Week in Review: 7/2/17 – 7/8/17

7/7/2017

Powerful new photodetector can enable optoelectronics advances

Now, in a nanoscale photodetector that combines both a unique fabrication method and light-trapping structures, a team of engineers from the University of Wisconsin-Madison and the University at Buffalo has overcome both of those obstacles. The researchers—electrical engineers Zhenqiang (Jack) Ma and Zongfu Yu at UW-Madison and Qiaoqiang Gan at the University of Buffalo—described their device, a single-crystalline germanium nanomembrane photodetector on a nanocavity substrate, in the July 7, 2017, issue of the journal Science Advances. https://www.engr.wisc.edu/powerful-new-photodetector-can-enable-optoelectronics-advances/

Meniscus-Assisted Technique Produces High Efficiency Perovskite PV Films

A new low-temperature solution printing technique allows fabrication of high-efficiency perovskite solar cells with large crystals intended to minimize current-robbing grain boundaries. The meniscus-assisted solution printing (MASP) technique boosts power conversion efficiencies to nearly 20 percent by controlling crystal size and orientation. http://www.news.gatech.edu/2017/07/07/meniscus-assisted-technique-produces-high-efficiency-perovskite-pv-films