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ELEKTRO 6/2020 was released on June 6th 2020. Its digital version will be available on June 24th 2020.

Topic: Electrical machines, drives and power electronics, electromobility

Main Article
New traction power supply technology 25 kV/50 Hz (part 1)

SVĚTLO (Light) 2/2020 was released on March 6th 2020. Its digital version will be available immediately.

Market, business, enterprise
BOOBA in new showroom, which surpassed all expectations
Discourse with Technology of Capital city Prague chairman of management

Day light
Diagram of overshadow for 21st march
Modern methods of gaining dates for processing lighting technology assessment

Researchers Develop Fastest and Most Flexible Silicon Phototransistor Ever

6. 11. 2015 | UW-Madison | news.wisc.edu

Inspired by mammals' eyes, University of Wisconsin-Madison electrical engineers have created the fastest, most responsive flexible silicon phototransistor ever made.

The innovative phototransistor could improve the performance of myriad products - ranging from digital cameras, night-vision goggles and smoke detectors to surveillance systems and satellites - that rely on electronic light sensors. Integrated into a digital camera lens, for example, it could reduce bulkiness and boost both the acquisition speed and quality of video or still photos.

The most flexible phototransistor

Developed by UW-Madison collaborators Zhenqiang Ma, professor of electrical and computer engineering, and research scientist Jung-Hun Seo, the high-performance phototransistor far and away exceeds all previous flexible phototransistor parameters, including sensitivity and response time.

One important aspect of the success of the new phototransistors is the researchers' innovative “flip-transfer” fabrication method, in which their final step is to invert the finished phototransistor onto a plastic substrate. At that point, a reflective metal layer is on the bottom. “In this structure - unlike other photodetectors - light absorption in an ultrathin silicon layer can be much more efficient because light is not blocked by any metal layers or other materials,” Ma says.

Read more at UW-Madison

Image Credit: UW-Madison

-jk-