05/04/2019

Engineering

Mystery of negative capacitance in perovskite solar cells solved

On the verge of outcompeting current thin-film solar cells, perovskite solar cells seem to embody an ideal solar cell with high efficiency and low cost. However, they have poor long-term stability, which remains a challenge. ...

Telecom

World's first 5G phone released in South Korea

Telecom giant Samsung Electronics on Friday released the Galaxy S10 5G, the world's first available smartphone with built-in fifth-generation communications, as South Korea seeks to build a lead in the transformative technology.