Study of postgrowth processing in the fabrication of quantum-cascade lasers

The special postgrowth processing of structures for quantum-cascade lasers is studied. The processing includes regrowth with a high-resistivity material (indium phosphide) with a carrier concentration of n ≈ 5 × 10¹⁰ cm^?3, photolithography with various wet chemical etchants, and the fabrication of special contacts providing enhanced heat removal. The use of modified postgrowth processing provides necessary parameters satisfying requirements for high-quality devices.     

Use of Digital Technologies for Selecting the Hydrogen Storage and Transportation Type

Chemical and Petroleum Engineering - The fourth article in a series of five papers devoted to hydrogen energy digitalization. The article discusses the methods for ensuring digitalization in the...     

Prospects and Current Problems of Hydrogen Energy Digitalization

Chemical and Petroleum Engineering - The fifth article in a series of five papers devoted to hydrogen energy digitalization. The article discusses the prospects for the introduction of digital...     

Introduction to Digital Hydrogen Energy

Chemical and Petroleum Engineering - The first article in a series of five papers devoted to hydrogen energy digitalization. The article discusses the prospects of hydrogen energy use as an...     

Digitalization of Determining the Basic Properties of Hydrogen

Chemical and Petroleum Engineering - The second article in a series of five papers devoted to hydrogen energy digitalization. The article describes the process of digitalization of determining the...     

On the Fabrication and Study of Lattice-Matched Heterostructures for Quantum Cascade Lasers

Semiconductors - The fabrication and study of the characteristics of a lattice-matched quantum cascade laser structure on an indium-phosphide substrate, designed for a wavelength of ~4.8 μm...     

Digital Technologies in the Analysis of Cryogenic Systems for Producing Liquid Hydrogen

Chemical and Petroleum Engineering - The third article in a series of five papers devoted to hydrogen energy digitalization. The article discusses the process of interaction of various digital...