68 citations · 68 across the 9 of their papers we have counts for
9 papers
Ultrafast cascade charge transfer in multi bandgap colloidal quantum dot solids enables threshold reduction for optical gain and stimulated emission
Nima Taghipour, Mariona Dalmases, Guy Luke Whitworth +2
Achieving low-threshold infrared stimulated emission in solution-processed quantum dots is critical to enable real-life application including photonic integrated circuits (PICs), L…
Colloidal quantum dot infrared lasers featuring sub-single-exciton threshold and very high gain
Nima Taghipour, Mariona Dalmases, Guy L. Whitworth +3
The use of colloidal quantum dots (CQDs) as a gain medium in infrared laser devices has been underpinned by the need for high pumping intensities, very short gain lifetimes and low…
Hybrid 2D-QD MoS2 PbSe Quantum Dot Broadband Photodetectors with High-Sensitivity and Room-Temperature Operation at 2.5 μm
Biswajit Kundu, Onur Özdemir, Mariona Dalmases +2
Broadband infrared photodetectors have profound importance in diverse applications including security, gas sensing, bioimaging, spectroscopy for food quality, and recycling, just t…
Low-threshold, highly stable colloidal quantum dot short-wave infrared laser enabled by suppression of trap-assisted Auger recombination
Nima Taghipour, Guy L. Whitworth, Andreas Othonos +5
Pb-chalcogenide colloidal quantum dots (CQDs) are attractive materials to be used as tuneable laser media across the infrared spectrum. However, excessive nonradiative Auger recomb…
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.
Single-Exciton Gain and Stimulated Emission Across the Infrared Optical 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 diagnostics1 and silicon photonics2,3 . The current technology is based…