Silicon Betavoltaic Batteries Structures

For low-power miniature energy creation sources the particular interest is nickel Ni63. This paper discusses the main types of betavoltaic battery structures with the prospects for industrial application using - isotope of nickel Ni63. It is shown that the prospects for improving the effective efficiency are planar multijunction betavoltaic batteries

Heterostructure Active Area Optimization by Simulation

Changing LED performance characteristics, depending on Indium atoms concentration and at different temperatures were simulated. It was suggested that a LED having p-n junction area S0 can be considered as a sum of “SmallLEDs (SLEDs)” electrically connected in parallel, each SLED has its own In-content and its own p-n junction area S(X). Good correlation in simulation and experimental results has been obtained. It was determined that the best structure for AlGaInN NH is p+GaN / p+Al0.2Ga0.8N / 4(n-InxGa1 – xN-n- GaN) / n+GaN. The main thing is that in the NH AA there are 4QW-in two central ones there is maximum radiation and two ones at the both ends of active region are “barriers” which help to concentrate electrons / holes in active region and additionally “protect” QW from different defects

Heterostructure Active Area Optimization by Simulation

Changing LED performance characteristics, depending on Indium atoms concentration and at different temperatures were simulated. It was suggested that a LED having p-n junction area S0 can be considered as a sum of “SmallLEDs (SLEDs)” electrically connected in parallel, each SLED has its own In-content and its own p-n junction area S(X). Good correlation in simulation and experimental results has been obtained. It was determined that the best structure for AlGaInN NH is p+GaN / p+Al0.2Ga0.8N / 4(n-InxGa1 – xN-n- GaN) / n+GaN. The main thing is that in the NH AA there are 4QW-in two central ones there is maximum radiation and two ones at the both ends of active region are “barriers” which help to concentrate electrons / holes in active region and additionally “protect” QW from different defects

The Current-voltage Characteristics Simulation of the Betavoltaic Power Supply

In order to optimize betavoltaic power supply it was calculated the current-voltage characteristics when changing the depth of the upper p-layer and at changing doping levels structure areas. It is shown that an increase in the depth reduces the short-circuit current and thus reduces the open circuit voltage. It has been observed that the concentration of the lightly doped region more significantly influence on the current-voltage characteristics than the depth of the p-n-junction. The concentration of the n-region, equal to 1014 cm – 3, can be considered as during betavoltaic power supply design. It is shown that, by increasing the power supply activity the conversion efficiency of the structure increases, too

The Spectral Sensitivity Characteristics Simulation of the Silicon p-i-n-structure with High Resistance

In the paper a simulation program for photovoltaic parameters of semiconductor devices and results of their investigation are presented. The results of the program usage based on an example of calculating the influence of the high-resistance "well" thickness in the silicon p-i-n-diode spectral response are discussed. For the accuracy of the program estimation it was compared the theoretical spectral characteristics of a silicon PIN-diode 5 kOhm substrate with the experimental data

The Spectral Sensitivity Characteristics Simulation of the Silicon p-i-n-structure with High Resistance

In the paper a simulation program for photovoltaic parameters of semiconductor devices and results of their investigation are presented. The results of the program usage based on an example of calculating the influence of the high-resistance "well" thickness in the silicon p-i-n-diode spectral response are discussed. For the accuracy of the program estimation it was compared the theoretical spectral characteristics of a silicon PIN-diode 5 kOhm substrate with the experimental data