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Intense glare helps next-gen solar tech through awkward phase

Tough love: intense glare helps next-gen solar tech through awkward phase
Scanning confocal microscope image of a single mixed-halide perovskite crystal showing emission from mixed (green) and segregated (red) regions. The central region is exposed to intense light, which causes the halide-ions in this region to mix, generating green (540-570 nm) fluorescence. The red emission (>660 nm) is from phase-segregated perovskite driven by the low-intensity confocal microscope scanning laser. Credit: ARC Centre of Excellence in Exciton Science

Researchers in Australia have resolved a fundamental challenge preventing the wide uptake of next-generation perovskite solar cells.


Metal-halide perovskites, a class of hybrid organic-inorganic materials, provide a cheap, flexible and highly promising pathway for efficient solar photovoltaics, as well as light emissive devices and fast X-ray detectors.

However, since gaining prominence over the last decade, perovskite materials have presented scientists and engineers with several problems precluding their widespread use in commercial applications.

Among these is light-induced phase segregation, in which illumination, such as sunlight,

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Hendon Hooker helps No. 23 Virginia Tech beat Boston College

BLACKSBURG, Va. (AP) — Hendon Hooker ran for a career-high 164 yards and three touchdowns and threw for a score in No. 23 Virginia Tech’s 40-14 victory over Boston College on Saturday night.

Khalil Herbert added 143 yards rushing for the Hokies (3-1, 3-1 Atlantic Coast Conference). They ran for 350 yards in bouncing back from a road loss to North Carolina.

Virginia Tech scored off of four of BC’s five turnovers to pull away. The Eagles (3-2, 2-2) turned it over three times in the first half alone, with the most damaging coming when quarterback Phil Jurkovec overthrew an open Jaelen Gill deep in Virginia Tech territory. Devin Taylor intercepted the pass for the Hokies, and Hooker’s 29-yard touchdown pass to Herbert made it 17-7.

Boston College cut it to 17-14 on a touchdown pass from Jurkovec to Hunter Long with 7:11 left in the third quarter, but the

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New Rafael system helps vehicles navigate in GPS-denied environments

JERUSALEM — Rafael Advanced Defense Systems has created a system that combines vehicle-mounted cameras with 3D models and mapping algorithms to help manned and unmanned vehicles operate in GPS-denied environments.

Developed over the last several years, CT-MENTOR combines the Israeli company’s existing innovations for a vehicle suite as part of the Carmel program for an armored fighting vehicle of the future with its work on electro-optics for the Spike and Spice missiles.

Militaries are increasingly seeking ways to overcome adversarial jamming. The U.S. Army, for example, opened an office in September to study the challenge, but the service has been working on the issue for several years. The Defense Department further stressed this need for positioning, navigation and timing solutions in 2019. The year before, BAE Systems said it was developing ammunition that can operate in GPS-denied environments.

CT-MENTOR is based on a 3D model database that matches points with

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