Phosphor-free apple-white light emitting diodes have been fabricated using a dual stacked InGaN/GaN multiple quantum wells comprising of a lower set of long wavelength emitting indium-rich nanostructures incorporated in multiple quantum wells with an upper set of cyan-green emitting multiple quantum wells. The light-emitting diodes were grown on nano-epitaxially lateral overgrown GaN template f...

A theoretical study has been made to compare the quantum efficiencies of interwell and intrawell radiative transitions in quantum cascade lasers based on AlxGa1 xAs/GaAs technology. Radiative and non-radiative intersubband transition rates were calculated for a range of temperatures between 4 K and 300 K at an applied electric field of 4 kVcm 1 for structures designed to emit in both mid-infrar...

Articles you may be interested in Effect of V-defects on the performance deterioration of InGaN/GaN multiple-quantum-well light-emitting diodes with varying barrier layer thickness Three dimensional numerical study on the efficiency of a core-shell InGaN/GaN multiple quantum well nanowire light-emitting diodes Effect of an electron blocking layer on the piezoelectric field in InGaN/GaN multiple...

Quantum well solar cells are heterostructure devices promising significant efficiency enhancements over conventional cells. An existing model for quantum well solar cell current-voltage characteristics has been refined. This refined model, unlike its predecessor, is in good agreement with previous experimental results for AlGaAs/GaAs. The model predicts some efficiency enhancements for quantum ...

Repeated quantum game theory addresses long term relations among players who choose strategies. In the conventional theory, single round games or at most finitely repeated have been widely studied, however less is known for infinitely games. Investigating crucial since do not much differ from this work we establish concept of general and show Quantum Folk Theorem, which claims that by iterating...

The stochastic efficiency [G. Verley et al., Nat. Commun. 5, 4721 (2014)] was introduced to evaluate the performance of energy-conversion machines in micro-scale. However, such an generally diverges when no heat is absorbed while work produced a thermodynamic cycle. As result, any statistical moments do not exist. In this study, we come up with different version definition for which always fini...