Research of the semiconductor sensors based on anomal photovoltaic effect with highly sensitive parameters of the deformation

The paper presents a method for ensuring the temporal and temperature stability of the parameters of light-emitting diodes based on the semiconductor compound GaSb and its solid solutions GaInAsSb. The technology for manufacturing two-wavelength light-emitting diodes based on GaInAsSb (1.94 μm and 2.2 μm) has been improved, and their stability in the temperature range of -40 ºC to 80 ºC has been determined. A twostructure semiconductor optoelectronic device scheme has been developed to equalize the initial measuring and reference emission flows of the twocolor LED and ensure the temporal stability of the parameters. A technology has been developed to ensure the temporal stability and equality of the initial emission flows of two LED chips with emission peaks at different wavelengths of a two-color LED, which determine the accuracy of measurement for optoelectronic devices.

Technology of stabilizing parameters of twocolor light-emitting diodes

Kuldashov,

Ismoilov,

Komilov

et al. 2024

Programming and processing of big data using python language in medicine

Ergashev,

Mamadaliev,

Khonturaev

et al. 2024

Optoelectronic device for measuring the humidity of silkworth cocoons

Kuldashov,

Daliyev,

Komilov

et al. 2024

Purpose given work was creation of an optoelectronic device for measuring the humidity of silkworm cocoons on basis mid-IR LEDs. An optoelectronic device has been developed for measuring the humidity of silkworm cocoons based on mid-IR LEDs, allowing measurements in real mode with an accuracy of 1.5%. Analysis of the spectral characteristics of silkworm cocoons shows that in the optical range of 0.4…1.2 μ m, the cocoon shell transmits radiation well , and radiation with a wavelength of 1…2 μ m is well reflected. In the spectral region of 1.8-2.2 μ m, the reflectivity of silkworm cocoons is 85%, then drops to 14" at wavelengths of 3 μm. Transmission of radiation by the pupa in the spectral region of 0.4-10 μ m was not detected. The obtained data on the optical properties of silkworm cocoons made it possible to use the principle of reflection to control humidity, because at wavelengths of 1.95 and 2.22 μ m , where there are maxima and minima of water absorption, the shell of silkworm cocoons transmits little IR radiation, but at these wavelengths it has good reflectivity, so it is necessary to use the principle of reflection of IR radiation. In the optoelectronic device for measuring the humidity of silkworm cocoons, LEDs with emission spectra of 2.2 μ m are used as a reference channel , and LEDs with emission spectra of 1.94 μ m are used as a measuring channel . To record signals, a photodiode with a wide sensitivity range of 1.5 - 2.4 μ m was used. A schematic diagram has been proposed that ensures the main condition for two-wave optoelectronic devices, in terms of timing and temperature stability of LED parameters and the equality of their initial reference, measuring radiation fluxes, which determine the measurement accuracy.