4 papers
Highly Efficient, Bright and Stable Colloidal Quantum Dot Short-Wave Infrared Light Emitting Diodes
Santanu Pradhan, Mariona Dalmases, Ayse-Bilgehan Baspinar +1
Unbalanced charge injection is deleterious for the performance of colloidal quantum dot (CQD) light emitting diodes (LEDs) as it deteriorates the quantum efficiency (QE), brightnes…
Single-Exciton Gain and Stimulated Emission across the Infrared Telecom Band from Robust Heavily-doped PbS Colloidal Quantum Dots
Sotirios Christodoulou, Iñigo Ramiro, Andreas Othonos +6
Materials with optical gain in the infrared are of paramount importance for optical communications, medical diagnostics and silicon photonics. The current technology is based eithe…
Size and temperature dependent intraband optical studies of heavily n-doped PbS quantum dot solids
Iñigo Ramiro, Biswajit Kundu, Mariona Dalmases +3
Steady-state access to intraband transitions in colloidal quantum dots (CQDs), via heavy doping, allows exploiting the electromagnetic spectrum at energies below the band gap. CQD…
On the Origin of Below-Bandgap Turn-On Voltage in LEDs and High VOC in Solar Cells comprising Colloidal Quantum Dots with Engineered Density of States
Santanu Pradhan, Mariona Dalmases, Gerasimos Konstantatos
The turn-on voltage of an LED is an important parameter as it determined the power consumption of the LED and influences the effective power conversion efficiency.