Energy-Saving Technique for Faster Communication Systems

Researchers have developed a technique that will allow for faster communication systems and better energy-saving electronics.

Nanotransistors Stay Cool at High Voltages

The transistors enable power converters to perform at substantially improved efficiencies, especially in high-power applications.

Overcoming Pitfalls When Measuring Thin, Parallel Optics

A "TPSI" process makes it possible to distinguish between the front and back of optical surfaces, and to characterize the quality of both in a single measurement.

Double-Sided Si(Ge)/Sapphire/III-Nitride Hybrid Structures

NASA Langley Research Center has developed a double-sided Si(Ge)/ Sapphire/III-Nitride hybrid structure. This technology uses both sides of a sapphire wafer to build device...

Graphene-Silicon Devices for Optoelectronics Applications

Silicon is a naturally occurring material commonly used as a semiconductor in electronic devices; however, researchers have exhausted the potential of devices with semiconductors made...

Auxiliary Power Solutions for 1500 VDC Photovoltaic Systems

Photovoltaic systems are continually evolving to improve their efficiency and financial viability. One trend is to move to larger strings of cells giving higher dc voltages to be...

Nuclear Radiation-Detecting Device

A material was developed for nuclear radiation detection that could provide a significantly less expensive alternative to the detectors now in commercial use. Specifically, the high-performance material is...

Fabrication Process Produces Nanostructures for Electronic Devices

Demands for improved computer processing power have led researchers to explore both new processes and other materials beyond silicon to produce electronic components....

Ultra-Wide-Bandgap Power Electronics

Power electronics used for routing, control, and conversion of electrical power traditionally utilize silicon semiconductors. These systems tend to be bulky, require active cooling, and are inadequate for...

Silicon Carbide High-Voltage Switch

High-voltage wide bandgap (WBG) semiconductor devices like 15-kV silicon carbide (SiC) MOSFETs have attracted attention because of potential applications in high-voltage and high-frequency power...

Brookhaven National Laboratory

Opened in 1947 on the former site of the U.S. military's Camp Upton in New York, Brookhaven National Lab's (BNL) initial mission centered on the peaceful exploration of the atom. Particle accelerators, leading...

Reliability Testing of High-Power Devices

Before a new high-power semiconductor device can be used for industrial applications, it must be thoroughly tested to determine if it will survive environmental stresses and continue to meet...

Addendum of Self-Aligned Ion Implant to Design and Processing of SiC High-Temperature Transistors for Durable Operation Above 400 °C

Researchers at NASA’s Glenn Research Center have developed a revolutionary new generation of silicon...

Dual-Leadframe Transient Liquid Phase Bonded Power Semiconductor Module Assembly and Bonding Process

A high-temperature-capable widebandgap semiconductor power module package, coupled with a new high-temperature- capable bonding process...

Precision Electronics and Laser Optics Expand Thermal Applications

Thermal imagers allow a user to see an object’s heat signature, and heat provides an entirely different set of performance data than the visible spectrum available to the...

Using CVD Diamond to Cool Hot Devices

Increasing power densities and decreasing transistor dimensions are hallmarks of many of today’s semiconductor devices, including high-voltage power transistors, laser diodes, and RF power amplifiers....

Using Source Measure Units to Characterize High Power Semiconductors (Part 2)

Part 1 of this article, which appeared in the August 2013 issue of NASA Tech Briefs, dealt with ON-state characterization of high power semiconductors (link to...

Using Source Measure Units to Characterize High-Power Semiconductors (Part 1)

The proliferation of electronic control and electronic power conversion into a variety of industries (e.g., energy generation, industrial motor drives and control,...

Efficient Thermal Simulation for Advanced LED Designs

A successful LED system design must be able to transfer the active device’s heat efficiently from its own PN junction to the ambient. This path includes the printed circuit board on...

Controlling the Composition and Structure of Nanowires for LED Applications

Nanowires — microscopic fibers that can be “grown” in a lab — have a variety of potential applications, including LEDs and sensors. A team of MIT researchers...

Bringing the Heat

LED, semiconductor, and package designers use complex thermal analysis software to analyze their products, but the analysis is only as good as the data provided. Reliable clarification of heat data upstream and downstream...

Pulsed Laser System to Simulate Effects of Cosmic Rays in Semiconductor Devices

Spaceflight system electronic devices must survive a wide range of radiation environments with various particle types including energetic protons, electrons,...