.  One of our original contribution has been to achieve conductivity in solids of rather monodispersed colloidal quantum dots.  This was made possible by controlling the interaction between the dots and the Fermi level, leading to reversibly tuning the electronic transport properties over many orders of magnitude.  Our particular interests are to understand the basic mechanisms and transport regime associated with the nature of the materials. Starting with well monodispersed materials  allows to control accurately the carrier density by temperature/charging/doping, to monitor the effet on the occupation of the electronic levels, and the effect of that occupation on the radiative and nonradiative properties of the materials.  These studies provide the scientific basis for future optoelectronic application of solids of colloidal quantum dots.